API Development Jobs in the South East

51 to 75 of 169 API Development Jobs in the South East

Python Backend Engineer

London, South East, England, United Kingdom
Hybrid / WFH Options
Computer Futures
Python/FastAPI Backend Engineer Opportunity! Location: Fully Remote Department: Software Development Salary: Up to £80,000 + Bens Are you ready to make a significant impact in the world of clinical research? This business is on the lookout for a talented Python/FastAPI Backend Engineer to join their innovative team. This is your chance to contribute to … within a dynamic cross-functional team comprising Frontend Developers, QA Engineers, and DevOps Engineers. Your mission? To design, implement, and maintain robust microservices that facilitate clinical research. Key Responsibilities: API Development: Design and implement REST APIs using Python (3.x) and FastAPI/Pydantic. Database Management: Develop relational schema designs, ORM, and database migration scripts (PostgreSQL). Dependency Management … We're Looking For: Technical Expertise: Extensive experience in designing and implementing REST APIs using Python (3.x) and FastAPI (Pydantic schema). Testing Proficiency: Skilled in writing unit and API tests. API Integration: Experience in developing clients for consuming external REST APIs. Security Knowledge: Understanding of API and data security standards. Cloud Savvy: Working knowledge of cloud More ❯
Employment Type: Full-Time
Salary: £60,000 - £80,000 per annum
Posted:

Full Stack Developer

Andover, England, United Kingdom
twentysix
new functionality and frameworks Collaborating with Business Analysts, Project Leads and IT team to resolve issues and ensuring solutions are viable and consistent Work with outside data sources and API ‘s Troubleshooting technical issues and bug fixing Improving application performance, ensure the performance, quality, and responsiveness of applications Conducting regular reviews of systems and generating reports on efficiencies and … training sessions and workshops on system processes Requirements and Qualifications: BS/MS degree in Computer Science, Engineering or a related subject 1-3 years’ experience in web application development Experience with two or more programming language including but not limited to PHP, Asp.net, C++, C# , etc. Familiar with API design and development (e.g RESTful ) is a … plus Familiarity with rational database – MySql, MsSql Experience with third-party libraries and web application development platform is a plus Experience working with remote data via REST and JSON Experience in full development cycle of Web applications Familiar with Web Security ( Attacks and Protection ) is a plus Familiar with jQuery libraries and front-end (CSS) frameworks like Bootstrap More ❯
Posted:

Sr. Python Developer

Slough, England, United Kingdom
JR United Kingdom
Social network you want to login/join with: We are seeking a highly skilled and versatile Senior Developer to join our team and contribute to the development and maintenance of our cutting-edge Azure Databricks platform for economic data. This platform is critical for our Monetary Analysis, Forecasting, and Modelling activities. The Senior Developer will be responsible for … both front-end and back-end development, with a focus on Python, including the challenging but rewarding task of reverse engineering an existing codebase to integrate new features and improvements. This role requires a strong understanding of software development principles, experience with various programming languages and frameworks, and a passion for building high-quality, scalable, and maintainable software. … Key Responsibilities: Full-Stack Development: Contribute to both front-end and back-end development of applications and APIs interacting with the Azure Databricks platform. Develop user interfaces using modern front-end frameworks (e.g., React, Angular, Vue.js) and ensure a seamless user experience. Develop robust and efficient back-end services and APIs using Python. Python Development: Develop and More ❯
Posted:

Product Engineer

west london, south east england, United Kingdom
Hybrid / WFH Options
ByteHire
focused approach. Overview: Were hiring on behalf of our client for a Product Engineer (backend C# .net core) to join their growing team. The role will focus on backend development for a platform that blends telephony, voice AI, and LLMs to create next-generation voice automation features. Youll play a key role in building core product functionality, from low … the future). Write performant SQL for PostgreSQL databases; help design schemas and queries. Build and manage WebSocket connections for real-time features. Build clean automation tests (unit, functional, API). Build minimal UI components using Blazor SSR (checkboxes, graphs ..etc). Assist with deployment using Docker (containerisation) and AWS (EC2, RDS). Integrate with telephony and AI services … experience with C# (.NET Core) in Linux-based production environments. Comfortable navigating ambiguity and working with minimal supervision. Strong SQL knowledge, with experience using PostgreSQL in live systems. REST API development experience; understanding of JWT and cookie-based auth. Familiarity with Docker and AWS services, from a developer perspective. Comfortable with WebSockets. Comfortable with building lightweight frontends in More ❯
Posted:

Lead Developer (OOP) - £82000 - ID40090

Southampton, England, United Kingdom
Humand Talent
autonomy and clean architecture are valued. The role combines hands-on technical contribution with the opportunity to shape processes and practices. You will: Work on a Greenfield project Lead development efforts using C#, Ruby on Rails and PHP (Symfony), with a strong focus on object-oriented programming Guide backend infrastructure work using AWS, Terraform and Helm Mentor three direct … reports and foster technical growth across your team Contribute to API development, architectural discussions and containerisation efforts (Kubernetes) Collaborate with Product Managers and other Tech Leads to align engineering efforts with business goals About you You are likely an experienced backend developer with a history of working across multiple technologies and leading high-performing teams. You will bring … Proven experience in object-oriented development, ideally with Ruby, C# or PHP (or other OO languages such as Java) A strong understanding of cloud infrastructure, especially within AWS environments Familiarity with infrastructure as code tools such as Terraform or Helm Confidence in mentoring and developing others, with a people-first approach to leadership A keen eye for clean code More ❯
Posted:

Lead Developer (OOP) - £82000 - ID40090

Wokingham, England, United Kingdom
Humand Talent
autonomy and clean architecture are valued. The role combines hands-on technical contribution with the opportunity to shape processes and practices. You will: Work on a Greenfield project Lead development efforts using C#, Ruby on Rails and PHP (Symfony), with a strong focus on object-oriented programming Guide backend infrastructure work using AWS, Terraform and Helm Mentor three direct … reports and foster technical growth across your team Contribute to API development, architectural discussions and containerisation efforts (Kubernetes) Collaborate with Product Managers and other Tech Leads to align engineering efforts with business goals About you You are likely an experienced backend developer with a history of working across multiple technologies and leading high-performing teams. You will bring … Proven experience in object-oriented development, ideally with Ruby, C# or PHP (or other OO languages such as Java) A strong understanding of cloud infrastructure, especially within AWS environments Familiarity with infrastructure as code tools such as Terraform or Helm Confidence in mentoring and developing others, with a people-first approach to leadership A keen eye for clean code More ❯
Posted:

DevOps Architect

Oxford, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
automation capabilities that reduce overheads across delivery, product and operations teams Develop robust integrations, custom APIs, and maintain business-critical automated processes Provide strategic guidance, frameworks, and standards for development and automation solutions Stay abreast of emerging technologies and tools, introducing innovations that enhance operational performance Collaborate with stakeholders across all levels, translating technical concepts into business-friendly language … control and CI/CD tools (Git, Azure DevOps, GitHub/GitLab) Skilled in multiple programming languages, ideally including: .Net (C#) PowerShell T-SQL Deep understanding of the software development lifecycle and Agile methodologies Proven experience in DevOps/SRE practices, CI/CD pipelines and Infrastructure as Code (Terraform, Bicep, ARM) Solid understanding of API development More ❯
Posted:

Data Analyst

London, South East, England, United Kingdom
Morgan McKinley
with Microsoft Power Platform (PowerBI, Power Automate, Microsoft Copilot). Proficiency in SQL, Python, and advanced data querying techniques. Experience in data modelling and data warehouse concepts. Familiarity with API data integration methods. Excellent analytical and problem-solving skills. Outstanding communication skills, with the ability to clearly explain technical concepts to non-technical stakeholders. Bonus Points For: Experience with … Microsoft Fabric or Azure Synapse Analytics. Strong DAX skills in PowerBI. Knowledge of accounting or financial services data structures. Experience with API development and integration. Familiarity with natural language processing techniques. Understanding of data governance principles. Experience with Agile project methodologies. More ❯
Employment Type: Full-Time
Salary: £35,000 - £40,000 per annum, Inc benefits
Posted:

