1 to 25 of 53 API Design Jobs in London

Technical Architect

Hiring Organisation
IPS Group
Location
London, United Kingdom
Employment Type
Permanent
designed to enable long-term career progression. Role Summary Our client is seeking an experienced Technical Architect with strong expertise in integration architecture, systems design best practice, and API design. The role will take technical ownership of the organisations enterprise technology landscape. This is a pivotal position within … wide integration strategy, including the governance of integration patterns (such as synchronous APIs, event-driven architecture, asynchronous messaging, and batch ETL). Lead the design and documentation of internal and external APIs, ensuring best practice in RESTful design, versioning, and OpenAPI standards. Work with Engineering and Data teams ...

Technical Architect

Hiring Organisation
IPS Group
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£100,000 - £120,000 per annum
designed to enable long-term career progression. Role Summary Our client is seeking an experienced Technical Architect with strong expertise in integration architecture, systems design best practice, and API design. The role will take technical ownership of the organisation’s enterprise technology landscape.This is a pivotal position within … wide integration strategy, including the governance of integration patterns (such as synchronous APIs, event-driven architecture, asynchronous messaging, and batch ETL). Lead the design and documentation of internal and external APIs, ensuring best practice in RESTful design, versioning, and OpenAPI standards. Work with Engineering and Data teams ...

Mulesoft Developer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£470 - £520/day
Project Manager, architects, clients & other stakeholders to implement MuleSoft APIs. This role will require knowledge of MuleSoft's Anypoint Studio & Anypoint Platform, which includes Design Center, Runtime Manager, API Manager, Exchange, etc. You must be capable of understanding business requirements, working with stakeholders & implementing complex integrations. Responsibilities: Designing … stakeholders to understand business requirements & translate them into integration solutions. Required Skills: Good experience of: Integration concepts & technologies. MuleSoft Anypoint Platform & components (Mule ESB, API Manager, CloudHub, etc.) Java programming & experience with other programming languages such as XML, JSON, SQL Agile software development methodologies. Cloud-based integration platforms such ...

Senior Backend Engineer

Hiring Organisation
Reelables
Location
City of London, London, United Kingdom
data streams, ensures millisecond latency for global supply chains, and scales seamlessly as we grow from millions to billions of tracking events. Think API performance and data processing efficiency meets cutting-edge innovation. You'll be designing highly performant and distributed services that ingest and process location and temperature … breakthrough technology is already transforming how companies track and manage their shipments globally, and we're just getting started. Responsibilities Core Service Architecture & Scale Design, develop, and maintain highly scalable back-end services that handle millions of concurrent data ingestion events and user requests. Architect and optimize data processing ...

Senior Backend Engineer

Hiring Organisation
Reelables
Location
London Area, United Kingdom
data streams, ensures millisecond latency for global supply chains, and scales seamlessly as we grow from millions to billions of tracking events. Think API performance and data processing efficiency meets cutting-edge innovation. You'll be designing highly performant and distributed services that ingest and process location and temperature … breakthrough technology is already transforming how companies track and manage their shipments globally, and we're just getting started. Responsibilities Core Service Architecture & Scale Design, develop, and maintain highly scalable back-end services that handle millions of concurrent data ingestion events and user requests. Architect and optimize data processing ...

Remote Software Engineer

Hiring Organisation
Turing
Location
London, UK
Employment Type
Full-time
Build agents that can verify the quality of the code and identify error patterns. Hypothesize on steps in the software engineering cycle (prototyping, architecture design, API design, production implementation, launch, experiments, monitoring, operational maintenance) and evaluate model capabilities on them Design verification mechanisms that can automatically … . Strong expertise in building full-stack applications and deploying scalable, production-grade software using modern languages and tools. Deep understanding of software architecture, design, development, debugging, and code quality/review assessment. Excellent oral and written communication skills for clear, structured evaluation rationales. Engagement Details: Commitment: flexible engagement ...

