Senior Software Engineer

Company IconZaizi
Location IconWhitehall

We are seeking a Senior Full Stack & Systems Engineer to join our Defence delivery team. This is a versatile, high-impact role designed for funded client delivery: you will build mission-critical web applications and API backends for central Mo...Read More>>.

Posted: August 13th, 2026
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Software Engineer, International

Company IconApply
Location IconWhitehall

About Ramp Ramp is building the smart infrastructure for finance teams, embedded in the transaction flow of every dollar a business spends. We automate how over $200B in annualized spend flows in and out of 70,000+ companies: au...Read More>>.

Posted: September 20th, 2026
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Software Engineer, Infrastructure

Company IconHarmonic
Location IconWhitehall

About Harmonic At Harmonic, we are building a mathematical reasoning engine that operates with absolute precision. While most AI makes maximum-likelihood guesses, Harmonic's Aristotle uses Lean4 and reinforcement learning to verify its...Read More>>.

Posted: September 21st, 2026
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AI Software Engineer

Company IconHarrington Starr
Location IconWhitehall

I’m working with an early-stage start-up being built within an established asset management business, creating a new AI-enabled hedge fund.They’re keeping the team deliberately small and are looking for a strong Software Engineer to joi...Read More>>.

Posted: September 21st, 2026
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Java Software Engineer

Company IconMiller Maxwell
Location IconWhitehall

Software Engineer – Systematic Trading - Miller Maxwell is recruiting for an established proprietary trading firm running systematic, algorithmic strategies in futures markets globally. The firm builds its own low-latency trading infrastructu...Read More>>.

Posted: September 21st, 2026
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Staff Software Engineer

Company IconCoMind Technologies Limited.
Location IconWhitehall

At CoMind, we are developing a non-invasive neuromonitoring technology that will result in a new era of clinical brain monitoring. In joining us, you will be helping to create cutting-edge technologies that will improve how we diagnose and trea...Read More>>.

Posted: September 21st, 2026
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Principal Software Engineer

Company IconPalo Alto Networks
Location IconWhitehall

Our Mission At Palo Alto Networks®, we’re united by a shared mission—to protect our digital way of life. We thrive at the intersection of innovation and impact, solving real-world problems with cutting‑edge technology and bold t...Read More>>.

Posted: September 21st, 2026
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Java Software Engineer

Company IconBounteous
Location IconWhitehall

Bounteous is a global AI Services firm where agentic engineering and human experience converge to deliver transformative business outcomes for the enterprise. We help organizations design, build, and scale AI-driven products, platforms, and pro...Read More>>.

Posted: September 21st, 2026
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Software Engineer II

Company IconPhoenix Court Group
Location IconWhitehall

MOO brings brands to life in a sustainable way, with a range of remarkable print and merchandise products. We combine design, technology, manufacturing and service, so that people can connect in memorable ways. Not online but out there, in real...Read More>>.

Posted: September 21st, 2026
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Senior Software Engineer

Company IconThe Sun
Location IconWhitehall

Your Team: The Sun is one of the UK's strongest brands and, like all media organisations, is having to adapt rapidly to overcome the uncertainties of a fast-moving digital world. Our website The Sun is more than a newspaper. It is an i...Read More>>.

Posted: September 21st, 2026
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Senior Software Engineer

Company IconFinTop Consulting
Location IconWhitehall

Fintop Consulting has partnered with an AI Health-tech partner based in Central London who is looking to hire a Senior Backend Engineer, who is expertly skilled in Python, AWS and NoSQL databases. This is a very exciting opportunity to join a c...Read More>>.

Posted: September 21st, 2026
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Staff Software Engineer

Company IconFlock
Location IconWhitehall

Discover the leading companies hiring in tech right now Every season cord ranks companies hiring based on their popularity, growth and candidate experience. Surface every relevant position, direct message the people hiring an...Read More>>.

Posted: September 21st, 2026
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Staff Software Engineer

Company IconElyos AI
Location IconWhitehall

About Elyos AIWe’re building the next generation of customer service with AI Agents. Our agents answer calls, reply to emails and WhatsApp messages, make bookings, take payments, and operate the CRM in the same way a human would....Read More>>.

Posted: September 21st, 2026
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Senior Software Engineer

Company IconTech Talent Partners
Location IconWhitehall

(Python, NodeJS or TypeScript, with React and ideally some AI engineering) Summary This is an exciting team of smart and kind engineers -- and they index for both when hiring. They’re looking for a Senior Software Engineer who...Read More>>.

Posted: September 21st, 2026
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Lead Software Engineer

Company IconSignify Technology
Location IconWhitehall

Overview🚀 Lead Software Engineer - Performance, Scalability & Reliability (AWS) |We’re on the lookout for a hands-on Lead Software Engineer to take ownership of non-functional requirements for one of ou...Read More>>.

