101 to 121 of 121 API Development Jobs

AI Engineer

Hiring Organisation
Oscar Technology
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £100,000 per annum
agents, automate complex workflows, and extract value from structured and unstructured data at scale. This role sits at the intersection of AI engineering, software development, and applied machine learning , working closely with product, platform, and data teams. Key Responsibilities Design, build, and deploy agentic AI systems and intelligent workflows … architecture decisions, performance optimisation, and AI system monitoring Required Skills & Experience Bachelor's degree or higher in a relevant STEM discipline. Strong Python development skills for AI/ML and backend services Hands-on experience with agentic AI architectures and autonomous workflows Practical experience with AI orchestration frameworks (e.g. ...

Systems Project Manager

Hiring Organisation
MCR Property Group
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£35,000 - £45,000 per annum
delivery of a new property management system, replacing the existing platform and reshaping how the business operates across its residential, commercial and development portfolios. From initial planning through to go-live and beyond, you’ll own the implementation journey — ensuring the system is configured correctly, integrated seamlessly, adopted confidently … ensuring accuracy, integrity and business confidence in the new platform. Integration will sit at the core of your remit. You’ll coordinate and oversee API development connecting the new system with HubSpot, finance and banking platforms, tenant portals and BI tools, managing external developers where bespoke solutions ...

Technical Architect

Hiring Organisation
Triad
Location
Nationwide, United Kingdom
Employment Type
Permanent
Salary
£70000 - £80000/annum
Architect to take a leading role in designing robust, scalable, and innovative technology solutions for our clients. You will work closely with stakeholders and development teams to ensure the alignment of technology with business goals, while championing best practices in architectural design and delivery. Key Responsibilities: Collaborate with development … lead and influence technical discussions. Proven experience as a Technical Architect or similar role. In-depth knowledge of system design, software architecture, and development methodologies. Experience with cloud platforms (e.g., AWS, Azure, Google Cloud). Expertise in architectural design, data pipelines, cloud platforms, and API development. Knowledge ...

Data Operations Engineer

Hiring Organisation
Radley James
Location
London, UK
data pipelines to feed real time trading and research systems. Implement data quality checks, anomaly detection and monitoring frameworks. Build and maintain high performance API's to expose market and reference data to trading, research and analytics platforms. Who you are: 3+ years in Data Engineering … performance, time sensitive environments. Strong Python proficiency, including exposure to libraries such as Pandas, Arrow, and Spark. Strong grasp of data modelling, normalization and API development for large scale analytical or trading systems. Experience with lakehouse architectures (Databricks ideally, or Delta Lake). Exposure to real time ...

Data Operations Engineer

Hiring Organisation
Radley James
Location
United Kingdom
data pipelines to feed real time trading and research systems. Implement data quality checks, anomaly detection and monitoring frameworks. Build and maintain high performance API's to expose market and reference data to trading, research and analytics platforms. Who you are: 3+ years in Data Engineering … performance, time sensitive environments. Strong Python proficiency, including exposure to libraries such as Pandas, Arrow, and Spark. Strong grasp of data modelling, normalization and API development for large scale analytical or trading systems. Experience with lakehouse architectures (Databricks ideally, or Delta Lake). Exposure to real time ...

Full Stack Developer

Hiring Organisation
Horwich Farrelly
Location
Salford, Greater Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
Collaborate with stakeholders and product owners to understand requirements and deliver solutions. Participate in code reviews, testing, and continuous improvement initiatives. Contribute to the development of our AI-driven product suite, including ELI. Occasionally engage with clients or internal teams to understand needs and provide technical guidance. What were … looking for: Essential Skills: Strong experience in C# for backend/API development. Proficiency in JavaScript/TypeScript , with exposure to frameworks such as Angular (front-end) and Node.js (backend). Ability to adapt quickly and learn new technologies as needed. Solid understanding of software development principles ...

Web Developer

Hiring Organisation
Shaw Daniels Solutions
Location
United Kingdom
code effectively. Serve as an escalation point for web platform issues, coordinating with IT, business teams, and third-party support. Stay current with web development trends, best practices, and optimization techniques. Undertake other duties relevant to the role as required. Demonstrate professionalism in all interactions with internal teams … deliver user-focused digital experiences. Communicate effectively at both technical and non-technical levels. Essential Knowledge, Skills & Experience Strong proficiency in modern web development: JavaScript/TypeScript, C#, responsive design, and mobile-first development. Experience with full-stack frameworks (Next.js, Remix, Astro) and developing REST/GraphQL APIs. Knowledge ...

