76 to 100 of 136 API Development Jobs

Senior Full-Stack Engineer (Node.JS/React/Next.JS)

Hiring Organisation
Ithika Recruitment Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£85,000 - £90,000 per annum
Improved performance and reliability of key product areas Helped shape engineering practices around code quality, testing, and maintainability Tech Stack: TypeScript/JavaScript Node.js (API development) React, Next.js AWS Serverless (Lambda, API Gateway) Vercel SQL Server Algolia CI/CD (TeamCity) You Might Be a Good ...

Software Engineer

Hiring Organisation
Sanderson Recruitment
Location
Bristol, Avon, South West, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £675 per day + Inside IR-35
contribute effectively to a collaborative team environment for a client working in the UK Secure Government sector. Key technical skills: Agile methodologies Python and API development CI/CD with Jenkins ReactJS, Git, SQL Docker and Neo4j Strong database design ability You'll be a supportive team player … with good communication skills, comfortable working across the full development lifecycle and contributing to a fast moving engineering setup. Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people ...

Engineering Manager - Software & ML

Hiring Organisation
Capital One UK
Location
Westminster, Greater London, UK
London, London Engineering Manager – Software & ML About this role We are looking for a Software Engineering Manager who brings a solid foundation in modern development and some experience with Machine Learning environments. You’ll lead and grow a team that builds the core software powering our data-driven financial … Collaborate with Product Managers and Data Scientists to ensure ML models are effectively integrated into our production software. Build Robust Systems: Oversee the development of platforms that are performant, secure, and capable of handling the unique deployment needs of AI-powered features. Optimize Delivery: Enhance engineering and agile processes ...

Engineering Manager - Software & ML

Hiring Organisation
Capital One UK
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
London, London Engineering Manager - Software & ML About this role We are looking for a Software Engineering Manager who brings a solid foundation in modern development and some experience with Machine Learning environments . You'll lead and grow a team that builds the core software powering our data-driven … Collaborate with Product Managers and Data Scientists to ensure ML models are effectively integrated into our production software. Build Robust Systems: Oversee the development of platforms that are performant, secure, and capable of handling the unique deployment needs of AI-powered features. Optimize Delivery: Enhance engineering and agile processes ...

Agentic AI Engineer – Microsoft Ecosystem

Hiring Organisation
Avanade
Location
England, United Kingdom
seeking a highly skilled and innovative Agentic AI Engineer to join our team and drive the development and deployment of cutting-edge generative AI solutions within the Microsoft ecosystem . This position is well-suited for candidates with a background in software engineering, data science, or machine learning … applications utilizing Microsoft platforms such as M365, Copilot Studio, and Azure AI Foundry, and have at least one year of relevant experience. Strong software development background with proficiency in Python. Experience with API development using FastAPI, Flask, or Django. Knowledge of Docker and containerized deployments. Hands ...

Mainframe Developer with CICS Webservices

Hiring Organisation
Infoplus Technologies UK Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £400 to £450 per day
skills/knowledge/experience: (As applicable) Required skills: Experience working in ZOS connect EE and DB2 Rest and extensive knowledge in CICS webservices Development experience using FileAid, Xpeditor, IBM explorer for ZOS, Visual studio. Proficient with SOAP, WSDL and JSON. A comprehensive understanding of SOA and Restful APIs … Java including OOP, functional programming (java 8+) Familiarity with Spring Boot's annotations, configuration, and how it simplifies Spring application setup and deployment. Restful API development experience Or/and Hands-on experience using DataPower appliances Development experience using XSLT, Gateway Script and XPath ...

Senior AI Engineer (Platform)

Hiring Organisation
Harnham
Location
New Malden, England, United Kingdom
Software Engineering with strong applied AI experience Deep expertise in GCP (Vertex AI, BigQuery, Cloud Run/Functions, ADK, Model Garden) Strong Python and API development experience Hands‐on with LLMs, embeddings, RAG, vector databases Proven track record building production‐ready AI systems with observability and testing Solid ...

