24 of 24 API Design Jobs in the South East

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
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 … RESTful API design & build, OAS/YAML, Unit Testing, GitLab, CI/CD Pipelines, Jira, Confluence API Developer - Java, TDD, RESTful API design & build, OAS/YAML, GitLab, CI/CD Pipelines, Java Database-Hibernate/JPA, SonarQube, Veracode, Jira, Confluence Click Apply ...

Senior Azure API Engineer

Hiring Organisation
Vermillion Analytics
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£550 - £750 per day
Senior Azure API Engineer Outside IR35 | £550-750/day | Remote/Hybrid UK You must have the right to work in the UK The Role Lead the design and delivery of enterprise-grade API solutions on Azure. You'll architect scalable, secure API platforms that … Platform team, you'll build the critical integration layer connecting internal teams and external customers to consistent, reliable data services. What You'll Do Design and operationalise a lean, zero-trust API platform on Azure API Management Architect microservices and event-driven integration flows at scale Define ...

Dev Sec Ops Engineer

Hiring Organisation
Stackstudio Digital Ltd
Location
Reading, Berkshire, UK
Employment Type
Full-time
Working: Office based 5 Days in Office The RoleDev Sec Ops EngineerRole OverviewWe are seeking a highly skilled Senior Data Platform & Integration Engineer to design, develop, and optimize enterprise data solutions. The ideal candidate will have deep expertise in modern data platforms, integration technologies, and advanced analytics, including …/ML.Key ResponsibilitiesData Platform Management Design and implement solutions using Microsoft Fabric, Snowflake, CosmoDB, Databricks, MongoDB, and traditional RDBMS systems Data Replication & CDC Configure and manage Qlik Replicate and Oracle GoldenGate for real-time data synchronization Data Modeling Develop conceptual, logical, and physical models using ERStudio Integration & Messaging Implement ...

Dev Sec Ops Engineer

Hiring Organisation
Stackstudio Digital Ltd
Location
Wokingham, Berkshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
From £480 to £500 per day
Days in Office The Role Dev Sec Ops Engineer Role Overview We are seeking a highly skilled Senior Data Platform & Integration Engineer to design, develop, and optimize enterprise data solutions. The ideal candidate will have deep expertise in modern data platforms, integration technologies, and advanced analytics, including AI/… ML. Key Responsibilities Data Platform Management Design and implement solutions using Microsoft Fabric, Snowflake, CosmoDB, Databricks, MongoDB, and traditional RDBMS systems Data Replication & CDC Configure and manage Qlik Replicate and Oracle GoldenGate for real-time data synchronization Data Modeling Develop conceptual, logical, and physical models using ERStudio Integration & Messaging ...

Dev Sec Ops Engineer

Hiring Organisation
StackStudio Digital Ltd
Location
Wokingham, Berkshire, UK
Days in Office The Role Dev Sec Ops Engineer Role Overview We are seeking a highly skilled Senior Data Platform & Integration Engineer to design, develop, and optimize enterprise data solutions. Is this your next job Read the full description below to find out, and do not hesitate to make … ideal candidate will have deep expertise in modern data platforms, integration technologies, and advanced analytics, including AI/ML. Key Responsibilities Data Platform Management Design and implement solutions using Microsoft Fabric, Snowflake, CosmoDB, Databricks, MongoDB, and traditional RDBMS systems Data Replication & CDC Configure and manage Qlik Replicate and Oracle ...

Data Analyst - Integrations

Hiring Organisation
Precise Placements
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £65,000 per annum
Overview: We are seeking a technically proficient Data Analyst to join our IT Department. This role will focus on API design and systems integrations , playing a vital part in enabling data-driven decision-making and ensuring seamless data exchange across internal and external platforms. Key Responsibilities: Design … . Ensure data quality, compliance, and governance across all integrations. Support automation efforts by embedding APIs into existing workflows. Work closely with vendors to design solutions aligned with architectural standards and best practices. Key Skills & Experience: Proven experience in a Data Analyst or similar technical role. Strong hands ...

API Developer - London

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Temporary
Salary
£400 - £460 per day
API Developer - London Atrium EMEA are looking for several API Developers to support the Development teams onsite with a client in London. 12+mths contract, 2 days onsite/3 days remote, PAYE/Umbrella options. - API Developer - Java, TDD, RESTful API design & build, OAS/…/CD Pipelines, Java Database-Hibernate/JPA, SonarQube, Veracode, Jira, Confluence Click Apply now or contact Lianne to be considered for the API Developer - London role ...

Software Engineer

Hiring Organisation
Addition
Location
Milton Keynes, Buckinghamshire, England, United Kingdom
Employment Type
Full-Time
Salary
£41,000 - £60,000 per annum
participate in redesigning our core products, working across greenfield and legacy solutions. Your expertise will influence every stage of the product lifecycle—from initial design to deployment, ensuring we meet the evolving needs of our customers with innovative, reliable software. Required Skills: Strong experience in C# and .Net Core … development Proficiency with Web API design and development Solid understanding of REST principles and SOLID design patterns Hands-on experience with Docker, Kubernetes, and cloud platforms such as AWS or Azure Familiarity with Typescript and React (desirable) Knowledge of SQL and NoSQL databases Experience with TDD, Agile ...

