51 to 75 of 95 API Development Jobs in the UK

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 ...

Back End Developer

Hiring Organisation
ICOPIFY
Location
Liverpool, England, United Kingdom
available Role Overview We are seeking an experienced Back-End Developer with strong Laravel and PHP expertise to play a key role in the development and scaling of our marketplace platform. You will be responsible for designing and building robust, secure, and high-performance backend systems that support core … marketplace functionality and evolving business requirements. Key ResponsibilitiesSystem Architecture & Development Design and implement scalable, maintainable backend architecture Apply SOLID principles, clean code practices, and clear separation of concerns Develop modular components using service-layer and repository patterns Core Platform Features User authentication and role-based authorisation (Sanctum/Passport ...

Senior Java Developer

Hiring Organisation
Morson Edge
Location
Greater Manchester, North West, United Kingdom
Employment Type
Contract
Contract Rate
£400 - 700 per day + None
second-line and occasional out-of-hours support Communicate technical ideas clearly to non-technical stakeholders Promote best practices and contribute to the wider development community Essential Skills & Experience Strong recent experience with Java 21 or later Excellent grasp of TDD and BDD Experience with large microservice architectures Agile … delivery experience API development (internal and external) Automated testing for CI/CD environments Comfortable working on Linux or macOS Ability to learn new tools and technologies quickly Understanding of responsive web design Desirable Skills Jackson, JAX-RS, Mockito Messaging platforms (Kafka or ActiveMQ) MongoDB or other document ...

Data Scientist

Hiring Organisation
Stott & May Professional Search Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£415 - £467 per day
hallucination, PII filtering, HAP, and bias mitigation * Experience implementing security best practices and mitigating spikes, DDoS attacks, and other threat scenarios * Knowledge of API gateways, ISTIO, and diagnosing end-to-end communication failures * Hands-on experience with API development and microservices architecture Desirable Skills, Knowledge and Experience ...

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
London, United Kingdom
Employment Type
Contract
Contract Rate
From £400 to £450 per day
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 ...

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 ...

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 ...

Python Developer

Hiring Organisation
Henderson Scott
Location
Edinburgh, Midlothian, Scotland, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£480 - £510 per day + Umbrella - inside IR35
part of a remotely distributed team. As such, I am keen to speak with candidates who have: Strong experience with Python in an application development role Proven experience writing SQL for relational databases Confident working with JSON in application and integration workflows Hands-on experience with API development ...

Backend Engineer - Node.js / AWS

Hiring Organisation
Big Red Recruitment Midlands Limited
Location
Desborough, Northamptonshire, United Kingdom
Employment Type
Permanent
Salary
£40000 - £50000/annum £40 000 - £50 000
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. ...

Backend Engineer - Node.js / AWS

Hiring Organisation
Big Red Recruitment Midlands Limited
Location
Leamington Spa, Whitnash, Warwickshire, United Kingdom
Employment Type
Permanent
Salary
£40000 - £50000/annum £40 000 - £50 000
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. ...

Backend Engineer

Hiring Organisation
Big Red Recruitment
Location
Desborough, 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. ...

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. ...

Applications Developer x2

Hiring Organisation
TXP Technology x People
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£525 - £526 per day
Role A leading Defence Client is seeking an experienced Applications Developer to support a high-profile, secure programme. This role involves delivering robust application development within a sensitive defence environment. Key Responsibilities Develop, enhance, and maintain application components according to project requirements. Build, test, and deploy APIs and data … resolve application and integration issues. Support Azure-based application hosting and associated services. Essential Skills & Experience Candidates must have experience with: Python SQL JSON API development (WebMethods, Kong) Containerised deployments ( Docker ) Microsoft Azure ...

Senior AI Engineer

Hiring Organisation
HCLTech
Location
City of London, London, United Kingdom
architects and data teams, you will turn conceptual designs into robust, production-grade software using Amazon Bedrock and modern Python frameworks. Key Responsibilities · Agent Development: Build and deploy sophisticated AI agents using Python, LangChain, and LangGraph. Implement tool calling (function calling), memory persistence, and error-handling logic for robust …/CD pipelines for AI models and manage prompt versioning and evaluation metrics. Technical Skills & Requirements · Programming: Expert proficiency in Python (Pydantic, AsyncIO, API development with FastAPI/Flask). · AWS AI Stack: Hands-on experience with Amazon Bedrock APIs, SageMaker (Training Jobs, Inference Endpoints), and Vector Databases. ...

