1 to 25 of 118 API Design Jobs

Azure Integration & Automation Manager

Hiring Organisation
Reed
Location
Watford, Hertfordshire, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £85,000 per annum, Inc benefits
Type: Full-time, 3 days a week onsite A new excellent permanent role for an experience Azure Integration & Automation Manager to lead Integration and API capability, designing, delivering, and scaling a modern, API-led integration service that enhances business agility, digital automation, and composable architecture across a leading … combining hands-on technical leadership with service ownership, vendor management, and product-style roadmap management. Day-to-day of the role: Lead Enterprise Integration & API Strategy: Own and evolve the Integration & API Management strategy, aligned with digital and business priorities. Define and promote a composable API architecture ...

API Backend Engineer (MCP)

Hiring Organisation
AMS Contingent
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
services span across Business Services, Corporate banking, Wealth Management, Group Functions, Retail and Investment Banking.On behalf of this organisation, AMS are looking for an API Backend Engineer (MCP) for a 6 Months contract based in Edinburgh or London (Hybrid). Purpose of the Role: As API Backend Engineer … will be responsible for designing, building, and operating secure, scalable APIs and backend services in cloud-native environments. The role centres on API development using modern API gateways on AWS or GCP, applying API standards, DevSecOps, and industry best practices, and delivering solutions within SCRUM agile ways ...

Principal API Architect

Hiring Organisation
TeleWorld Solutions
Location
United States
Employment Type
Permanent
Salary
USD Annual
Overview We are seeking a Principal API Architect to join a cross functional Emerging Technologies team responsible for designing and exposing advanced 4G and 5G network functions, capabilities, and data streams to internal and external consumers. This role will lead the API architecture that enables developers, partners … product teams to securely and efficiently leverage network intelligence and controls. As a senior technical leader, you will define API strategy, guide implementation across teams, and provide architectural and thought leadership in a highly collaborative environment spanning network engineering, cloud platforms, security, and product organizations. TeleWorld helps customers plan ...

Junior Software Engineer - ColdFusion / Python

Hiring Organisation
DivIHN Integration Inc
Location
Corning, New York, United States
Employment Type
Permanent
Salary
USD Annual
Position: Client is seeking a full stack engineer who can both maintain and enhance our existing Adobe ColdFusion Environmental Health and Safety applications and design and build new applications using Python and Vue.js. You will work in an Agile environment, collaborating closely with users, designers, and developers to deliver … support complex research and discovery workflows. Key responsibilities: Own, maintain, and support existing ColdFusion applications, including debugging, documenting issues, and delivering fixes and enhancements Design and build new services and user interfaces using Python (e.g., Django) and Vue.js Develop clean, maintainable, and testable code across the stack (frontend, backend ...

Staff Software Engineer (Java, Glasgow)

Hiring Organisation
LMA Recruitment
Location
Glasgow, Lanarkshire, Scotland, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £600 per day
complex, regulated environment. Key Responsibilities Technical & Modernisation Leadership Lead the modernisation of large-scale legacy systems , transitioning from monolithic architectures to scalable, API-driven microservices. Drive architectural best practices across performance, reliability, security, and maintainability. Engineering Leadership & Delivery Provide hands-on technical leadership while mentoring and managing a large … architecture, product, and business stakeholders. Translate complex regulatory and financial requirements into low-level technical designs and implementation plans . Full-Stack Development Leadership Design and build secure, high-performance applications using Java 17+ , Spring Boot, and Angular . Set standards for frontend engineering, API design ...

Lead Java Engineer

Hiring Organisation
LMA Recruitment
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
complex, regulated environment. Key Responsibilities Technical & Modernisation Leadership Lead the modernisation of large-scale legacy systems , transitioning from monolithic architectures to scalable, API-driven microservices. Drive architectural best practices across performance, reliability, security, and maintainability. Engineering Leadership & Delivery Provide hands-on technical leadership while mentoring and managing a large … architecture, product, and business stakeholders. Translate complex regulatory and financial requirements into low-level technical designs and implementation plans . Full-Stack Development Leadership Design and build secure, high-performance applications using Java 17+ , Spring Boot, and Angular . Set standards for frontend engineering, API design ...