Remote Software Engineer

Hiring Organisation
Turing
Location
Central London, UK
Build agents that can verify the quality of the code and identify error patterns. Hypothesize on steps in the software engineering cycle (prototyping, architecture design, API design, production implementation, launch, experiments, monitoring, operational maintenance) and evaluate model capabilities on them Design verification mechanisms that can automatically … . Strong expertise in building full-stack applications and deploying scalable, production-grade software using modern languages and tools. Deep understanding of software architecture, design, development, debugging, and code quality/review assessment. Excellent oral and written communication skills for clear, structured evaluation rationales. Engagement Details: Commitment : flexible engagement ...

Remote Software Engineer

Hiring Organisation
Turing
Location
East London, UK
Build agents that can verify the quality of the code and identify error patterns. Hypothesize on steps in the software engineering cycle (prototyping, architecture design, API design, production implementation, launch, experiments, monitoring, operational maintenance) and evaluate model capabilities on them Design verification mechanisms that can automatically … . Strong expertise in building full-stack applications and deploying scalable, production-grade software using modern languages and tools. Deep understanding of software architecture, design, development, debugging, and code quality/review assessment. Excellent oral and written communication skills for clear, structured evaluation rationales. Engagement Details: Commitment : flexible engagement ...

Remote Software Engineer

Hiring Organisation
Turing
Location
West London, UK
Build agents that can verify the quality of the code and identify error patterns. Hypothesize on steps in the software engineering cycle (prototyping, architecture design, API design, production implementation, launch, experiments, monitoring, operational maintenance) and evaluate model capabilities on them Design verification mechanisms that can automatically … . Strong expertise in building full-stack applications and deploying scalable, production-grade software using modern languages and tools. Deep understanding of software architecture, design, development, debugging, and code quality/review assessment. Excellent oral and written communication skills for clear, structured evaluation rationales. Engagement Details: Commitment : flexible engagement ...

Remote Software Engineer

Hiring Organisation
Turing
Location
City of London, Greater London, UK
Build agents that can verify the quality of the code and identify error patterns. Hypothesize on steps in the software engineering cycle (prototyping, architecture design, API design, production implementation, launch, experiments, monitoring, operational maintenance) and evaluate model capabilities on them Design verification mechanisms that can automatically … . Strong expertise in building full-stack applications and deploying scalable, production-grade software using modern languages and tools. Deep understanding of software architecture, design, development, debugging, and code quality/review assessment. Excellent oral and written communication skills for clear, structured evaluation rationales. Engagement Details: Commitment : flexible engagement ...

Data Analyst

Hiring Organisation
Computappoint
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
technically proficient Data Analyst to join the IT Department within the Strategy & Architecture Team. This role will have a strong focus on API design and integrations between systems. This role is critical in enabling data-driven decision-making and ensuring seamless data exchange across internal systems and external … platforms. Key Responsibilities Analyse and interpret complex datasets to support IT operations and strategic initiatives. Design, document, and maintain APIs that facilitate secure and efficient integration of data between systems. Create data dictionaries that describe data structures, elements, their meanings, and relationships within a dataset or database. Create Business ...

IT Project Manager - MES Integration Lead

Hiring Organisation
Impellam Group
Location
London, UK
Employment Type
Full-time
. Role Overview As the MES Integration Lead, you will: Lead the integration workstream for the MES program, aligning with architecture and business objectives Design and implement integration solutions using SAP BTP Integration Suite, including: Cloud Integration (CPI) for iFlows and system connectivity API Management for secure … scalable API exposure Event Mesh for event-driven architecture and asynchronous communication Define and enforce integration standards, governance, and best practices Collaborate with MES, ERP, and other system teams for smooth data exchange Troubleshoot and resolve complex integration issues across multiple environments Provide technical leadership and guidance to internal ...

IT Project Manager - MES Integration Lead

Hiring Organisation
Impellam Group
Location
South London, UK
Employment Type
Full-time
. Role Overview As the MES Integration Lead, you will: Lead the integration workstream for the MES program, aligning with architecture and business objectives Design and implement integration solutions using SAP BTP Integration Suite, including: Cloud Integration (CPI) for iFlows and system connectivity API Management for secure … scalable API exposure Event Mesh for event-driven architecture and asynchronous communication Define and enforce integration standards, governance, and best practices Collaborate with MES, ERP, and other system teams for smooth data exchange Troubleshoot and resolve complex integration issues across multiple environments Provide technical leadership and guidance to internal ...

