Lead Software Engineer Python Java Jobs in London, UK

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Back End Engineer (Mid/Sr Level) Ruby

Sensor Tower’s digital intelligence platform provides unparalleled insight into market trends, advertising, competitor’s strategies, and consumer/user audience across mobile, web, and gaming. Sensor Tower’s insights are trusted by more than 2,500 enterprises worldwide across tech, retail/commerce, entertai ...

QA Engineer – Public Sector, CI/CD & Test Automation

Methods is seeking a QA Engineer to work on public sector projects, ensuring high-quality functional and non-functional testing. Candidates should possess strong Java coding skills and experience with automated testing frameworks like Serenity. Responsibilities include defect management and collaboration with de ...

Senior SRE: AI Driven Cloud Reliability & Observability

Navan is looking for a passionate Senior Site Reliability Engineer to join their team in London. This role involves designing and developing cloud infrastructure while collaborating with development teams to ensure services are reliable and efficient. Candidates should have over 5 years of relevant experience, s ...

Senior Full Stack Engineer — End to End Delivery & AI

hackajob is seeking a Senior Specialist, Full-Stack Engineer based in London. This role emphasizes the design and maintenance of backend systems along with the contribution to modern web frontends. The ideal candidate will have strong proficiency in Java and Spring, experience in CI/CD processes, and a solid und ...

Senior Backend Engineer, Payroll Foundations Hybrid Equity

A tech company in the HR sector is seeking a Senior Backend Engineer to join their Payroll Foundations team. This role involves building and maintaining backend systems for payroll processing, ensuring accuracy and reliability. Candidates should have strong experience in backend systems, proficiency in Kotlin or ...

Senior Backend Engineer Fraud & Crypto Platforms

A leading crypto company in Greater London is looking for a Senior Back-End Engineer. This role involves developing scalable APIs and optimizing systems while ensuring security and performance. Candidates should have extensive experience with JVM languages like Java or Kotlin, and a customer-focused mindset. The ...

Senior AI Agentic Automation Engineer – Remote

A tech company specializing in automated solutions is seeking a Senior Engineer to design and implement enterprise-grade AI systems. The role involves working on orchestration systems that leverage BPMN and AI components while ensuring operational excellence. Candidates should have over 5 years of experience wit ...

Senior Full Stack Engineer — End to End Delivery & AI

hackajob is seeking a Senior Specialist, Full-Stack Engineer based in London. This role emphasizes the design and maintenance of backend systems along with the contribution to modern web frontends. The ideal candidate will have strong proficiency in Java and Spring, experience in CI/CD processes, and a solid und ...

Senior React Native Mobile Engineer — FinTech

Java Script Works in Greater London is seeking an experienced Mobile Engineer to contribute to an exciting new product within a successful financial company. The ideal candidate is comfortable in a fast-paced environment and has strong skills in React Native, automated testing, and JavaScript. In this ...

Staff Backend Engineer, Procurement Platform (Relocation to Melbourne)

Airwallex is looking for a Staff Backend Engineer for their Procurement Suite based in London, UK. This full-time position requires a strong background in the financial domain and extensive experience with JVM based programming languages such as Java or Kotlin, along with familiarity with Spring and Spring Boot. ...

Senior SRE for Scaled SaaS — Reliability & Performance

Java Script Works is looking for a Senior Site Reliability Engineer to maintain and monitor production environments in the Greater London area. The ideal candidate will have extensive experience with SaaS production infrastructure, focusing on security, stability, and uptime. Responsibilities include reacting to ...

Senior React Native Mobile Engineer — FinTech

Java Script Works in Greater London is seeking an experienced Mobile Engineer to contribute to an exciting new product within a successful financial company. The ideal candidate is comfortable in a fast-paced environment and has strong skills in React Native, automated testing, and JavaScript. In this ...

Backend Engineer Monetization & Pricing Platforms

Miro is seeking a passionate Backend Engineer for its Monetization team in Greater London. This role involves designing and maintaining backend services that support pricing and monetization, requiring over 5 years of backend engineering experience, preferably with Java or Kotlin. The candidate will work on exci ...

Junior Frontend Engineer (React/Vue/Angular) — TDD Focus

Java Script Works is looking for a Junior Frontend Engineer to join their team in London. The role offers a salary range of £35,000 to £50,000. Candidates should be familiar with technologies such as React, TDD, Vue.js, and Angular. While the position is full-time, benefits and perks are not specified. This is a ...

Founding AI Engineer — Serverless & Data Driven Innovator

Java Script Works is seeking a Founding AI Engineer to join their team in London, United Kingdom. This full-time role will focus on developing serverless architectures and integrating APIs while utilizing expertise in JavaScript, Node.js, and other technologies. The company offers a competitive compens ...