Senior Software Engineer - Transfers (Client Journeys)

Hiring Organisation
Hargreaves Lansdown
Location
Bristol, Avon, South West, United Kingdom
Employment Type
Permanent
that align with company-wide engineering direction Champion continuous improvement; identify tech debt, propose modernisation, and improve developer experience Contribute to architectural decisions around API design, infrastructure patterns, and cross-service integration Collaborate with platform/infrastructure teams to evolve integration patterns Support CI/CD pipelines … team-wide engineering standards Required Skills & Experience Backend/BFF Node.js (v20+) with TypeScript AWS Lambda handler development (both SST and raw CDK patterns) API Gateway (REST/V1) - authorizers, routing, gateway responses Middy middleware framework Integration patterns: cross-account STS AssumeRole, Secrets Manager, DynamoDB, SNS RESTful API ...

Software Engineer-Other - Advanced

Hiring Organisation
Pinnacle Technical Resources
Location
Plano, Texas, United States
Employment Type
Permanent
Salary
USD Annual
experience with AI/ML production systems, and proficiency in modern AI orchestration frameworks and architectures. This role requires a deep understanding of API design, CI/CD pipelines, and cloud services, with a focus on building innovative and responsible AI solutions. Responsibilities: Develop and maintain software applications … using Java or Python. Design and implement AI/ML applications in production environments. Work with RAG architectures, including chunking strategies, embedding models, and vector stores (e.g., Pinecone, OpenSearch, pgvector, FAISS). Utilize AI orchestration frameworks such as LangChain, LlamaIndex, Semantic Kernel, or CrewAI. Leverage AWS Bedrock, Anthropic Claude ...

Senior JavaScript/React Engineer - Remote

Hiring Organisation
Turing
Location
Tittling, Bayern, Germany
Employment Type
Contract
Contract Rate
EUR Annual
able to work across backend and frontend codebases Experience 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 Ideal background: experience building production … code examples, provide precise solutions, and make corrections across the full stack (Python for backend/ML workflows; JavaScript: React, Node.js for frontend/API; plus C/C++, Java, Rust, Go) Evaluate and refine AI-generated code for efficiency, scalability, and reliability across backend and frontend contexts Collaborate ...

Remote Software Developer (LLM Evaluation) - Remote

Hiring Organisation
Turing
Location
Tittling, Bayern, Germany
Employment Type
Contract
Contract Rate
EUR Annual
experience 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 Candidates must be based … benchmarks Build agents that can verify the quality of 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 ...

Remote Senior Python Engineer - Remote

Hiring Organisation
Turing
Location
Tittling, Bayern, Germany
Employment Type
Contract
Contract Rate
EUR Annual
building production-grade software Experience building full-stack applications and deploying scalable 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 Ideal background: engineers who have built … automated verification tools in Python to verify code quality 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 verify ...

Senior Backend Engineer (Python/FastAPI) - Remote

Hiring Organisation
Turing
Location
Tittling, Bayern, Germany
Employment Type
Contract
Contract Rate
EUR Annual
/C++, Rust, and Go Experience building 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 Ideal background: engineers who have built … verify the quality of systems-level and infrastructure 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 verify ...

Technical Product Manager

Hiring Organisation
Creditsafe
Location
Cardiff, Wales, United Kingdom
looking for a Technical Product Manager to join the API team, driving the product direction. This is a highly technical role, the ideal candidate will have worked in a technical role previously moving in to Product or have a passion for development and understand the structure of API … current and future customer needs (including readiness for AI agents and LLM-based consumption). Key to the role will be working with the API Architect and development team to ensure we are building the right thing at the right time. You will work closely with engineering, product, marketing ...