AI Chatbot Technical Lead

Hiring Organisation
FDM Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£60,000 - £95,000 per annum
deep technical expertise in Python, LangChain, and OpenAI services, particularly within Azure environments. You will lead the technical delivery of the client’s Chat API, ensuring it is robust, scalable, and continuously improving. Responsibilities Lead the development and enhancement of the Chat API using Python, LangChain, and OpenAI … services on Azure Function Apps Monitor and resolve API bugs and performance issues to ensure high availability and reliability Oversee and troubleshoot data ingestion processes supporting the chatbot’s functionality Collaborate with solution architects, product teams, and the cloud team to deliver a reliable and scalable solution Champion best ...

Senior Full-Stack Developer

Hiring Organisation
Goodman Masson
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £70,000 per annum
work across frontend and backend systems, help shape technical solutions, and ensure best practices are followed throughout the development lifecycle. Key Responsibilities Design, develop, and maintain high-quality software solutions across the full stack Build and integrate APIs, ensuring secure and efficient data exchange Develop user interfaces using modern … Requirements Proven experience as a full-stack developer Strong proficiency in .NET (C#), JavaScript, and modern frontend frameworks Solid experience with SQL databases and API design and integration Excellent problem-solving, communication, and organisational skills Ability to work proactively on independent projects and collaboratively within a team Familiarity ...

Junior DevOps/Backend Developer

Hiring Organisation
Viewture
Location
Pulborough, England, United Kingdom
Haves ✨ Knowledge of containerisation technologies (Docker) Familiarity with Infrastructure as Code (ARM templates, Bicep, Terraform) Exposure to PowerShell or Python scripting Experience with API design principles and RESTful services Knowledge of security best practices and OWASP guidelines Previous experience in fintech, SaaS, or high-growth startups Benefits ✅ Hybrid ...

Solutions Architect

Hiring Organisation
Method-Resourcing
Location
St. Albans, Hertfordshire, South East, United Kingdom
Employment Type
Permanent
Salary
£95,000
Solutions Architect (Integration | API Design) St Albans (Hybrid) Compensation: £95,000 +Bonus +Equity Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They're seeking a Solutions Architect to lead the end-to-end technical … design of mission-critical platforms and services. The Role: We're seeking an experienced Solution Architect to design scalable, secure, and efficient technology solutions that support a major systems consolidation and migration programme. You will be responsible for planning and documenting the decommissioning of up to 30 disparate ...

Senior .NET Developer ASP.NET Core / MAUI

Hiring Organisation
Partnerscale Limited
Location
Bicester, Oxfordshire, South East, United Kingdom
Employment Type
Permanent
Salary
£65,000
Core (MVC and APIs) and Entity Framework Core, alongside cross platform Android apps developed in .NET MAUI. The role involves full lifecycle delivery including design, development, testing and deployment within an agile environment. Youll work with RESTful APIs, JSON based integrations, SQL Server and Azure SQL databases, ensuring performance … improving standards across the team. Required experience: Strong commercial experience with C# and .NET Core/.NET 8+ ASP.NET Core web development and API design .NET MAUI or Xamarin mobile development, ideally Android focused Entity Framework Core including migrations and optimisation SQL Server or Azure SQL database design ...

Senior AI Engineer

Hiring Organisation
Chambers and Partners
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
drive smarter decisions and greater efficiency across Chambers and Partners. In this brand new role, role, as part of our Data team, you’ll design and implement intelligent systems that enhance how we use data, streamline operations, and power innovation across our digital platforms. You’ll play … Main Duties and Responsibilities Data & Retrieval Build robust ingestion pipelines for PDFs/Word/Excel/Audio/JSON and semi-structured sources. Design RAG systems: chunking strategies, document schemas, metadata, hybrid/dense retrieval, re-ranking, and grounding. Manage vector/keyword indexes (e.g., Azure AI Search ...

Senior PHP Full Stack Software Engineer - Supply Chain / Sustainability. Hybrid

Hiring Organisation
RecruitmentRevolution.com
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
want to expand this further - so you’ll help define best practice for AI-enabled engineering across the team. Key Responsibilities: • Lead the design, build and maintenance of custom Moodle plugins, themes and core feature enhancements • Write high-quality, secure, reusable PHP and deliver robust front-end experiences • Architect … across application + infrastructure layers and drive resolution • Lead performance optimisation and scalability improvements • Ensure compliance with accessibility standards, GDPR, and data protection by design • Strengthen QA processes and data integrity (including release readiness) Collaboration & Stakeholder Management: • Work closely with product and design to shape solutions (not just ...

