11 of 11 Contract API Development Jobs in London

Java Developer - Java Frameworks, SC Cleared

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
Croydon, London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £475/day
Cleared Java Developer to support the delivery of modern, cloud-based applications within an AWS environment. The role will involve backend development, API delivery, and contributing to greenfield microservices-based solutions. Hybrid working is required, with on-site presence in Croydon . Key Skills (Essential) Strong Java development experience Spring Boot SQL and report writing Experience working in AWS environments EBSA experience API development and microservices architecture Experience with CI/CD pipelines Containerisation using Docker and/or Kubernetes Experience delivering greenfield development projects Active SC Clearance Desirable Skills React Next.js Experience working ...

AI Engineer

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £450 to £475 per day
with GenAI, Gemini or Open source LLMs, Train, finetune and Onboard new LLMs Experience in building GenAI applications using Python Hands-on Experience with API Development and Microservices architecture and End to End integrations Knowledge of RAG (Retrieval-Augmented Generation) and ADK, MCP Solid understanding of LLMs, prompt … engineering, and graph-based workflows Hands-on Experience with API Development and Microservices architecture Experience in CI/CD pipelines, and containerization (Docker/Kubernetes), Harness and Git actions Practical experience implementing LLM and GenAI solutions, including prompt engineering, model fine tuning, RAG pipelines, embeddings, and vector databases ...

Python Full Stack Developer

Hiring Organisation
Syntax Consultancy Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£550/day Inside IR35
chance to work with a leading global IT and Digital transformation business specialising in Government projects: Key experience, responsibilities + tasks: Strong Python development expertise , develop and maintain Python code for data processing, API development and integration with the Azure Databricks environment. Senior experience in software development, with a focus on both front-end and back-end development. Front-end development using React, Angular, Vue.js, Front-end and back-end development of applications and APIs interacting with the Azure Databricks platform. Experience with Azure cloud platform and services. Azure Databricks. containerisation (Docker) and orchestration ...

Senior Python Developer

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £540 per day
IR35 - Umbrella only About the Role: 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. … 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 ...

Solution Architect

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £506/day
/3 days on site Duration: 04/05/2027 Rate- £506 MUST BE PAYE THROUGH UMBRELLA Key Responsibilities: Lead and manage software development projects using Java, Python, Typescript, AWS, React JS, Angular, and other technologies. Collaborate with cross-functional teams to define project scope, objectives, and deliverables. … data, wherever possible Work with cross-functional teams to deliver the defined scope, objectives, and deliverables on technical grounds Facilitate communication between stakeholders, development teams, and other departments. Ensure adherence to software development lifecycle (SDLC) processes and best practices. Develop detailed project plans, including timelines, resource allocation ...

Technical Product Owner (R based)

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £550 to £600 per day
libraries such as: tidyverse (data manipulation and visualization) data.table (high-performance data processing) caret/mlr3 (machine learning) shiny (interactive dashboards) plumber (API development) Create reusable R modules and packages for internal use Configure and manage R environments across local, server, and cloud platforms Optimize R code … privacy standards Promote coding standards, testing, and peer reviews for R scripts Evaluate and recommend new tools or libraries to enhance productivity Working with development teams to facilitate package development and deployment Configuring and managing package sources, including mirrors and custom repositories Ensuring the availability and accessibility ...

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 ...

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 ...

Data Scientist

Hiring Organisation
Infoplus Technologies UK Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £450 to £500 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 ...

Senior Full Stack Engineer

Hiring Organisation
Access Computer Consulting
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £440/day
Java Full Stack, React, Kubernetes & Docker. Experience in building responsive, component based user interfaces using modern front end frameworks. Hands on expertise in API design and development (REST/JSON), including versioning and backward compatibility. Experience with UI testing, component testing, and front end build tooling. Experience ...

Lead Azure Platform Engineer

Hiring Organisation
Opus Recruitment Solutions
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £625/day InsideIR35
Lead Azure Platform Engineer - API Platform (APIM/Apigee) | £600- £625 InsideIR35 | 6 month initial | Fully Remote The role is to take ownership and lead the design, development, and maintenance of the API Platform along with conducting reviews of API designs to ensure they align with … standards and governance requirements of the platform. · Collaborate with cross-functional teams to define API requirements. · Ensure the platform is scalable, secure, and performs to meet the current and future needs. · Set technical standards and best practices for API development. Key requirements: - Work with delivery leads and product ...