Senior C++ Developer - Manchester / Hybrid

Hiring Organisation
Noir
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £65,000 per annum
Senior C++ Developer - Manchester/Hybrid (Senior C++ Developer, C++ Developer, Software Developer, C++, Qt/QML, API Design, Agile DevOps, Low latency, C4/UML, Senior C++ Developer, C++ Developer, Software Developer) Our client is a global innovator and world leader with one of the most recognisable … integrating with hardware. You will have excellent C++ skills, as well as being an expert with Qt/QML and considerable experience in API Design (Rest, GraphQL and events), Application monitoring and high performance, low latency engineering. You will possess a DevOps mindset and come from an Agile ...

Junior C++ Developer - Manchester / Hybrid

Hiring Organisation
Noir
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£25,000 - £35,000 per annum
Junior C++ Developer - Manchester/Hybrid (Junior C++ Developer, C++ Developer, Software Developer, C++, Qt/QML, API Design, Agile DevOps, Low latency, C4/UML, Junior C++ Developer, C++ Developer, Software Developer) Our client is a global innovator and world leader with one of the most recognisable … Junior C++ Developers with some experience using C++ 20 or later. Any experience with the Qt framework would be helpful, as would experience in API Design (Rest, GraphQL and events), Application monitoring and high performance and low latency engineering. A DevOps mindset and any Agile knowledge would also ...

Software Architect

Hiring Organisation
X4 Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Competitive salary
business-critical integration platform. Partner with senior technology stakeholders to ensure alignment with enterprise architecture principles and future technology strategy. Define architecture standards, design patterns, and engineering best practices. Provide hands-on technical leadership while remaining actively involved in solution design and development. Design secure, scalable, event … large-scale enterprise environments. Strong software engineering background with C# and .NET Core. Experience designing and implementing microservices architectures. Strong understanding of Domain-Driven Design (DDD). Expertise in API design, security, governance, and API Management technologies. Experience with messaging technologies such as RabbitMQ, Kafka ...

Java Developer

Hiring Organisation
scrumconnect ltd
Location
Swansea, West Glamorgan, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 Annual
lives of over 40 million UK citizens. We deliver impactful technology solutions across UK government departments, working at the forefront of user-centred design, agile delivery, and scalable digital services that genuinely make a difference. Visa sponsorship available for eligible candidates Strong focus on work-life balance with … Swansea, South Wales - three days per week on-site Role Overview We are seeking a highly skilled and experienced Java Developer to lead the design, development, and delivery of scalable, secure, and high-performance enterprise applications. The ideal candidate will possess deep expertise in Java and Spring Boot, strong ...

Integration Engineer

Hiring Organisation
Searchability NS&D
Location
City of London, London, United Kingdom
Data & API Integration Engineer/Architect Location: London customer site – 1/2 days p/week on site Salary: Up to £105k DoE plus bonus Clearance: Active SC preferred - can sponsor if not currently held (British passport required) To apply, email: henry.clay-davies@searchability.com We’re working with … leading technology consultancy delivering secure, large-scale digital platforms across public sector and enterprise programmes. They’re looking for an experienced AWS API & Integration Engineer to help design and deliver modern, scalable API-led architectures. This is a hands-on engineering role focused on building secure, cloud ...

Knowledge Graph Architect

Hiring Organisation
Thebes IT Solutions Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
engineer to identify whether the problem sits in graph structure, data integration or platform performance, and resolve it at source. What You Will Do: Design and extend the enterprise knowledge graph architecture as operational requirements grow Implement and maintain graph database infrastructure using Neo4j or equivalent platforms Build … manage ETL/ELT pipelines that ingest group operational data into the knowledge graph accurately and consistently Design and optimise Cypher queries for agent consumption, analytics and operational reporting Integrate the knowledge graph with LLM and RAG architectures to support AI agent knowledge retrieval Implement GraphRAG patterns to enable ...