Technical Development Manager

Maidenhead, Berkshire, United Kingdom
Spectrum IT Recruitment
a pivotal role offering the chance to influence product direction, lead technical delivery, and support the growth of a high-performing global team. About the Role: As a Technical Development Manager, you will be responsible for the full life cycle of product development - from idea through to release and ongoing support. You'll lead a team of up … product delivery Oversee planning and execution of deliverables, ensuring timelines, scope, and quality standards are met Track and report engineering metrics, ensuring continuous improvement Drive hiring, coaching, and career development of team members Collaborate with Product Management on feasibility and estimation Champion DevOps and CI/CD best practices and drive automation Participate in design and implementation of cloud … grade, scalable services Required Experience : Experience with mentoring/leading a small team Strong hands on experience with coding and developing in C#/.net/SQL Proficiency in API design and development Solid background in source code management Desirable Skills: Experience managing capitalised software and team operational health (CapEx/Opex) Familiarity with AWS cloud services and More ❯
Employment Type: Permanent
Salary: £85000/annum Medical Insurance + Bonus
Posted:

Technical Development Manager

West Berkshire, England, United Kingdom
Spectrum IT Recruitment
a pivotal role offering the chance to influence product direction, lead technical delivery, and support the growth of a high-performing global team. About the Role: As a Technical Development Manager, you will be responsible for the full life cycle of product development - from idea through to release and ongoing support. You'll lead a team of up … product delivery Oversee planning and execution of deliverables, ensuring timelines, scope, and quality standards are met Track and report engineering metrics, ensuring continuous improvement Drive hiring, coaching, and career development of team members Collaborate with Product Management on feasibility and estimation Champion DevOps and CI/CD best practices and drive automation Participate in design and implementation of cloud … grade, scalable services Required Experience : Experience with mentoring/leading a small team Strong hands on experience with coding and developing in C#/.net/SQL Proficiency in API design and development Solid background in source code management Desirable Skills: Experience managing capitalised software and team operational health (CapEx/Opex) Familiarity with AWS cloud services and More ❯
Posted:

Software architect

Guildford, England, United Kingdom
Hybrid / WFH Options
Search 5.0
world’s most impressive payments businesses that work within a dynamic remote-first model. Our client’s aim is to hire a Software Architect to lead the design and development of scalable, high-performance software solutions. This role involves collaborating with cross-functional teams to ensure architectural integrity and alignment with business objectives. The successful candidate will work in … a multi-disciplinary team keeping close relationships with the product and development teams as well as external stakeholders. The Role Design and implement robust, scalable, and secure software architectures for our payment processing systems. Collaborate with product managers, developers, and stakeholders to translate business requirements into technical solutions. Evaluate and recommend technologies, tools, and frameworks to enhance our technology … stack. Lead architectural reviews and ensure adherence to best practices and coding standards. Mentor and guide development teams, fostering a culture of continuous improvement. Address performance and scalability challenges, implementing solutions to optimize system efficiency. Maintain comprehensive architectural documentation to support development and operational activities. What would make you a good fit? Bachelor’s or Master’s degree More ❯
Posted:

Software architect

Portsmouth, England, United Kingdom
Hybrid / WFH Options
Search 5.0
world’s most impressive payments businesses that work within a dynamic remote-first model. Our client’s aim is to hire a Software Architect to lead the design and development of scalable, high-performance software solutions. This role involves collaborating with cross-functional teams to ensure architectural integrity and alignment with business objectives. The successful candidate will work in … a multi-disciplinary team keeping close relationships with the product and development teams as well as external stakeholders. The Role Design and implement robust, scalable, and secure software architectures for our payment processing systems. Collaborate with product managers, developers, and stakeholders to translate business requirements into technical solutions. Evaluate and recommend technologies, tools, and frameworks to enhance our technology … stack. Lead architectural reviews and ensure adherence to best practices and coding standards. Mentor and guide development teams, fostering a culture of continuous improvement. Address performance and scalability challenges, implementing solutions to optimize system efficiency. Maintain comprehensive architectural documentation to support development and operational activities. What would make you a good fit? Bachelor’s or Master’s degree More ❯
Posted:

Senior Mulesoft Developer (SC Cleared)

Hampshire, United Kingdom
Hybrid / WFH Options
ARM
is to develop clean code, adhering to SOLID principles that is well tested, performant and maintainable. Responsibilities: Managing the exchange of data between different backend services (owned by separate development teams) and front-end application and third party API integration Development of all server-side logic, working with BA and Quality Assurance to ensure business logic is … service optimisation Documenting solutions through flowcharts, diagrams, code comments, clear code and via Confluence/knowledge base articles Ensuring compliance with quality guidelines (Unit Tests, Code Quality, Test Driven Development) Addressing non-functional requirements and operational/support-relevant topics during conception and implementation (e.g. logging, capacity/performance management, monitoring and distributed tracing/debugging) End-to-end … thinking during development - supporting and improving releases from test to integration and production environments Presentation and demonstration of concepts and services via show-and-tell demos, tech-talks and taking part in direct user feedback and evaluation sessions Following agile software development lifecycles, but maintaining foresight to reduce tech debt where possible and not at the cost of More ❯
Employment Type: Contract
Rate: £585/day Inside IR35
Posted:

Senior C# .NET Developer

PO6 3EN, Hilsea, Hampshire, United Kingdom
Morris Sinclair Recruitment
Scrum ) and thrive in a fast-paced, dynamic setting. They should have a keen interest in emerging technologies , staying ahead of industry trends, and be committed to continuous skill development . A professional and approachable demeanor is key, as is the ability to champion the adoption of innovative technologies within the team. Experience Good knowledge of Microsoft development technologies Visual Studio 2022 onwards Strong C#/.NET experience Net/.Net Core Web API development experience API documentation generation tools Experience using IoC containers SQL Server experience Experience using Entity Framework OOAD skills and good understanding of Design Patterns and Practices Web services (SOAP and/or WCF) Unit testing/Test Driven Development Distributed WinForms systems development Desirable Familiarity with DevOps tools for managing work items and source control, with TFS experience being a plus. Alternatively, experience working in a source-controlled, continuous integration (CI) environment. Background in the finance or pensions sector, with an understanding of industry-specific requirements and practices. Proficient in SQL Server query optimisation, including performance tuning More ❯
Employment Type: Permanent
Posted:

Senior C# .NET Developer

Portsmouth, Hampshire, England, United Kingdom
Hybrid / WFH Options
MORRIS SINCLAIR RECRUITMENT LTD
Scrum ) and thrive in a fast-paced, dynamic setting. They should have a keen interest in emerging technologies , staying ahead of industry trends, and be committed to continuous skill development . A professional and approachable demeanor is key, as is the ability to champion the adoption of innovative technologies within the team. Experience Good knowledge of Microsoft development technologies Visual Studio 2022 onwards Strong C#/.NET experience Net/.Net Core Web API development experience API documentation generation tools Experience using IoC containers SQL Server experience Experience using Entity Framework OOAD skills and good understanding of Design Patterns and Practices Web services (SOAP and/or WCF) Unit testing/Test Driven Development Distributed WinForms systems development Desirable Familiarity with DevOps tools for managing work items and source control, with TFS experience being a plus. Alternatively, experience working in a source-controlled, continuous integration (CI) environment. Background in the finance or pensions sector, with an understanding of industry-specific requirements and practices. Proficient in SQL Server query optimisation, including performance tuning More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