Senior Scala Developer

Hiring Organisation
SF Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £90,000 per annum
following key skills: - At least 4 years commercial Scala programming - Strong framework experience (Akka, Play etc) - Relational database experience - PostgreSQL - MongoDB, NoSQL - RESTful API design and integration experience - Solid unit test understanding - Spec2, scalaTest etc - Experience working in a TDD/BDD driven environment - Containerization experience - Docker, Kubernetes … well-established friendly team then please apply now to be considered and for further details. Senior Scala Developer Up to £90,000 Scala, REST Api, NoSQL, TDD/BDD, functional programming, CI/CD, Play, Akka ...

Senior Node/AWS Developer

Hiring Organisation
Method Resourcing
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 per annum
impact The skills and experience my client are looking for: 5+ years of experience in software engineering, with expertise in Node.js and REST API design. Strong knowledge of AWS and serverless architecture. Strong experience with TypeScript, ensuring clean, efficient, and maintainable code. Experience with CI/CD pipelines using ...

Full Stack Software Engineer

Hiring Organisation
Bolt Technical Limited
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
develop a LAMP-based full-stack platform Audit, refactor, and improve legacy code without full rewrites Introduce modern front-end frameworks (React, Vue, Angular) Design and maintain APIs (REST/GraphQL) Improve performance, security, and scalability Contribute to DevOps, CI/CD, and cloud infrastructure Mentor junior developers … best practices What Theyre Looking For Senior full-stack experience in a LAMP environment Strong PHP and MySQL skills Experience with modern JavaScript frameworks API design experience Comfortable in a hands-on, pragmatic, small-team environment Strong communication and problem-solving skills Package & Benefits ...

Full Stack Node.JS Developer - Reading - Hybrid

Hiring Organisation
Transparent Technology
Location
Reading, Berkshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£60,000
backend and a React/Redux front end, working with complex datasets, real-time dashboards, and advanced visualisations. You'll be involved in API design, PostgreSQL performance optimisation, frontend state management, CI/CD pipelines, and cloud infrastructure, while collaborating closely with Product, Data, and commercial stakeholders. ...

Salesforce &/ React Native Developer

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £550 per day
IR35) Sector: Banking Key Skills & Experience Salesforce +5 years experience AND/OR React Native (Web) +5 years Java +5 years TDD, BDD RESTful API design & build OAS/YAML Unit Testing GitLab CI/CD Pipelines Agile practitioner, SonarQube, Veracode, Jira, Confluence Banking/Financial services background ...

Technical Data Architect

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £95,000 per annum
digital content platform, shaping cloud infrastructure, data models, integrations, APIs and security across the solution. You'll work closely with the platform provider to design and govern a scalable architecture built on modern cloud services such as AWS, Azure or GCP, ensuring reliability, performance and compliance. A key responsibility … schemas and metadata structures, partnering with Solutions Architects to ensure all onboarding aligns with industry best practices. You'll champion best-practice patterns across API design, integration layers, authentication, data pipelines and cloud-native services, with hands-on involvement in troubleshooting and implementation support. The role also produces ...

Application Solution Architect

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £750 per day
Your new company Tier 1 Financial Services Client Your new role This role is for someone who can design and guide thebuilding of complex payment systems, making sure they follow regulations, use modern tech, and meet business needs. It requires deep banking knowledge, strong technical architecture skills, and excellent … PSD3, Open Banking, SEPA rulebooks, UK Payment Regulator mandates, ECB/TARGET services updates, ISO 20022 migration, and AML/CTF regulations. Proficiency in API Design, microservices, and integration platforms. Modernprogramming languages (Java, .NET, Python, JavaScript frameworks) What you'll get in return An exciting opportunity to join ...

Monitoring Tools Support, Assoc Manager / Specialist

Hiring Organisation
Accenture
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
Tooling Expertise: Use Prometheus, Grafana, and Dynatrace for data collection, visualisation, and deep-dive analysis. •Proficiency in Prometheus, Grafana, and Dynatrace. •Strong knowledge of API design, data modelling, and pipelines. •Experience with automation, monitoring platforms, and scripting languages (e.g., Python, PowerShell, Bash, Terraform and Ansible) to enhance operational ...

Senior Developer

Hiring Organisation
Reed.co.uk
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£80,000 per annum
development experience. Proven success in high-performing engineering teams in fast-paced environments. Deep expertise in development with: Python (Django, Flask, or FastAPI) PostgreSQL (design, optimisation, maintenance) Containerisation (Docker/Kubernetes) Event-driven architecture (Kafka/RabbitMQ) Nice to have experience with: TypeScript/JavaScript (NextJS, NodeJS, Tailwind) Terraform … DevOps Experience building and scaling SaaS platforms in production. Strong background in software architecture, microservices, and API design. Hands-on experience with AWS platform. Track record of delivering high-quality software under tight timelines. Strong communication skills, able to motivate and align technical teams. Experience with AI tools, APIs ...