API Development Jobs in the South East

26 to 50 of 65 API Development Jobs in the South East

Software Engineer - Energy Trading

london, south east england, united kingdom
Hybrid / WFH Options
MFK Recruitment
who thrives in a fast-paced, build-first culture without multiple tiers of management. You should be excited to take full ownership of backend development, lead on best practices, and coach others in a collaborative, delivery-focused team. Experience in retail or wholesale electricity and gas markets is helpful … technical solutions. Support analysts and data scientists in deploying and operationalising analytics tools and models. Lead or support the data engineering team, help structure development workflows, and mentor junior team members. Software Engineer - (Not all) Skills Required: Python (FastAPI, Flask) REST API development RabbitMQ/Message queue More ❯
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New Stack Developer

Horsham, Sussex, United Kingdom
Setsquare Recruitment
in transforming innovative ideas into Minimum Viable Products (MVPs) that leverage Azure's technology stack. We are seeking someone with experience in web application development, user interface design, automated testing, and building secure APIs. Database Skills General understanding of databases Working knowledge of Postgres Working knowledge of querying languages … like SQL Front End Skills such as: React Streamlit Java Script Cloud development Azure Functions Security best practices for cloud applications, including identity and access management (IAM), encryption, and secure coding Proficiency with code version controlling and remote repositories Git Repo branching strategies Programming Language and backend technology PYTHON … Node JS (optional) Fast or FLASK API development framework Docker AI and data science related technologies Python AI and Analytics tools and libraries Large Language model APIs Vector databases CI/CD Familiarity with CI/CD pipelines, infrastructure as code (IaC) using tools like Terraform, and monitoring More ❯
Employment Type: Contract
Rate: GBP 475 - 500 Daily
Posted:

New Stack Developer

Horsham, West Sussex, United Kingdom
Setsquare Recruitment
in transforming innovative ideas into Minimum Viable Products (MVPs) that leverage Azure's technology stack. We are seeking someone with experience in web application development, user interface design, automated testing, and building secure APIs. Database Skills · General understanding of databases · Working knowledge of Postgres · Working knowledge of querying languages … like SQL Front End Skills such as: · React · Streamlit · Java Script Cloud development · Azure Functions · Security best practices for cloud applications, including identity and access management (IAM), encryption, and secure coding Proficiency with code version controlling and remote repositories · Git · Repo branching strategies Programming Language and backend technology PYTHON … Node JS (optional) Fast or FLASK API development framework Docker AI and data science related technologies Python AI and Analytics tools and libraries Large Language model APIs Vector databases CI/CD · Familiarity with CI/CD pipelines, infrastructure as code (IaC) using tools like Terraform, and monitoring More ❯
Employment Type: Contract
Rate: £475 - £500/day
Posted:

Microsoft Dynamics 365 (Finance & Operations) Integration Developer / Support

leatherhead, south east england, united kingdom
KBR
connect Dynamics 365 Finance and Operations with other systems such as ProjOps, Dataverse, Data Lake, Synapse, Enterprise Data Warehouse (EDW), or third-party applications. Development: Writing code and developing custom solutions using relevant programming languages and technologies (such as X++, C#, SQL, XML, JSON) to create seamless data flow … and functionality between different systems. API Development: Utilizing APIs (Application Programming Interfaces) provided by Dynamics 365 Finance and Operations and other systems to facilitate data exchange and communication between them. Data Mapping and Transformation: Defining data mapping rules and implementing data transformation processes to ensure data consistency and … solutions and processes. Skills and Competencies A relevant number of years' of experience developing integrations for Microsoft Dynamics 365 Finance & Operations Skills of X++ development, including solutions. T-SQL development skills Cloud Integration specialisms familiar with the range of Azure integration technologies Functions Logic App Azure Data Lake More ❯
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Full Stack Developer

london, south east england, united kingdom
Hybrid / WFH Options
GAIL's
delivering high-quality baked goods to our customers. We are looking for a talented DevOps Lead Developer to join our team and drive the development and management of our enterprise-grade applications across our bakeries. Responsibilities: Work with the team on development and management of applications focused on … Analytics, Engineering, or a related field. Minimum of 3+ years of experience in coding with Python and React.js. Knowledge of databases (SQL & NoSQL) and API development/integration. Familiarity with enterprise architecture design and delivery (Azure, GitHub, etc). Proven experience in building cloud applications using Microsoft Azure More ❯
Posted:

Application Integration Specialist

Southampton, Hampshire, United Kingdom
Hybrid / WFH Options
Gen II Fund Services
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 … 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 More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Full Stack Engineer (Python/React)

london, south east england, united kingdom
The Highfield Partnership
Compose should be familiar allies). Database dialogues (SQL and PostgreSQL are our go-to, but we know other databases are available). RESTful API development and management – making systems talk nicely to each other. Proactive Performance Tuning – because nobody likes a sluggish system. A solid grasp of … . A dynamic and forward-thinking work environment where your ideas are actually listened to (we promise!). We're all about growth and development – we want you to level up your skills alongside us. (Insert typical UK benefits here - e.g., generous holiday allowance, pension scheme, flexible working options More ❯
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Lead AI Engineer - AI Innovation Team - GenAI Developer - Azure

london, south east england, united kingdom
Hybrid / WFH Options
Aventis Solutions
Collaborate with data scientists, software engineers, and product managers to align AI solutions with commercial goals. Financial services experience is desired but not essential. API development (FastAPI, Flask) Tech stack : Azure, Python, Databricks, Azure DevOps, ChatGPT, Groq, Cursor AI, JavaScript, SQL, Apache Spark, Kafka, Airflow, Azure ML, Docker More ❯
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Full Stack Engineer

london, south east england, United Kingdom
Adalta
The first Engineer they’re looking for is a more mature Web Developer that has at least 2 years of commercial Full Stack Web Development experience. The second Engineer is a more DevOps-focused Full Stack Engineer that has been working with DevOps tooling, pipelines, and CI/CD. … Key Skills At least 3 years’ experience of coding in a Python web-development framework, preferably Django. At least 2 years’ experience of coding in a front-end capacity (preferably React), ideally 3 years if possible, especially for the Web Developer Container-related tools – e.g., Docker, Docker Compose AWS … RESTful API development and management. Databases – e.g., SQL, PostgreSQL. If you’re interested in the above, please apply for the position or contact me directly at anthony.dale@adalta-solutions.com More ❯
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Senior MLops (Full Stack) Engineer | London | Foundation Models

london, south east england, united kingdom
SoCode Recruitment
/CD pipelines and drive infrastructure automation What you’ll bring 5+ years’ experience in backend or infrastructure-focused engineering roles Strong Python and API development skills (FastAPI, Flask, etc.) Proven experience with model deployment, containerization, and orchestration (K8s, Docker) Infrastructure-as-code experience (Terraform, Helm, etc.) Familiarity More ❯
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Backend Engineer - Up to £70k

london, south east england, United Kingdom
Few&Far
Staff Engineer and CTO, being instrumental in designing & implementing backend services, ensuring high performance, scalability, and reliability You will work on projects ranging from API development, integrations, to new feature development, providing a rich experience for customers You will follow best practices in testing, documentation & maintainability, ensuring More ❯
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Technical Lead - Backend/OO/Cloud - £85000 - ID40090

Newbury, Berkshire, UK
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: Lead development efforts using 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 or PHP (or other OO languages such as Java or C#) A strong understanding of cloud infrastructure, especially within AWS environments Familiarity with infrastructure as code More ❯
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Technical Lead - Backend/OO/Cloud - £85000 - ID40090

newbury, south east 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: Lead development efforts using 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 or PHP (or other OO languages such as Java or C#) A strong understanding of cloud infrastructure, especially within AWS environments Familiarity with infrastructure as code More ❯
Posted:

PHP Developer

Newport Pagnell, Buckinghamshire, South East, United Kingdom
Hybrid / WFH Options
Marshall Resource Partners Ltd
with other internal and external systems. This role offers an excellent opportunity for a PHP Developer looking to gain hands-on experience in application development while also working on a business-critical Case Management System. Background to role We are a leading vehicle company who has recently been acquired … business at an exciting time, as we look to rebuild systems and support a huge growth in fleet size. As part of our IT development strategy, we are seeking a PHP Developer with a few years of experience to help maintain and develop PHP-based applications, as well as … experience in PHP development. Experience with databases such as PostgreSQL. Experience in developing PHP applications running on either Apache or Nginx. Familiarity with RESTful API development and integration. Understanding of authentication systems like OAuth 2.0. Experience with source control systems such as Git. Knowledge of front-end technologies More ❯
Employment Type: Permanent, Work From Home
Salary: £40,000
Posted:

Guidewire Technical Engineer / Developer

london, south east england, united kingdom
Hybrid / WFH Options
US3 Consulting
with a major insurance organisation seeking a Guidewire Technical Engineer/Developer to join a growing digital delivery team. This role focuses on the development and integration of Guidewire applications—particularly leveraging InsuranceConnect —to enhance the connectivity and automation of insurance business workflows. You will be hands-on in … delivering scalable, high-performance integrations, working with stakeholders across architecture, development, and business teams to drive critical initiatives forward. Key Responsibilities: Design, build, and maintain integration solutions using Guidewire InsuranceConnect and related technologies. Develop high-quality, efficient, and reusable code in Gosu, Java , and via REST/SOAP APIs … 4+ years’ experience as a Guidewire Developer/Integration Engineer . Strong expertise with InsuranceConnect and Guidewire platform integrations. Proficiency in Gosu , Java , and API development (REST & SOAP). In-depth understanding of ClaimCenter, PolicyCenter, BillingCenter , and Digital Portals integration models. Comfortable working in complex, enterprise-scale environments. More ❯
Posted:

Python Developer

london, south east england, united kingdom
Tenth Revolution Group
driving engineering best practices. Key Responsibilities: Develop and maintain internal tools that enhance business processes and drive operational efficiency. Lead end-to-end feature development , from solution design and implementation to deployment, testing, and monitoring. Ensure continuous improvements by updating and refining existing tools based on feedback, API … building applications in either GCP or AWS. Familiarity with CI/CD pipelines and deployment tools (e.g., GitHub Actions, Docker). Solid understanding of API development using frameworks such as Django, FastAPI, or Flask. What’s in It for You? Flexible working options (hybrid model with 2 days … in-office). Health & wellbeing benefits, including private medical and life insurance . Learning & development programs with access to top-tier training resources . Regular team socials and off-site events . A collaborative culture where your work makes a real impact . Send your CV to P.bower@tenthrevolution.com More ❯
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Back-end Engineer - Team Decide

Oxford, Oxfordshire, United Kingdom
Taktile GmbH
passion for simplicity and precision. Required Experience Prior industry experience with Python. Experience with databases and AWS or similar cloud providers. Proficient in RESTful API development and management. Ideal, But Not Required DynamoDB/Postgres/Pydantic/AWS Lambda/SQLAlchemy. Experience with frontend development (e.g. … of leading tech investors and advisors around the globe. Receive a top-of-market equity and cash compensation package. Get access to a self-development budget you can use to e.g. attend conferences, buy books or take classes. Receive a new Apple MacBook Pro, as well as meaningful home More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Full Stack Engineer

Hook, south east england, united kingdom
Hybrid / WFH Options
Experis Scotland
library, deliver high-quality UIs, and work on mission-critical services with real impact. 💡 Technologies : ✅ React (hooks, functional components) ✅ Java (Spring Boot/MVC, API development) ✅ JavaScript, CSS, SQL ✅ Git, Maven, Eclipse/VS Code ✅ Styled-Components & React Hook Form (nice to have) 🔒 Must be UK-based More ❯
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Back-end Engineer - Team Resolve

Oxford, Oxfordshire, United Kingdom
Taktile GmbH
with a passion for simplicity and precision. Ideal, But Not Required DynamoDB/Postgres/Pydantic/AWS Lambda/SQLAlchemy. Experience with frontend development (e.g., React or similar frameworks). Required Experience Prior industry experience with Python backend. At least one prior work experience is required - this is … not an entry-level position. Experience with databases and AWS or similar cloud providers. Proficient in RESTful API development and management. Our Offer Work with colleagues that lift you up, challenge you, celebrate you and help you grow. We come from many different backgrounds, but what we have … of leading tech investors and advisors around the globe. Receive a top-of-market equity and cash compensation package. Get access to a self-development budget you can use to e.g. attend conferences, buy books or take classes. Receive a new Apple MacBook Pro, as well as meaningful home More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead Software Engineer

london, south east england, united kingdom
McCabe & Barton
Firm client for a Lead Full Stack Microsoft Developer to join their team! If you have experience building modern, scalable applications and leading talented development teams within a professional services environment, this could be your next move. Expectations of the role: Power Platform Development: Design and deploy custom … using Power Apps, Power Automate, and Power BI. Azure Functions: Build and manage serverless solutions for business logic, data processing, and APIs. Front-End Development: Create responsive, user-friendly interfaces with React, Angular, and Fluent UI. .NET Core Back-End: Develop APIs and back-end services using C# and … with front-end frameworks: React, Angular, or Vue.js . Solid understanding of SQL Server and Azure Cosmos DB . Knowledge of RESTful and OData API development. Leadership experience: mentoring, code reviews, and team collaboration. Familiarity with CI/CD pipelines and application packaging/deployment (Docker, Azure DevOps). More ❯
Posted:

Microsoft Business Central Developer Contract

Braintree, Essex, South East, United Kingdom
Hybrid / WFH Options
167 Solutions Ltd
in D365 Business Central . Proven track record in on-premise to cloud migrations . Proficiency in AL, C/AL, C/SIDE development , and Business Central extensions. Experience in third-party integrations and API development . Knowledge of B2B business models, service management, and field More ❯
Employment Type: Contract, Work From Home
Rate: From £300 to £500 per day
Posted:

Java Developer

Godalming, Surrey, United Kingdom
Hybrid / WFH Options
慨正橡扯
alignment with business objectives while maintaining high coding and security standards. As part of an agile team, you will contribute to the full software development lifecycle from requirement analysis to deployment and support. Key Responsibilities: Design, develop, and maintain scalable Java applications using Java 17+ and Spring Boot. Develop … and integrate RESTful APIs and microservices, ensuring alignment with cloud-native architectures. Collaborate with Agile teams and contribute to the full software development lifecycle using a User Centred Design approach. Conduct unit and integration testing using frameworks such as JUnit and Mockito to ensure high code quality. Implement DevOps …/or NoSQL databases (e.g., PostgreSQL, MongoDB). Communicate effectively across multidisciplinary teams, both verbally and in writing. Skills and Experience: Proficient in Java development (Java 17+). Strong hands-on experience with Spring Boot, Hibernate, and REST API development. Familiarity with microservices architecture and major cloud platforms More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Machine Learning Engineer in Milton Keynes - WorkBuzz

Milton Keynes, Buckinghamshire, United Kingdom
WorksHub
Experience and Skills Experience in API development and integrating ML models with backend systems. Deep understanding of CI/CD pipelines for ML, including tools like GitLab CI/CD, MLflow, Docker, and ECS. Exposure to ECS, Kubernetes, Terraform, and Infrastructure as Code (IaC). Strong knowledge of … cloud security and Identity and Access Management (IAM). Knowledge of vector databases and retrieval-augmented generation (RAG). Data pipeline development experience using Airflow, Spark, or similar tools. Experience with AWS Lambda and DynamoDB Streams. Why you'll love working at WorkBuzz - Our culture is fast-paced and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead PHP Developer

london, south east england, united kingdom
Hybrid / WFH Options
Oliver Bernard
week. The Role Leading a squad of 7 backend developers Remaining hands on whilst leading and mentoring developers Drive the team to ensure exceptional development standards and practices Design and implement the technical road map Requirements Extensive experience with PHP Experience of leading teams and mentoring developers Strong knowledge … of Laravel/Symfony Knowledge of Golang Strong API development experience CI/CD, GCP/AWS and Kubernetes experience is a bonus As a Lead PHP developer, this is a unique opportunity to join a market leading company with the added bonus of continuing to grow your More ❯
Posted:

Senior Engineering Manager - Wellbeing

london, south east england, United Kingdom
Reward Gateway
a global wellbeing platform meeting the needs of both users and merchants. You will oversee delivery across both web and mobile apps with an API-first cloud-based approach, applying your knowledge to simplify and refine operational processes. Some of Your Responsibilities & Core Duties will be to: Lead initiatives … personalised mobile-first wellness experiences. Contribute to the definition and delivery of Engineering roadmaps, anticipating technical challenges and managing interdependencies. Oversee the entire software development lifecycle, from conception to deployment and maintenance, ensuring high-quality outcomes across all phases. Implement best practices in coding, testing, and maintenance to enhance … a user-centric fitness and wellness area. Understanding of machine learning techniques in the context of fitness and wellness technology. Strong technical expertise in API development, coupled with a deep understanding of software architecture and design patterns. Expertise in cloud technologies, particularly AWS, with the ability to deploy More ❯
Posted:
API Development
the South East
10th Percentile
£26,750
25th Percentile
£45,000
Median
£50,000
75th Percentile
£57,500
90th Percentile
£89,500