Net/Azure Architect

Hiring Organisation
WeDoTech
Location
Remote work, Farringdon, Greater London, United Kingdom
Employment Type
Permanent
Salary
£85000 - £90000/annum
C#/.Net Expert Azure - Platform and Software Architecture Design Patterns - HLD and LLD Messaging/Queueing - Service Bus Data Ingestion - NoSQL/Postgres API Design and Development - RESTFul Cloud agnostic mindset a nice to have - AWS/GCP. Medium Term Aspirations:- Two routes are on offer ...

Senior Front End Developer - Vue/.NET - Law Firm

Hiring Organisation
Lorien
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
planning, and other agile ceremonies. Education, Skills & Experience: Strong experience as a full stack developer but with a deep understanding of modern Front End development best practices and an expert in Vue Extensive experience with JavaScript, TypeScript, and modern Front End frameworks Proficiency with CSS preprocessors, HTML5, and CSS3. … Familiarity with RESTful APIs, source control (git), and Agile methodologies. Desirable: Experience with .NET/.NET Core, Dapper, Entity Framework, MS SQL Server, and API development. Strong experience working with NPM/Yarn, bundlers (Webpack/Vite), and build tools Why Join? Be part of a diverse and inclusive ...

Full-Stack Developer (Laravel, Vue.js)

Hiring Organisation
Deerfoot Recruitment Solutions
Location
Stroud, Gloucestershire, South West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
Laravel/PHP APIs, Vue.js (or similar) front-end, Node.js/LoopBack, MySQL/MongoDB, Git, Docker, AWS/DigitalOcean (or similar), Linux environments. API design/integration skills, authentication/security best practices including SSO, CMS/content migrations. Proactive mindset: problem-solver, quick learner, clear communicator …/skills, this role could be a great fit: Full-Stack Developer, PHP/Laravel Developer, Vue.js Developer, Full-Stack PHP Developer, Node.js Developer, API Developer, Software Engineer (integrations), Web Application Developer (e-commerce/CRM), DevOps Engineer (Docker/AWS), Backend Developer (MySQL/MongoDB). Deerfoot Recruitment ...

Go Developer API - Technologist

Hiring Organisation
Client Server
Location
Cambridge, Cambridgeshire, UK
Developer/Backend Software Engineer (Golang API) Cambridge/WFH to £80k Are you a backend focussed technologist looking for an opportunity to progress your career whilst working on complex and interesting systems with continual learning opportunities? You could be joining a market leading software house that's remote … home most of the time, meeting up with colleagues in the Cambridge office once a month. About You: You have commercial Go/Golang development experience, ideally with a Java background You have experience with API design and development You're happy to collaborate in an Agile ...

Go Developer API - Technologist

Hiring Organisation
Client Server
Location
United Kingdom
Developer/Backend Software Engineer (Golang API) Cambridge/WFH to £80k Are you a backend focussed technologist looking for an opportunity to progress your career whilst working on complex and interesting systems with continual learning opportunities? You could be joining a market leading software house that's remote … home most of the time, meeting up with colleagues in the Cambridge office once a month. About You: You have commercial Go/Golang development experience, ideally with a Java background You have experience with API design and development You're happy to collaborate in an Agile ...

Backend Software Engineer

Hiring Organisation
Reed
Location
Southend-on-Sea, Essex, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £50,000 per annum, Inc benefits
background in the Microsoft technology stack, specializing in building robust, scalable, and maintainable server-side applications. The successful candidate will report to the IT & Development Manager and work closely with the Projects Team to support the delivery of new opportunities and ongoing business changes across multiple functions and departments. … CRUD interactions. Develop and optimize SQL tables, indexes, views, stored procedures, and user-defined functions focusing on performance and scalability. Design and implement RESTful API endpoints, integrate external services, and ensure API reliability and security. Utilize tools such as Visual Studio Diagnostics, SQL Profiler, and performance logs ...

Back End Developer

Hiring Organisation
Apex Systems
Location
London, UK
week Hybrid/Remote : Hybrid – 3 days per week Duration: 1 year + option to extend Job Description: Top Must-Haves: Python Postgres SQL API Developent (REST) Good CS and OOP fundamentals. Experience with SDLC and design of new greenfield solutions Responsibilities: • Design sophisticated backend components, services, platforms … knowledge of PostgreSQL. • Strong Software Engineering Design capabilities and understanding of Computational Complexity. • Skillful in software engineering practices & best practices for the full software development life cycle, including coding standards, code reviews, source control management, continuous deployments, testing, and operations. Thanks. ...