Posted: September 21st, 2026
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Senior Software Engineer

Company IconSlope
Location IconWhitehall

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century’s most innovative com...Read More>>.

Posted: September 21st, 2026
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Software Engineer IRC303861

Company IconGlobalLogic
Location IconWhitehall

Working in a permanent feature team, you’ll be developing knowledge of aspects of the associated platform across the disciplines of business, applications, data and infrastructure. You’ll also be liaising with principal engineers, architect...Read More>>.

Posted: September 21st, 2026
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Senior Software Engineer

Company IconKi
Location IconWhitehall

Who are we? Look at the latest headlines and you will see something Ki insures. Think space shuttles, world tours, wind farms, and even footballers' legs. Ki's mission is simple. Digitally disrupt and revolutionise a 335-year-old...Read More>>.

Posted: September 21st, 2026
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Software Engineer - London

Company IconZopa Bank
Location IconWhitehall

Join to apply for the Software Engineer role at Zopa BankJoin to apply for the Software Engineer role at Zopa BankHello there. We’re Zopa....Read More>>.

Posted: September 21st, 2026
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Senior Software Engineer

Company IconTroi
Location IconWhitehall

Senior Full Stack Engineer (React, Typescript, Node, AWS)HealthTech, up to £90kLondon (once or twice per fortnight in office)Troi Search are delighted to be partnering once again with this innovative & mission drive...Read More>>.

Posted: September 21st, 2026
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Software Engineer - Tooling

Company IconIconic Interactive
Location IconWhitehall

This is a hybrid role (3 days per week) based out of London. Iconic Interactive is an AI-native game development and research studio exploring the future of interactive entertainment, digital actors, and intelligent worlds. We are lookin...Read More>>.

Posted: September 21st, 2026
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Intermediate Software Engineer

Company IconRX Global
Location IconWhitehall

Are you passionate about building reliable, secure, and scalable software that delivers meaningful outcomes for customers and the business? Do you enjoy collaborating with a talented engineering team, solving technical challenges, and continuou...Read More>>.

Posted: September 21st, 2026
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Senior Software Engineer

Company IconOpulent Mind
Location IconWhitehall

Build the engine room of a payments platform that actually understands money. Most payments companies are wrappers. Money goes in, money comes out, and nobody can tell you why a particular merchant got paid the amount they did, against w...Read More>>.

Posted: September 21st, 2026
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Frontend Software Engineer

Company IconTransitionZero
Location IconWhitehall

About Us About the Role We are looking for a Frontend Engineer to join our interface team and help shape the future of Scenario Builder. This is an opportunity to work on a modern, greenfield frontend codebase built fro...Read More>>.

Posted: September 21st, 2026
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Senior Software Engineer

Company IconLoop Recruitment
Location IconWhitehall

React.js | TypeScript | Next.js | Product & AI-Focused We're partnering with an ambitious fintech scale-up entering a major growth phase as it expands its product offering and invests heavily in technology, AI, and customer expe...Read More>>.

Posted: September 21st, 2026
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Lead Software Engineer

Company IconThe Depository Trust & Clearing Corporation (DTCC)
Location IconWhitehall

Are you ready to make an impact at DTCC? Do you want to work on innovative projects, collaborate with a dynamic and supportive team, and receive investment in your professional development? At DTCC, we are at the forefront of innovation in the...Read More>>.

Posted: September 21st, 2026
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Research Software Engineer

Company IconMistral AI
Location IconWhitehall

About Mistral Mistral provides full-stack AI solutions: from frontier models to developer tools, applications, and compute. We partner with enterprises tackling the hardest problems—across high-stakes industries like finance, manufac...Read More>>.

Posted: September 21st, 2026
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Senior Software Engineer

Company IconBauer Media Outdoor UK
Location IconWhitehall

About Us Bauer Media is a leading media business reaching millions of people across Europe through audio, digital, and out of home advertising. We’re behind well known brands including Kiss, Absolute, Magic, Grazia, and Empire....Read More>>.

Posted: September 21st, 2026
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Senior Software Engineer

Company IconExperis UK
Location IconWhitehall

About the RoleSenior Software Engineer — AI & Multimodal Data PlatformsWe are seeking an experienced Senior Software Engineer to help design and build next-generation AI systems used in Defence, Security, and Resilience enviro...Read More>>.

Posted: September 21st, 2026
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Lead Software Engineer

Company IconFranklin Bates
Location IconWhitehall

Technical Architect / Principal Engineer London (hybrid) 90k to 105k We’re partnering with an ambitious London‑based payments start‑up looking to hire a hands‑on Technical Architect / Principal Engineer...Read More>>.

Posted: September 21st, 2026
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Software Engineer - DevOps

Company IconQuest Global
Location IconWhitehall

Job Requirements At Quest Global, it’s not just what we do but how and why we do it that makes us different. With over 25 years as an engineering services provider, we believe in the power of doing things differently to make the impo...Read More>>.