AI UX Engineer - £350PD - Remote

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£300 - £350 per day
Embedding model optimisation and semantic search Context window management and chunking strategies MCP & Tool Integration Model Context Protocol (MCP) implementation LLM tool calling and API design AWS Lambda integration with agents AI Safety & Evaluation Guardrail implementation (hallucination detection, toxicity filtering) Response evaluation frameworks and A/B testing … Advanced Python AWS SDK (boto3) Infrastructure as Code awareness (CloudFormation/Terraform) Git and CI/CD for ML systems UX Engineer - Skills & Requirements Design & Prototyping Advanced Figma skills Wireframing, interactive prototyping, and design systems Responsive web and mobile design Conversational UX Chatbot and conversational interface design ...

AI UX Engineer - £350PD - Remote

Hiring Organisation
Tenth Revolution Group
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£300 - £350/day
Embedding model optimisation and semantic search Context window management and chunking strategies MCP & Tool Integration Model Context Protocol (MCP) implementation LLM tool calling and API design AWS Lambda integration with agents AI Safety & Evaluation Guardrail implementation (hallucination detection, toxicity filtering) Response evaluation frameworks and A/B testing … Advanced Python AWS SDK (boto3) Infrastructure as Code awareness (CloudFormation/Terraform) Git and CI/CD for ML systems UX Engineer - Skills & Requirements Design & Prototyping Advanced Figma skills Wireframing, interactive prototyping, and design systems Responsive web and mobile design Conversational UX Chatbot and conversational interface design ...

Senior Backend Engineer (Telco Integration Lead) Golang

Hiring Organisation
Ventula Consulting Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
seeking a foundational engineer to own our single greatest strategic asset: our unique, privileged access to network-level intelligence via the GSMA CAMARA API standard. This is our right to win, and you will be the engineer responsible for building the bridge to it. You will be the Critical … build the Security Signal Ingestion path, the secure, low-latency, and out-of-band data channel connecting to our founding members' network API gateways. ? Architect and implement a carrier-agnostic, vendor-agnostic connector layer to consume RESTful APIs from a heterogeneous global landscape of telco partners and IMS vendors ...

Solutions Architect - 2 Days Either London or Peterborough/Rest Remote

Hiring Organisation
ZENZO DIGITAL LTD
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£85,000
tech and designing new. Some of their core and long-standing solutions will be completely replaced to modern architecture and technology. Experience Seeking: Solution design for data engineering and software engineering projects Experience of workflows, orchestrations and data/system integration DevOps and end to end data pipeline Prior … scripting Previous .Net Development experience nice to have Previously designed solutions to move solutions from on-premise to Cloud AI and Machine Learning understanding Design Patterns Data Fabric, Snowflake or other Kubernetes and API Design' Exposure to Technical Design Authority and Governance Team Lead experience Agile ...

Front End React Developer

Hiring Organisation
Ascend Consulting
Location
North West London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £80,000 per annum
will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important. Responsibilities Working in a team of Front-End engineers Writing clear & concise code Working closely with Back-End engineers Participate … architecture design code reviews API design with the Back-End engineers and other team members to establish more functional, cohesive code Create, maintain documentation while implementing the best coding practices standards Hands-on approach Participation in sprint rituals What you’ll need 6+ years experience developing large ...

Senior Software Engineer

Hiring Organisation
Oracle
Location
South London, UK
Employment Type
Full-time
Join OCI to design and deliver cloud-scale DDoS protection as part of our edge security platform. You'll design and ship high-performance detection and mitigation systems, automate operations end-to-end, and help define the technical foundation for customer-facing DDoS capabilities. Basic qualifications 6+ years … Proficiency in one or more: Java/Python/C Rust/Go Strong preference for Java for control-plane/services. Strong systems design skills: concurrency, memory management, performance tuning, API design, and distributed systems fundamentals. Experience with DevOps at scale: CI/CD, automated testing ...