Senior AI Agentic Automation Engineer – Remote

A tech company specializing in automated solutions is seeking a Senior Engineer to design and implement enterprise-grade AI systems. The role involves working on orchestration systems that leverage BPMN and AI components while ensuring operational excellence. Candidates should have over 5 years of experience wit ...

Senior Backend Engineer Fraud & Crypto Platforms

A leading crypto company in Greater London is looking for a Senior Back-End Engineer. This role involves developing scalable APIs and optimizing systems while ensuring security and performance. Candidates should have extensive experience with JVM languages like Java or Kotlin, and a customer-focused mindset. The ...

Trading Systems Engineer Asset Management (AM) London

A leading financial technology firm in the Greater London area is looking for an engineer to join the AM Trading Engineering team. This role involves full stack development with a focus on Java, participation in system design and support, and collaboration with traders and portfolio managers. The ideal candidate ...

Android Engineer Mobile Banking Apps (Hybrid, London)

A UK-licensed bank is seeking a skilled Android Engineer to join their dynamic Mobile team. This hybrid role involves developing and maintaining mobile banking applications to ensure a seamless and secure customer experience. Candidates should have experience in Android development using Kotlin or Java, a strong ...

Staff Backend Engineer — Remote, Impactful FinTech Systems

A leading UK bank is seeking a Staff Engineer to join their dynamic team. In this role, you will collaborate with various teams to enhance the backend of their innovative financial services. The ideal candidate will have experience with distributed systems and strong knowledge of programming languages like Go an ...

Senior Backend Engineer, Payroll Foundations Hybrid Equity

A tech company in the HR sector is seeking a Senior Backend Engineer to join their Payroll Foundations team. This role involves building and maintaining backend systems for payroll processing, ensuring accuracy and reliability. Candidates should have strong experience in backend systems, proficiency in Kotlin or ...

Backend Engineer, Core Technology

As a Backend Engineer on Stripe's Core Technology team, you'll build the financial infrastructure that powers the internet economy. You'll work on mission-critical payment systems, design resilient APIs, and collaborate with world-class engineers to scale Stripe's platform for millions of businesses global ...

Senior Java Developer (Low Latency Payments Systems)

Who We Are: We are a fast growing business and technology consultant company co-founded in 2019. We offer a custom-tailored, white-glove engineering service fit for our clients, because a digital transformation is more than just technology. With a successful track record of being a preferred ...

Senior Java Developer (Low Latency Payments Systems)

Who We Are: We are a fast growing business and technology consultant company co-founded in 2019. We offer a custom-tailored, white-glove engineering service fit for our clients, because a digital transformation is more than just technology. With a successful track record of being a preferred ...

Junior Java Full Stack Associate Consultant London

Junior Java Full Stack-Associate Consultant - London Reference Code: -en_GBContract Type:PermanentProfessional Communities: Strategy & TransformationROLE DETAILS SBU - Invent CU - Business Technology ...

Senior ML Software Architect for VFX Pipelines

This job is brought to you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board. Description Position at DNEG Senior ML Software Developer ML Technology The ML Technology department at Brahma DNEG-Dedicated Unit (Brahma ...

Senior ML Software Developer (Brahma AI A DNEG Dedicated Unit of Brahma)

Description Position at DNEG Senior ML Software DeveloperML TechnologyThe ML Technology department at Brahma DNEG-Dedicated Unit (Brahma DDU) explores, tests, and deploys machine-learning and automation solutions to support the technology and infrastructure that powers DNEG’s mul ...

Senior ML Software Developer (Brahma AI A DNEG Dedicated Unit of Brahma)

Description Position at DNEG Senior ML Software DeveloperML TechnologyThe ML Technology department at Brahma DNEG-Dedicated Unit (Brahma DDU) explores, tests, and deploys machine-learning and automation solutions to support the technology and infrastructure that powers DNEG’s mul ...

Senior Systems Engineer

Senior Systems Engineer£65.98 p/hr (Inside IR35)3-4 days on site - KT3 4LH12 monthsThe SMCS Senior Systems Engineer will be a key part of the Systems Team, tasked with developing the SMCS programmes. They will ensure the behaviour of the system is defined via requirements, assist ...

Engineering Manager, Android Frameworks

Engineering Manager, Android Frameworks _corporate_fare_ Google _place_ London, UK **Advanced** Experience owning outcomes and decision making, solving ambiguous problems and influencing stakeholders; deep expertise in domain. **Minimum qualifications:** + Bachelor's ...

Junior Generative AI Application Developer

For additional information, please review .Engineer the future of global finance. At Citi, our Tech team doesn't just support finance—we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI ...

Senior/Staff/Principal Engineer

Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. Our customers include the wor ...

Senior/Staff/Principal Engineer

Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. Our customers include the wor ...

Examiner International GCSE Computer Science (2017 Specification)

Examiner - International GCSE - Computer Science (2017 Specification) Reference: Ex/iGCSE/CS/2017spec An International GCSE Computer Science (2017 Specification) Examiner marks candidates’ responses in accordance with the pre-defined mark scheme, whilst adhering to conditions of recognition ...