Back End Developer

Hiring Organisation
Apex Systems
Location
United Kingdom
week Hybrid/Remote : Hybrid – 3 days per week Duration: 1 year + option to extend Job Description: Top Must-Haves: Python Postgres SQL API Developent (REST) Good CS and OOP fundamentals. Experience with SDLC and design of new greenfield solutions Responsibilities: • Design sophisticated backend components, services, platforms … knowledge of PostgreSQL. • Strong Software Engineering Design capabilities and understanding of Computational Complexity. • Skillful in software engineering practices & best practices for the full software development life cycle, including coding standards, code reviews, source control management, continuous deployments, testing, and operations. Thanks. ...

PHP Developer

Hiring Organisation
Nigel Wright Group
Location
Hebburn, Tyne and Wear, England, United Kingdom
Employment Type
Full-Time
Salary
£28,000 - £35,000 per annum
working with an established and growing technology company based in Gateshead, and we’re looking for a PHP Developer to join their development team. This is a fantastic opportunity for someone who enjoys a mix of modern development work and meaningful improvement of legacy systems. The role … features, including implementing a full search capability to enhance efficiency and data accessibility. Modernising legacy workflows by replacing old PHP-based email processes with API-driven systems, working closely with C# to enhance and develop backend endpoints. Tackling technical debt by resolving long-standing issues in legacy codebases ...

Salesforce & React Native Developers - London

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Temporary
Salary
£450 - £550 per day
Salesforce & React Native Developers - London Atrium EMEA are looking for several Salesforce & React Native Developers to support the Development teams onsite with a client in London. 12+mths contract, 2 days onsite/3 days remote, PAYE/Umbrella options. Salesforce & ReactNative - Salesforce and .or ReactNative (Web), Java, TDD, RESTful … API design & build, OAS/YAML, Unit Testing, GitLab, CI/CD Pipelines, SonarQube, Veracode, Jira, Confluence Open Stack BA - Salesforce, ReactNative (Web), Java, TDD, RESTful API design & build, OAS/YAML, Unit Testing, GitLab, CI/CD Pipelines, Jira, Confluence API Developer - Java, TDD, RESTful API ...

Full Stack PHP Developer

Hiring Organisation
Red Recruitment 24/7 Ltd
Location
Lincoln, Lincolnshire, East Midlands, United Kingdom
Employment Type
Permanent
Salary
£45,000
/PHP developer to join a team working in Lincoln and we are looking for someone who can demonstrate at least three years commercial development experience. The successful candidate's salary will be dependent on experience and the candidate will be working to help develop and support the companys …/Laravel/Livewire Experience of building complex web applications using (Livewire) Excellent command of written and spoken English Proven track record of design, development, and testing, of fast, scalable, and architecturally robust solutions Experience with MySql and relational databases and design Experience with SCSS for styling applications ...

Open Stack, Salesforce & React Native Specialists - London Atrium EME

Hiring Organisation
Atrium Global
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £550 per day
Open Stack, Salesforce & React Native Specialists - London Atrium EMEA are looking for several Open Stack/Salesforce & React Native Specialists to support the Development teams onsite with a client in London. 12+mths contract, 2 days onsite/3 days remote, PAYE/Umbrella options. Open Stack/Salesforce & ReactNative … Salesforce, ReactNative (Web), Java, TDD, RESTful API design & build, OAS/YAML, Unit Testing, GitLab, CI/CD Pipelines, SonarQube, Veracode, Jira, Confluence Open Stack BA - Salesforce, ReactNative (Web), Java, TDD, RESTful API design & build, OAS/YAML, Unit Testing, GitLab, CI/CD Pipelines, Jira, Confluence API ...

CTO

Hiring Organisation
Leo Technology
Location
Petersfield, Hampshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Seed to Series A) Hands-on expertise with OpenAI integrations or other LLM-based solutions Technical experience with Node.js, Python, and SQL Experience with API design and development for both internal and external use cases Knowledge of ISO/compliance Experience designing and scaling data pipelines and working ...

API Developer - Standard & Control

Hiring Organisation
Vallum Associates
Location
South Yorkshire, Sheffield, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550/day
Role: API Developer Location: Sheffield, UK Position Type: Contract Inside IR35 Implementation Partner – HSBC Remote work option Available: Hybrid – 2 Days Onsite Job Description: YOUR RESPONSIBILITIES To be a pro-active, collaborative and inquisitive member of the DevX Standards and Controls leadership team. This role supports the head … enhance the standards in collaboration with various stakeholders. Lead/facilitate product planning and prioritisation to deliver towards a future vision for where API standards go and how the tooling aligns to this. Align and communicate roadmaps for the product to the customers Run customer forums for API ...