Java Developer- SC Clearance Essential

Hiring Organisation
Opus Recruitment Solutions Ltd
Location
Newcastle Upon Tyne, Tyne and Wear, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 per day
Public Sector project. The role involves building Java-based microservices within an agile, pair-programming environment. Skills Required: Java 21+ TDD/BDD Microservices API development Automated testing for CI/CD Agile & pair programming Linux/Unix MongoDB or similar Essential: Active SC clearance Ability to work ...

Applications Developer CGEMJP

Hiring Organisation
Experis
Location
United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
/d Umbrella inside IR35 Clearance required: Active SC Clearance is required and you must be a Sole UK National Skills: Python SQL JSON API development (WebMethods, Kong) Containerised deployments (Docker) Microsoft Azure All profiles will be reviewed against the required skills and experience. Due to the high ...

Applications Developer CGEMJP00337040

Hiring Organisation
Experis
Location
Nationwide, United Kingdom
Employment Type
Contract
/d Umbrella inside IR35 Clearance required: Active SC Clearance is required and you must be a Sole UK National Skills: Python SQL JSON API development (WebMethods, Kong) Containerised deployments (Docker) Microsoft Azure All profiles will be reviewed against the required skills and experience. Due to the high ...

Full Stack Engineer (AI Startup)

Hiring Organisation
Oliver Bernard
Location
United Kingdom
performing international team Ideal Background – B2B SaaS experience and startup mindset – 6+ years full-stack experience, can build end-to-end features – Proven REST API development with Python – Strong React + TypeScript skills – Bonus: Production level LLM integration experience – Work independently in a small, senior team, shaping architecture ...

Laravel Developer

Hiring Organisation
Proactive Appointments
Location
Sheffield, South Yorkshire, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
VueJS framework and its ecosystem is highly desirable Competent with Git for source control. Understanding of MySQL, HTML, CSS, JavaScript Agile Methodologies Any RESTful API development useful Excellent Communication skills If this could be your next career move within an expanding employee-centric company, please drop across your ...

Windows Engineer (Python - Firewalls - Ansible - Jenkins - API) - Sheffield (Hybrid) - Inside IR35

Hiring Organisation
iBSC
Location
Sheffield, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
with VMware , virtualisation technologies, and OpenShift Solid networking knowledge including TCP/IP, ports, Firewalls, and network security Experience with MuleSoft and Postman for API development, testing, and integration Strong troubleshooting, analytical, and problem-solving skills Ability to work across technical and business teams and communicate clearly with ...

Asset Management Specialist

Hiring Organisation
SRMD Ltd
Location
United Kingdom
stakeholders to gather requirements and translate them into technical solutions Troubleshoot and resolve platform issues, ensuring optimal performance Required Skills: Strong experience in ServiceNow development and administration Hands-on expertise in ITSM, ITOM, HRSD, CMDB, Asset Management, PPM/SPM, and GRC modules Proficiency in JavaScript (ServiceNow scripting … good knowledge of Java Experience with databases like Oracle and MySQL Knowledge of REST/SOAP integrations and API development Strong problem-solving and communication skills ...

AI Engineer - Payments

Hiring Organisation
Crisil
Location
City of London, London, United Kingdom
enabled payment solutions. The role requires someone who can engage with business stakeholders, design AI-driven architectures, and also contribute hands-on to development and deployment, particularly in AI MLOps environments. This is not a pure data scientist role or a pure BA role but a design + build … handling AML pattern detection Define model selection approach (ML, LLM, GenAI, rule-based hybrid models) Design scalable, cloud-native AI architectures 3. Hands-on Development Develop ML models/AI workflows using Python and relevant frameworks Build APIs and integration layers for embedding AI into payments systems Work with ...