Examiner International GCSE Computer Science (2017 Specification)

Examiner - International GCSE - Computer Science (2017 Specification) Reference: Ex/iGCSE/CS/2017spec An International GCSE Computer Science (2017 Specification) Examiner marks candidates’ responses in accordance with the pre-defined mark scheme, whilst adhering to conditions of recognition ...

Engineering Product Manager

Join to apply for the Engineering Product Manager role at The Audio Programmer . Remote position. Working from anywhere. Job Description We are looking for two highly experienced Product Managers with strong software engineering backgrounds to join a successful audio A ...

Software Engineering Manager Store Operations

What You’ll Do The Software Engineering Manager role is the embodiment of 'solving problems through technology' with key responsibilities as follows: Team Management: Build, mentor, and manage a high-performing software engineering team. Foster a culture of collaboration, innovation, a ...

Software Engineering Manager Store Operations

What You’ll Do The Software Engineering Manager role is the embodiment of 'solving problems through technology' with key responsibilities as follows: Team Management: Build, mentor, and manage a high-performing software engineering team. Foster a culture of collaboration, innovation, a ...

Guidewire Claim Center Developer

 JOB DETAILSRole Title: Guidewire CC Lead DeveloperPossibility of remote work: Hybrid | 3 days in the office/ weekContract duration: 6 MonthsLocation: LondonRequired Core Skills:• Strong working experience Guidewire ClaimCenter• Java and Gosu• Insurance P& ...

Guidewire Claim Center Developer

 JOB DETAILSRole Title: Guidewire CC Lead DeveloperPossibility of remote work: Hybrid | 3 days in the office/ weekContract duration: 6 MonthsLocation: LondonRequired Core Skills:• Strong working experience Guidewire ClaimCenter• Java and Gosu• Insurance P& ...

Senior Lead React Engineer – Frontend for Trading Tech

A leading global financial services firm in London seeks a Senior Lead Software Engineer to join an agile team focused on enhancing and delivering top-notch technology products. The successful candidate will have 5+ years of experience, excel in software engineering concepts, and bring practical cloud-native exp ...

Senior Lead React Engineer – Frontend for Trading Tech

A leading global financial services firm in London seeks a Senior Lead Software Engineer to join an agile team focused on enhancing and delivering top-notch technology products. The successful candidate will have 5+ years of experience, excel in software engineering concepts, and bring practical cloud-native exp ...

Principal Full Stack Engineer — Lead Cloud Native Solutions

A tech company in London is seeking a Principal Full Stack Software Engineer to lead the design, development, and delivery of modern, scalable applications. This senior role involves shaping technical direction, mentoring engineers, and implementing best practices across the software development lifecycle. Ideal ...

Senior Native Systems Engineer: OS Networking & Go

Secure Code Warrior is looking for a Senior Engineer to take ownership of core product development across Windows and macOS. You will lead the architectural vision for native applications and high-performance networking. Ideal candidates have extensive experience in systems programming, especially with Go, Swift ...

Head of Quantum Engineering

A growing technology startup in the Greater London area seeks a Lead Engineer to design and build high-performance, cloud-native services that support quantum and quantum-inspired applications. The ideal candidate will have 7+ years of software engineering experience, a proven background in software architecture ...

Senior Backend Engineer — Payments & API Platform

A dynamic payments technology company based in Greater London seeks a Senior Software Engineer to lead the design and evolution of their B2B API and payments infrastructure. The role requires at least 8 years of experience in software engineering, particularly in financial services or eCommerce payments. Ideal c ...

Site Reliability Engineer, Region Services

Would you like to help implement innovative cloud computing solutions and solve the most complex technical problems? Are you excited by the prospect of building and running the world's largest cloud computing infrastructure to provide a better world for future generations?Amazon Web Services (AWS) buil ...

System Development Engineer, ToolBelt Builder Tools, Operator Tools, UXP2 and Cutlass.

Would you like to help implement innovative cloud computing solutions and solve the most complex technical problems? Are you excited by the prospect of building and running the world's largest cloud computing infrastructure to provide a better world for future generations?Amazon Web Services (AWS) buil ...

Site Reliability Engineer, Region Services

Would you like to help implement innovative cloud computing solutions and solve the most complex technical problems? Are you excited by the prospect of building and running the world's largest cloud computing infrastructure to provide a better world for future generations?Amazon Web Services (AWS) buil ...

System Development Engineer, ToolBelt Builder Tools, Operator Tools, UXP2 and Cutlass.

Would you like to help implement innovative cloud computing solutions and solve the most complex technical problems? Are you excited by the prospect of building and running the world's largest cloud computing infrastructure to provide a better world for future generations?Amazon Web Services (AWS) buil ...

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    Lead Software Engineer Python Java Jobs in London Job Search Guide, Trends and Insights