Data Engineer

Hiring Organisation
Agilis Recruitment Ltd
Location
Nationwide, United Kingdom
Employment Type
Permanent
developing, and maintaining data infrastructure to ensure the seamless inflow, data sanitation/consolidation and automated report production for clients. Key Responsibilities: Design and Development: Design, develop, and maintain scalable ETL pipelines to process and integrate data from various sources. Implement data validation routines to ensure data quality … understand data requirements. Database Management: Design and maintain relational database schemas to support business needs. Ensure efficient storage, retrieval, and management of large datasets. API Management: Develop and maintain APIs for data access and integration. Utilize tools like Postman for API testing and documentation. A good understanding ...

HRIS System Integration Engineer

Hiring Organisation
Morson Edge
Location
Hemel Hempstead, Hertfordshire, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £600/day None
IR35 Day rate: Up to £600 per day Duration: Initial 3 months but will most likely extend Start date: ASAP Key words: ElementSuite, Integration, API, Dataflows We are looking for a HRIS system Integration Engineer to connect our Clients core HRIS (ElementSuite) with their AI recruitment tool (Talent.AI … data flow, writing the middleware or scripts to sync these systems, and ensuring that data remains secure and accurate across all platforms. Core Responsibilities - API Development & Mapping: Use REST APIs to create seamless data synchronisation between ElementSuite, Aslan, and Talent.AI. - Workflow Automation: Automate the _Hire-to-Onboard_ journey ...

HRIS System Integration Engineer

Hiring Organisation
Morson Edge
Location
Buckinghamshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
£550 - 600 per day + None
IR35 Day rate: Up to £600 per day Duration: Initial 3 months but will most likely extend Start date: ASAP Key words: ElementSuite, Integration, API, Dataflows We are looking for a HRIS system Integration Engineer to connect our Clients core HRIS (ElementSuite) with their AI recruitment tool (Talent.AI … data flow, writing the middleware or scripts to sync these systems, and ensuring that data remains secure and accurate across all platforms. Core Responsibilities - API Development & Mapping: Use REST APIs to create seamless data synchronisation between ElementSuite, Aslan, and Talent.AI. - Workflow Automation: Automate the _Hire-to-Onboard_ journey ...

Senior AI Engineer

Hiring Organisation
Harnham
Location
City of London, London, United Kingdom
engineering with clear documentation and stakeholder collaboration. Your Skills and Experience To be successful, you will bring: • Strong Python skills for backend services, SDKs, API development, authentication and testing. • Hands‐on experience working with LLMs, embeddings, prompt engineering, tool calling and RAG design. • Practical knowledge of GCP services ...

Senior AI Engineer

Hiring Organisation
Harnham
Location
Sheffield, England, United Kingdom
engineering with clear documentation and stakeholder collaboration. Your Skills and Experience To be successful, you will bring: • Strong Python skills for backend services, SDKs, API development, authentication and testing. • Hands‐on experience working with LLMs, embeddings, prompt engineering, tool calling and RAG design. • Practical knowledge of GCP services ...

Senior Data Scientist - 12 Month FTC

Hiring Organisation
Vitality Corporate Services Limited
Location
Central London, London, United Kingdom
Employment Type
Permanent
Salary
£95,000
leverage external tools Familiarity with agentic SDKs (ADK, LangChain, LlamaIndex, etc.) Proven track record of deploying AI applications into production environments Strong understanding of API development, microservices, and containerization (Docker, Kubernetes) Knowledge of MLOps best practices Excellent problem-solving skills and ability to work in a fast-paced ...

Senior Data Scientist - 12 Month FTC

Hiring Organisation
Vitality
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
leverage external tools Familiarity with agentic SDKs (ADK, LangChain, LlamaIndex, etc.) Proven track record of deploying AI applications into production environments Strong understanding of API development, microservices, and containerization (Docker, Kubernetes) Knowledge of MLOps best practices Excellent problem-solving skills and ability to work in a fast-paced ...

Software Engineer C# .Net - Sports Trading

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£90,000
earning substantial bonuses. What's in it for you: Salary to £90k Bonus paid every six months based on personal performance (10-25%) Professional development Pension Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Your role: As a Software Engineer within the trading engine team … team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js. Location: You'll be based in plush City ...

Senior Software Engineer

Hiring Organisation
Robert Walters
Location
Warwickshire, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
Collaborating with both in-house engineers and offshore partners to design, develop, and maintain a high-traffic systems.* Embedding AI capabilities throughout the software development process, utilising agentic coding techniques and tools such as CodeX or Claude to optimise workflows and product performance.* Making key architectural decisions that ensure … experience developing scalable web applications using React for frontend interfaces that support high-volume user interactions.* Extensive hands-on expertise with Node.js for backend API development, including integration with AWS cloud services for secure data management.* Demonstrated ability to embed AI capabilities into software products using agentic coding ...