Senior Manager, DDOS Engineering and Development

Hiring Organisation
Oracle
Location
London, UK
Employment Type
Full-time
risk Govern threat modeling, architecture reviews, and risk remediation; ensure auditability and policy adherence for Tier 0 services. Embed security and privacy by design; enforce zero trust principles and secure service-to-service communication (mTLS, policy). Hire, onboard, and grow a diverse, high-performing team; set clear OKRs … provide ongoing coaching and feedback, and drive career paths and succession planning. Mentor senior ICs and emerging leaders; establish technical ladders, design reviews, and knowledge-sharing rituals. Cross-functional leadership and communications Partner closely with Product, SRE, Networking, Architecture, and Security to land integrated capabilities and resilient outcomes. Provide ...

Cloud Platform Engineering Lead / DevOps Lead

Hiring Organisation
KBC Technologies UK LTD
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Hybrid Employer: Global Technology Consultancy Mandatory Skill: Google Kubernetes Engine (GKE) Role Purpose We are seeking a hands-on Cloud Platform Engineering Lead to design, build and operate secure, automated cloud platform capabilities. You will enable product teams to deliver API-first services rapidly and reliably, while balancing … deep technical work with coaching and engineering leadership. Key Responsibilities Design, build, and operate platform capabilities using Infrastructure-as-Code and modern CI/CD . Embed secure-by-design principles from architecture to runtime. Define and manage SLOs/SLIs ; drive observability, performance tuning, and automation. Promote ...

Senior Back End Engineer (.NET/Azure)

Hiring Organisation
E-Solutions IT Services UK Ltd
Location
Central London, London, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
client mortgage journey. We’re looking for an experienced engineer who combines deep .NET and Azure expertise with a collaborative, pragmatic mindset. You’ll design and implement the backend services, APIs, and integrations that power our lending ecosystem, while working closely with front-end, product, and infrastructure teams. This … engineering principles. You’ll be part of a team where architectural thinking, reliability, and craftsmanship are valued just as much as delivery speed. Responsibilities Design, build, and maintain backend services using C# (.NET 8+) and Azure Services. Develop and secure Modern Distributed Systems using Azure Container Apps, integrating with ...

Senior Product Manager

Hiring Organisation
Tiro Partners
Location
London, United Kingdom
Employment Type
Permanent
Salary
£60000 - £90000/annum
/API/Ecommerce/Product design/PDP/Tourism Role: Product Manager Compnay: Ecommerce Location: East London Onsite: Hybrid 2/3 day per week onsite Salary: up to £90,000 + Bonus We're looking for an experienced Product Manager to own and evolve core … shape platform-adjacent products including APIs, pricing models, and rules-based systems Develop product plan to boost CRO. Partner closely with engineers on API contracts, integrations, and architectural trade-offs Translate complex workflows and data flows into clear, scalable product structures Lead cross-functional discussions, aligning technical decisions with ...

Senior Product Manager

Hiring Organisation
Tiro Partners Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £90,000 per annum
/API/Ecommerce/Product design/PDP/Tourism Role: Product Manager Compnay: Ecommerce Location: East London Onsite: Hybrid 2/3 day per week onsite Salary: up to £90,000 + Bonus We're looking for an experienced Product Manager to own and evolve core … shape platform-adjacent products including APIs, pricing models, and rules-based systems Develop product plan to boost CRO. Partner closely with engineers on API contracts, integrations, and architectural trade-offs Translate complex workflows and data flows into clear, scalable product structures Lead cross-functional discussions, aligning technical decisions with ...

Senior Software Engineer (PHP)

Hiring Organisation
True9
Location
London, UK
Employment Type
Full-time
front-end teams in a fast-paced Agile environment. You'll thrive in this role if you have: Strong working experience in PHP, OOP, design patterns and principles, including SOLID Strong understanding of automated testing practices Expertise in performant MySQL and relational database design Hands-on experience with … API design and development Comfortable using modern tooling, including Docker, Git, PHPStan, PHPUnit and CI/CD Experience in Symfony Familiarity with cloud services, particularly AWS Experience in agile environments and contributing to team collaboration A proactive, solutions-oriented mindset and excellent communication skills The tech stack ...