Java Developer - Payments

Hiring Organisation
Huxley Associates
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£80000 - £130000/annum
senior individual contributor who combines hands-on Java development with architectural leadership, remaining close to implementation and setting the technical standard through design, code-level guidance, and practical problem solving. Design, build, and evolve highly available, high-throughput, zero-downtime systems and internet-facing APIs that can scale … securely for large retail and external client volumes. Lead architectural decisions across API design, domain modelling, integration patterns, resilience, observability, and operational robustness, ensuring the platform is fit for 24/7 global production use. Work across multiple software engineering teams to drive consistency in engineering standards, development ...

Senior Developer

Hiring Organisation
scrumconnect ltd
Location
Taunton, Somerset, United Kingdom
Employment Type
Permanent
Salary
GBP 65,000 - 75,000 Annual
solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. We are passionate about user-centred design, agile delivery, and building digital services that make a real difference. Our teams work at the forefront of innovation, helping organisations transform and deliver … government client. As a Senior Developer, you will bring strong hands-on experience across both .NET and Python, contributing to cloud-native API development, Legacy modernisation, and DevSecOps practices - all within a Microsoft Azure environment and aligned to the highest engineering and security standards. Key Responsibilities Design, develop ...

Associate Data Architect

Hiring Organisation
Elsevier
Location
Greater London, United Kingdom
Employment Type
Full Time
contact the recruiter directly. Data Architect - Submissions Technology Elsevier | Technology | Platform Architecture About the Role We are looking for a Data Architect to help design and evolve the data architecture that powers Elsevier's next-generation publishing and peer-review platforms . You will play a key role … enable collaboration between authors, reviewers, and editors across the global research community . Responsibilities: Define and evolve the data architecture for the Submissions platform Design and maintain the core manuscript and submission domain data models Establish domain-driven data boundaries across platform capabilities Define scalable data access patterns ...

Java/J2EE Application Architect

Hiring Organisation
BC Forward
Location
Pennington, New Jersey, United States
Employment Type
Permanent
Salary
USD 7,367 Annual
will have strong experience in enterprise application and integration architecture, Java/Spring, cloud platforms, and modern engineering practices and a proven ability to design and guide scalable, secure, and maintainable enterprise solutions aligned to strategy and standards. Responsibilities: Lead end-to-end application architecture for multi-tier … scalability, and reliability engineering across platforms. Mentor engineers and influence enterprise-wide architecture practices. Required Skills & Qualifications: 10+ years in software development and application design with Java/J2EE and Spring/Spring Boot. 5+ years as an Application Architect or Technical Lead. Expertise in microservices, REST APIs ...

Software Engineer Mid-level (Java Full Stack)

Hiring Organisation
USAA
Location
Plano, Texas, United States
Employment Type
Permanent
Salary
USD Annual
within the Investment Experience Technology organization at USAA, part of the Technology group. As an engineer on our new investment services platform, you will design and implement high-impact solutions. Collaborate with a strong team to deliver scalable, high-quality software. This is your opportunity to be part … following locations: San Antonio, TX, Plano, TX, Phoenix, AZ, or Charlotte, NC. Relocation assistance is not available for this position. Tasks: Design, develop, code, and test complex technical solutions Investigates and resolves complex application and system technical problems and production issues through troubleshooting techniques. Continually improves operations by conducting ...

Software Engineer Mid-level (Java Full Stack)

Hiring Organisation
USAA
Location
Charlotte, North Carolina, United States
Employment Type
Permanent
Salary
USD Annual
within the Investment Experience Technology organization at USAA, part of the Technology group. As an engineer on our new investment services platform, you will design and implement high-impact solutions. Collaborate with a strong team to deliver scalable, high-quality software. This is your opportunity to be part … following locations: San Antonio, TX, Plano, TX, Phoenix, AZ, or Charlotte, NC. Relocation assistance is not available for this position. Tasks: Design, develop, code, and test complex technical solutions Investigates and resolves complex application and system technical problems and production issues through troubleshooting techniques. Continually improves operations by conducting ...