System Analyst

Brighton, England, United Kingdom
JR United Kingdom
Social network you want to login/join with: We are seeking a seasoned Technical Analyst with a strong background in application development , system analysis , and digital transformation to join our team. The ideal candidate will serve as a key bridge between business stakeholders and development teams , helping to modernize and optimize BAU processes currently running on legacy … systems. This role requires hands-on technical expertise in API development , React , and strong proficiency in SQL (preferably including Oracle SQL). Key Responsibilities: Collaborate with business stakeholders to understand and document current BAU (Business-as-Usual) processes . Analyze and propose improvements to existing BAU workflows to drive efficiency and performance. Support and influence the digital transformation … deep understanding of application architecture and integration points. Work closely with third-party vendors to manage dependencies, issues, and timelines. Translate business requirements into technical solutions and collaborate with development teams to ensure successful delivery. Provide technical guidance during the design and development of applications. Develop and maintain RESTful APIs and contribute to front-end development using More ❯
Posted:

System Analyst

Crawley, England, United Kingdom
JR United Kingdom
Social network you want to login/join with: We are seeking a seasoned Technical Analyst with a strong background in application development , system analysis , and digital transformation to join our team. The ideal candidate will serve as a key bridge between business stakeholders and development teams , helping to modernize and optimize BAU processes currently running on legacy … systems. This role requires hands-on technical expertise in API development , React , and strong proficiency in SQL (preferably including Oracle SQL). Key Responsibilities: Collaborate with business stakeholders to understand and document current BAU (Business-as-Usual) processes . Analyze and propose improvements to existing BAU workflows to drive efficiency and performance. Support and influence the digital transformation … deep understanding of application architecture and integration points. Work closely with third-party vendors to manage dependencies, issues, and timelines. Translate business requirements into technical solutions and collaborate with development teams to ensure successful delivery. Provide technical guidance during the design and development of applications. Develop and maintain RESTful APIs and contribute to front-end development using More ❯
Posted:

System Analyst

Reading, England, United Kingdom
JR United Kingdom
Social network you want to login/join with: We are seeking a seasoned Technical Analyst with a strong background in application development , system analysis , and digital transformation to join our team. The ideal candidate will serve as a key bridge between business stakeholders and development teams , helping to modernize and optimize BAU processes currently running on legacy … systems. This role requires hands-on technical expertise in API development , React , and strong proficiency in SQL (preferably including Oracle SQL). Key Responsibilities: Collaborate with business stakeholders to understand and document current BAU (Business-as-Usual) processes . Analyze and propose improvements to existing BAU workflows to drive efficiency and performance. Support and influence the digital transformation … deep understanding of application architecture and integration points. Work closely with third-party vendors to manage dependencies, issues, and timelines. Translate business requirements into technical solutions and collaborate with development teams to ensure successful delivery. Provide technical guidance during the design and development of applications. Develop and maintain RESTful APIs and contribute to front-end development using More ❯
Posted:

System Analyst

Guildford, England, United Kingdom
JR United Kingdom
Social network you want to login/join with: We are seeking a seasoned Technical Analyst with a strong background in application development , system analysis , and digital transformation to join our team. The ideal candidate will serve as a key bridge between business stakeholders and development teams , helping to modernize and optimize BAU processes currently running on legacy … systems. This role requires hands-on technical expertise in API development , React , and strong proficiency in SQL (preferably including Oracle SQL). Key Responsibilities: Collaborate with business stakeholders to understand and document current BAU (Business-as-Usual) processes . Analyze and propose improvements to existing BAU workflows to drive efficiency and performance. Support and influence the digital transformation … deep understanding of application architecture and integration points. Work closely with third-party vendors to manage dependencies, issues, and timelines. Translate business requirements into technical solutions and collaborate with development teams to ensure successful delivery. Provide technical guidance during the design and development of applications. Develop and maintain RESTful APIs and contribute to front-end development using More ❯
Posted:

Full Stack Developer - PHP - HealhTech

Reading, England, United Kingdom
Abm Renovation
develop end-to-end software across backend and frontend systems Build scalable, cross-platform applications integrating with cloud services Ensure compliance with medical software and data standards Lead software development initiatives and act autonomously Essential Experience 5 years in a full-stack or similar software role Strong experience across PHP ideally a framework (Symfony, Laravel) Experience with the Cloud … AWS Ideally) Familiarity with secure, standards-compliant software development Version control (Git), database experience (SQL, MongoDB), and API development Desirable Skills Exposure to Containerisation and deployment Experience in regulated environments Understanding of mobile development If this looks like a bit of you please do not hesitate to apply now! David Crowley - Consulting across Tech in Healthcare … SDLC, AI/ML) Seniority level Seniority level Mid-Senior level Employment type Employment type Full-time Job function Job function Engineering and Information Technology Industries Software Development Referrals increase your chances of interviewing at INOVERSE GROUPE by 2x Graduate Software Engineer (Cloud Solutions) Reading, England, United Kingdom 4 months ago Feltham, England, United Kingdom 1 week ago Newbury More ❯
Posted:

Application Integration Specialist

Southampton, England, United Kingdom
Hybrid / WFH Options
gen2fund.com
equivalent higher education) in Information Technology, Data Engineering, or a related field; Proven experience working with enterprise accounting software and/or private equity/investment management software integrations. API Integration experience with MuleSoft and/or API Development experience. Experience in system configuration, customization, and integration of financial applications. Investran or similar platform certifications beneficial. Good … working knowledge of Accounting Platform database structures and data models. Proficiency in SQL and data query languages to extract and manipulate data. Experience beneficial in Object Oriented language development, including integrations with SOAP and REST based APIs. Familiarity with reporting and analytics tools, Qlik, Microsoft Excel, Power BI, Synapse, Snowflake or similar. Self-motivated, proactive, with a strong sense More ❯
Posted:

Staff Backend Engineer

Brighton, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
into engineering leadership or continue developing your technical expertise with a focus on architecture, the role offers a clear path in both directions. Key Responsibilities: Lead the design and development of scalable, high-performance backend systems. Establish and enforce best practices for backend development and system architecture. Provide solutions to complex technical challenges and continuously improve the product … background in multithreaded backend languages (Kotlin, Java, Go, Rust, etc.). Experience working in the HealthTech space Strong experience with PostgreSQL or similar relational databases. Proficient in system design, API development, and microservices architecture. Hands-on experience with cloud platforms (AWS, GCP), containerisation (Docker), and orchestration (Kubernetes). Experience in start-up environments is a plus, as the More ❯
Posted:

Software Architect

High Wycombe, England, United Kingdom
JR United Kingdom
Java, Power Platform) Proficiency in CI/CD tools (Azure DevOps, GitHub, GitLab, etc.) Hands-on with Infrastructure as Code (Terraform, Bicep, ARM) Understanding of DevOps/SRE principles, API development, and SDLC best practices #J-18808-Ljbffr More ❯
Posted:

Software Architect

Southampton, England, United Kingdom
JR United Kingdom
Java, Power Platform) Proficiency in CI/CD tools (Azure DevOps, GitHub, GitLab, etc.) Hands-on with Infrastructure as Code (Terraform, Bicep, ARM) Understanding of DevOps/SRE principles, API development, and SDLC best practices #J-18808-Ljbffr More ❯
Posted:

Java Developer

Leatherhead, Surrey, UK
CGI
Category: Software Development/Engineering Do you have the right skills and experience for this role Read on to find out, and make your application. Main location: United Kingdom, England - South East, Leatherhead Position ID: J0125-2301 Employment Type: Full Time CGI UK Careers – Your mission found here By playing this video you consent to Google/YouTube processing … adapting to rapidly changing requirements. • Work in an environment that values pragmatic, delivery-focused problem solving and continuous learning. Required qualifications to be successful in this role: • Java Microservices Development: Proven experience in building and testing Java microservices. • RESTful API Development: Recent hands-on experience with developing APIs using OpenAPI and JSON. • Teamwork & Communication: Strong team working More ❯
Posted:
API Development
the South East
10th Percentile
£26,750
25th Percentile
£45,000
Median
£50,000
75th Percentile
£56,675
90th Percentile
£75,000