Data Scientist

Hiring Organisation
Stackstudio Digital Ltd
Location
United Kingdom
Employment Type
Permanent
Bias etc. Implemented security best practices, Experience to address spikes and Denial of wallet attacks, DDoS attack and other Spike arrest strategies Knowledge of API Gateways and ISTIO, ability to Diagnose and intercept failures in End to End communication Hands-on Experience with API Development and Microservices ...

Senior Data Scientists/Data Engineers Needed (multiple Roles) - DV/SC Cleared

Hiring Organisation
Areti Group | B Corp™
Location
London Area, United Kingdom
science – scikit-learn, NumPy, matplotlib Relation database experience with data manipulation skills in SQL and large “Big Data” environments. Command knowledge in Python and API Development Excellent grasp of software Engineering practices – Object Orientated Programming, GIT, AWS) CI/CD practices NoSQL Databases Candidates must have security clearance ...

🌳🌳🌳Senior Data Scientists/Analysts - MOD, National Security, Defence, or Government🌳🌳🌳

Hiring Organisation
Areti Group | B Corp™
Location
United Kingdom
matplotlib) Experience in deep learning frameworks such as TensorFlow or PyTorch Knowledge of SQL and relational databases; experience with Big Data environments Familiarity with API development and NoSQL databases Understanding of CI/CD practices , AWS , and GIT Background in working to strict project deadlines Palantir experience ...

Lead Data Platform Engineer

Hiring Organisation
Harnham
Location
United Kingdom
with monitoring, logging and alerting solutions. • Ability to design, build and optimise cloud platform solutions. • Stakeholder management skills and confidence working across multiple teams. • API development experience. • Azure Data Factory knowledge is beneficial. What They Offer • Salary between £80,000 and £85,000 plus bonus. • Comprehensive benefits package ...

Lead Data Platform Engineer

Hiring Organisation
Harnham
Location
Edinburgh, Scotland, United Kingdom
with monitoring, logging and alerting solutions. • Ability to design, build and optimise cloud platform solutions. • Stakeholder management skills and confidence working across multiple teams. • API development experience. • Azure Data Factory knowledge is beneficial. What They Offer • Salary between £80,000 and £85,000 plus bonus. • Comprehensive benefits package ...

Data Scientist

Hiring Organisation
DCV Technologies Limited
Location
Central London, London, United Kingdom
Employment Type
Contract
Bias etc. Implemented security best practices, Experience to address spikes and Denial of wallet attacks, DDoS attack and other Spike arrest strategies Knowledge of API Gateways and ISTIO, ability to Diagnose and intercept failures in End-to-End communication Hands-on Experience with API Development and Microservices ...

C# .NET Web Developer

Hiring Organisation
Interact Consulting Limited
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
skills: Minimum 4 years' commercial C# .NET experience. Strong SQL/MySQL skills (including complex queries). Experience with VueJS and/or Angular. API development and third-party integrations. AWS experience. Desirable skills: AI integration experience (e.g. OpenAI). Use of AI tools (e.g. Claude) in development ...

Backend Engineer

Hiring Organisation
Big Red Recruitment
Location
Royal Leamington Spa, England, United Kingdom
will help design and build integrations between Shopify and a range of internal and third-party systems. The focus of the role is API development using Node.js and deployment to AWS. You will work across the full development lifecycle – from design through to deployment and ongoing improvement. ...

Software Engineer

Hiring Organisation
The Digital Bench Ltd
Location
Australia
Employment Type
Permanent
Software Engineer (Backend/Full Stack) – Move to Australia Location: Perth, Western Australia Salary: Competitive Skills: Java, .NET, Node.js, React, API, Microservices We’re partnering with organisations in Perth to deliver modern applications and digital platforms. Key Responsibilities: - Develop scalable backend and frontend systems - Build APIs and microservices - Support … digital transformation projects Key Skills: - Java, .NET or Node.js - React or modern frontend frameworks - API development Requirements: - Must be eligible to work in Australia Excellent opportunity for UK-based engineers considering relocation. ...