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"api software engineer" Jobs in United Kingdom

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API Software Engineer

NatWest Group · London

MidFull-timeHybrid

Closing date for applications: 27/10/2026 Location London, United Kingdom Salary £64,728 – £91,380 Job typePermanent | Contract typeFull Time Mostly Remote You’ll spend most of your time at home, working with your t

Skills

Software engineeringJavaMicroservices architectureAPI development and integration

Discovered 1 weeks ago

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Software Development Engineer III, Maps API

Mapbox ·

SeniorFull-timeRemote

Mapbox is the leading real-time location platform for a new generation of location-aware businesses. Mapbox is the only platform that equips organizations with the full set of tools to power the navigation of people, pac

Discovered 4 days ago

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Software Engineer (Full Stack)

Callsign · London

MidFull-timeHybrid

As a Full Stack Software Engineer at Callsign, you will design, build, and maintain end-to-end features spanning our high-throughput Java backend services and modern web interfaces. You’ll work in an Agile, collaborative

Skills

JavaSpring BootRESTful APIgRPC

Discovered 3 weeks ago

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Software Engineer - Universal Search

Mark43 · Manchester

MidFull-timeHybrid

Applicants must be authorized to work for any employer in the country in which the role is being hired. We are unable to sponsor or take over sponsorship of an employment visa at this time. About Mark43 Mark43 empowers

Skills

JavaAmazon SNSAmazon SQSKinesis

Discovered 1 weeks ago

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Software Engineer III

Pearson · Rotherham

SeniorFull-timeHybrid

Job Title: .NET/React Developer (Software Engineer III, IC20) – Hellaby Key Responsibilities: Develop, test, and maintain .NET backend services and React UIs for assessment platforms. Integrate cloud-native solutions us

Skills

.NETC#ReactAWS

Discovered 4 weeks ago

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AI engineer with Agentic experience

Luxoft · London

SeniorFull-timeOnsite

Project description Luxoft is initiating the development of a solution designed to generate investment insights based on sales and research materials. The solution will leverage advanced Agentic AI capabilities to signif

Skills

Mandatory Skills Description: • 8+ years of professional software development experience. • Strong backend development experience with Python with a track record of clean, maintainable, testable production code. • Production API design & delivery (FastAPI preferred), including versioning, documentation (OpenAPI/Swagger), and observability. • Cloud experience (AWS preferred) beyond core compute/storage/DB—e.g., eventing, queues, serverless, logging/monitoring, secrets. • Git workflows and CI/CD pipelines • Debugging & problem-solving skills with strong ownership across the SDLC. Generative AI & ML Requirements • Experience building agents • Vector databases and RAG patterns (indexing, chunking, embeddings, retrieval). • LLM integration (OpenAI, Azure OpenAI, Anthropic, or open source models) with prompt design, safety/guardrails, and cost/perf tuning.

Discovered 3 weeks ago

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QA Engineer

Unily ·

MidFull-timeHybrid

About Unily With 20+ years of expertise, Unily unites people, technology, and knowledge into action through the only AI-native employee experience platform. As the intelligent digital front door to work, Unily helps

Skills

Web application testingTest automationPlaywrightC#

Discovered 2 weeks ago

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QA Engineer

Disguise Technologies Ltd · London

MidOnsite

Role: QA Engineer Department: QA Location: UK - London Reports into: Head of QA About us: At Disguise, we are dedicated to providing innovative, reliable, and high-performance software and hardware solutions to our

Skills

PythonAutomated testingSoftware QA processesGit

Discovered 3 weeks ago

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QA Engineer

Unicard · Glasgow

MidOnsite

Reports to: QA Manager Department: QA, Engineering Applicants must be able to demonstrate long-term right to work in the UK. This role is office based from either our Poole, Dorset or East Kilbridge, Glasgow off

Skills

Software quality assuranceTest planningTest case and test script designAutomated testing

Discovered 2 weeks ago

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Senior QA Engineer

Allwyn UK · Watford

SeniorOnsite

At the heart of everything we do is our vision to change lives every day, and our mission to grow The National Lottery responsibly and champion its impact. We are Allwyn UK, part of the Allwyn Entertainment Group –

Skills

Quality assurance and software testingEnd-to-end card payment testingPayment gateway and PSP integration testingWorldpay or comparable PSP platforms

Discovered 3 weeks ago

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