1 to 25 of 104 API Design Jobs

Apigee Developer

Hiring Organisation
ARM
Location
Slough, Berkshire, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £470/day
Slough based - hybrid working - 3 days a week on site Telecoms sector We are seeking a skilled and motivated Apigee Developer to design, build, and manage API solutions that enable secure, scalable, and high-performing integrations across our clients' digital ecosystems. You will play a key role … delivering API-led connectivity strategies using Google Apigee, supporting both internal and external-facing services. This is an exciting opportunity to work in a fast-paced, technology-driven environment, contributing to large-scale transformation programmes and modern API architectures. Key Responsibilities: Design, develop, and deploy APIs using ...

API Backend Engineer (MCP)

Hiring Organisation
AMS Contingent
Location
London, UK
Employment Type
Full-time
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 ...

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 ...

.Net Lead ( Scale Up ) TLNT1 NI

Hiring Organisation
Ocho
Location
Belfast, UK
here. What You'll Be Doing Lead, mentor, and develop a team of .NET engineers, setting standards and elevating engineering quality across the function Design and build services powering ordering, payments, delivery workflows, and analytics Own technical decision-making across architecture, performance, reliability, and security Work closely with product … design, and data teams to translate operational problems into clean, effective software Champion automated testing, continuous delivery, and good engineering practice Guide the platform's evolution towards modular, cloud-native architectures Review code, support career development, and contribute to hiring plans Collaborate with external stakeholders including retail partners ...

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 ...

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 ...

Backend Software Engineer - SaaS - Remote (Northern Ireland) TLNT1 NI

Hiring Organisation
VANRATH
Location
Belfast, UK
genuine impact on technical direction, engineering standards, and long-term platform strategy. As a Senior Backend Engineer, you will take ownership of backend architecture, API design, infrastructure, and platform reliability. You will work closely with developers across the business to improve scalability, security, performance, and operational excellence while … experience working with AWS cloud infrastructure including services such as Lambda, RDS, S3, and IAM * Strong understanding of application security, authentication, authorisation, and secure API design * Experience designing, optimising, and scaling relational databases (PostgreSQL preferred) * Experience with CI/CD pipelines, DevOps practices, and production environments * Comfortable leading ...

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, UK
Employment Type
Full-time
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 ...

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 - 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 ...

Knowledge Graph Architect

Hiring Organisation
Thebes IT Solutions Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
environment Specific semantic ontology and taxonomy experience particularly using tools (Protege and Graphview) Hands-on Neo4j or equivalent graph database capability including Cypher query design and optimisation Experience building ETL/ELT pipelines that feed structured data into graph platforms Understanding of how knowledge graphs integrate with … 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 ...

Lead Solution Architect Endur (ETRM Gas & Power Trading)

Hiring Organisation
BP Energy
Location
South West London, London, United Kingdom
Employment Type
Work From Home
improved valuation,, internal market and others) are architecturally coherent, reusable and aligned with bp's enterprise technology strategy. Establish and chair the GPTI Architecture Design Authority, governing all significant change through structured reviews, design challenges and sign-off gates. Influence and advise VP/SVP-level stakeholders … through risk analytics (VaR, Greeks, Monte Carlo, stress testing), P&L attribution, settlement, invoicing, confirmations and regulatory reporting (REMIT, EMIR, MiFID II, ACER). Design and govern the market connectivity architecture, covering exchange connectivity, broker interfaces, electronic trading platforms, TSO/DSO nomination interfaces and real-time price feeds. ...

AI Solution Architect

Hiring Organisation
City Facilities Management
Location
G5, Glasgow, Glasgow City, City of Glasgow, United Kingdom
Employment Type
Permanent
Location: Glasgow Head Office Full time, permanent role (37.5 hours per week) JOB PURPOSE: This role will be responsible for driving the design, architecture and delivery of AI-powered solutions across the group. It will be critical in implementing production-grade systems that leverage LLMs, with a focus … production engineering - setting technical direction, mentoring a high-performing team, and ensuring AI solutions are robust, scalable, and responsible. PRINCIPAL TASKS AND RESPONSIBILITIES Design and implement secure and scalable LLM-powered applications using modern Generative AI architectures Collaborate with product, data and ops team to identify the issues ...

Backend Developer (Typescript & Go)

Hiring Organisation
Nigel Wright Group
Location
Countess Wear, Devon, UK
Employment Type
Full-time
ideal for someone who thrives in a scaling environment and enjoys balancing delivery with long-term system design. Key ResponsibilitiesBackend Architecture & Development Own the design and evolution of backend services, including architecture, coding standards, and system design Build and maintain production-grade services using modern backend technologies (e.g. … TypeScript/Node.js or equivalent backend environments Deep familiarity with AWS and cloud-native architectures (e.g. Lambda, containers, managed databases) Strong understanding of: System design and distributed systems Database design and performance optimisation API design and service architecture Experience working in product-led, agile environments ...

Backend Developer (Typescript & Go)

Hiring Organisation
Nigel Wright Group
Location
Team Valley Trading Estate, Gateshead, Tyne and Wear, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £80,000 per annum
someone who thrives in a scaling environment and enjoys balancing delivery with long-term system design. Key Responsibilities Backend Architecture & Development Own the design and evolution of backend services, including architecture, coding standards, and system design Build and maintain production-grade services using modern backend technologies (e.g. … TypeScript/Node.js or equivalent backend environments Deep familiarity with AWS and cloud-native architectures (e.g. Lambda, containers, managed databases) Strong understanding of: System design and distributed systems Database design and performance optimisation API design and service architecture Experience working in product-led, agile environments ...

Senior Full Stack Developer (React & C#.NET)

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Contract
Python (pyspark): Experience with data pipelines and analytics is a plus. Power BI: Familiarity with developing dashboards and data models. Architecture: Knowledge of microservices, API design, and event-driven architectures. DevOps/CI/CD: Experience with Azure DevOps, GitLab, GitHub Actions, or similar tools. Cloud Platforms: Proficient … Azure preferred). Databases: Strong skills in SQL Server, PostgreSQL, or other relational databases. containerisation: Experience with Docker and Kubernetes. Key Responsibilities Design & Develop: Create and maintain full stack applications using React JS and C#.NET Core. Build Services: Develop high-performance backend services and RESTful APIs with a focus ...

Lead Software Developer (m/f/d)

Hiring Organisation
Atos Technologies Austria GmbH
Location
Wien, Austria
Employment Type
Permanent
Salary
EUR Annual
feature delivery, and raise quality - while establishing the guardrails that keep AI-generated code correct, reviewed, and production-safe. High-Availability Architecture: Lead the design and evolution of a horizontally scalable, cloud-native services architecture optimized for 99.999% uptime and zero single points of failure. Real-Time Distributed Computing … Design and implement resilient, event-driven systems built on high-throughput distributed messaging (e.g., Kafka, RabbitMQ) to handle concurrent data and media streams. Event-Sourced State Management: Architect event-sourced services and CQRS-style read/write models with deterministic, replayable state - ensuring auditability and consistent recovery across nodes. ...

Senior Developer

Hiring Organisation
Reed.co.uk
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 per annum
venture backed by the strength and stability of an established business. Key Responsibilities End-to-end development of high-quality, scalable SaaS platforms from design through deployment and maintenance. Architect and implement robust backend services primarily using Python and PostgreSQL. Develop and maintain responsive, performant front-end applications with … Provide technical mentorship and leadership to development teams, fostering best practices in coding, testing, and deployment. Participate in code reviews, architecture discussions, and system design decisions. Troubleshoot and resolve complex technical issues across the full stack. Ensure software security, scalability, and performance are maintained at all times. Keep abreast ...

Java Technical Lead

Hiring Organisation
Adecco
Location
Wembley, London, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £85,000 per annum
best practice implementation across: Stateless architecture Health check endpoints Secure secret management (Azure Key Vault) Containerisation standards and deployment readiness The Integration Engine Lead API and integration strategy, including: RESTful API design OAuth2 authentication flows (including FusionAuth) Event-driven systems via Azure Service Bus Transactional email logic ...

Solutions Architect

Hiring Organisation
Euro Car Parks
Location
Central London, London, United Kingdom
Employment Type
Permanent
Ireland providing specialist services to a wide range of blue-chip clients. The role We are seeking technical polyglots who enjoy both technical architectural design, hands-on coding and peer reviews, though also like the idea of the equally important social/client-facing aspect of the role. … development architecture as well as supporting business analysts and product owners in planning and story-mapping for new development. You will act as technical design authority (TDA) for delivery of technical stories and produce technical documentation artefacts to support the delivery process. Main Responsibilities Duties will include: The design ...

Software Engineer

Hiring Organisation
Sanderson Government and Defence
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Permanent
Java, Python, React , and MongoDB to join a high-performing engineering team . You will work across the full development lifecycle, contributing to the design, build, and delivery of high-quality software solutions. The role requires strong technical expertise, proactive problem-solving, and the ability to collaborate effectively … multidisciplinary teams. Key Responsibilities Design, develop, test, and deploy high-quality software solutions using Java , Python , React , and MongoDB . Participate in solution design, estimation, and technical decision-making. Develop reusable components and shared services. Work within Agile teams to support sprint planning, refinement, and retrospectives. Ensure code ...