Posted: September 21st, 2026
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Software Engineer (Agentic)

Company IconOho Group
Location IconWhitehall

Software Engineer | Agentic AI | LondonCompetitive Salary + Equity + Outstanding BenefitsLarge language models are changing what software can do. We're partnering with a well-funded technology company building AI agents that can...Read More>>.

Posted: September 21st, 2026
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Java Software Engineer

Company IconAlexander Ash Consulting
Location IconWhitehall

Our banking client is looking for an experienced Java / Spring Boot Engineer to join a high-performing technology team, working on the development and enhancement of critical banking applications and services.The successful candid...Read More>>.

Posted: September 21st, 2026
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React Software Engineer

Company IconVenn Apps
Location IconWhitehall

In the world of e-commerce, your brand identity is your most valuable asset. At Venn Apps, we build powerful e-commerce technology for Shopify merchants through our Software-as-a-Service platform. Our products and apps bring brands to life and...Read More>>.

Posted: September 21st, 2026
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Lead Software Engineer

Company IconHarrington Starr
Location IconWhitehall

Harrington Starr has partnered with an innovative Investment Platform Company that specialise in developing unique software systems for clients for invest into Capital Markets from Pensions, Investments and Fund Management.This is an exc...Read More>>.

Posted: September 21st, 2026
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Software Engineer (Java)

Company IconDolarApp
Location IconWhitehall

About ARQ ARQ is one of the fastest-growing fintechs in the world. Our mission is to redefine how people interact with money across borders, building the infrastructure to move value seamlessly. We’re still early in our journe...Read More>>.

Posted: September 21st, 2026
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Python Software Engineer

Company IconFundment Limited
Location IconWhitehall

Fundment is a fast-growing wealth infrastructure company transforming the £3 trillion UK wealth management industry. Our modern investment platform is becoming the platform of choice for financial advisers and their clients. We’re building h...Read More>>.

Posted: September 21st, 2026
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C++ Software Engineer

Company IconBarlowe LLP
Location IconWhitehall

We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity. From our London HQ, we unite world‑class researchers and engineers in an environment that values deep exploration and methodi...Read More>>.

Posted: September 21st, 2026
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Golang Software Engineer

Company IconProvntalent
Location IconWhitehall

Provn are partnered with a leading digital assets technology company looking to hire a Golang Developer to join their trading engineering team.This is an opportunity to build the backend infrastructure that powers institutional digital asset tr...Read More>>.

Posted: September 21st, 2026
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Principal Software Engineer

Company IconWebuild Ai
Location IconWhitehall

About WeBuild-AI: WeBuild-AI areAInatives delivering 10x value for enterprise organisations. We combine highly skilled experts with ourAI Launchpad, industry-aligned language models, and agents to tra...Read More>>.

Posted: September 21st, 2026
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Software Engineer (Backend)

Company IconExTrac
Location IconWhitehall

About ExTrac ExTrac is a decision intelligence company used by governments, defence organisations, financial institutions, and corporates operating in complex, fast-moving environments. Our capabilities fuse curated data sources, domai...Read More>>.

Posted: September 21st, 2026
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Lead Software Engineer

Company IconSR2 | Socially Responsible Recruitment | Certified B Corporation™
Location IconWhitehall

I'm hiring! Lead Software Engineer | Java | AWS | AI | System Architecture | Kafka | 2 days a week in London| £80,000 - £100,000 + BenefitsThis is a brilliant role for a Senior looking to take a step up!Love leading eng...Read More>>.

Posted: September 21st, 2026
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Senior Software Engineer

Company IconActeon
Location IconWokingham

UTEC, Acteon’s Geo-services business line, harnesses data to optimize designs, save time, and maximize your project’s economic value by providing a holistic understanding of the marine environment. Our insights underpin customers’ decisio...Read More>>.

Posted: September 22nd, 2026
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iOS Software Engineer

Company IconApple Technical Recruitment
Location IconWhitehall

iOS Software EngineerPeople at Apple don't just build products — they craft the kind of experience that has revolutionized entire industries. The diverse collection of our people and their ideas inspire innovation in everything we do. I...Read More>>.

Posted: September 22nd, 2026
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Senior Software Engineer

Company IconPlatformed
Location IconWhitehall

This is a great opportunity for an experienced full stack engineer to join our growing engineering team. You'll report to the CTO and work alongside the founders and the rest of our small engineering team.RoleYou'll build a...Read More>>.

Posted: September 22nd, 2026
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Systems Software Engineer

Company IconIC Resources
Location IconWhitehall

Join an innovative AI hardware start-up | UK RemoteThis exciting start-up is developing a fundamentally new approach to AI infrastructure, building hardware capable of accessing and traversing large-scale knowledge structures at m...Read More>>.

Posted: September 22nd, 2026
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Senior Software Engineer

Company IconInvesta
Location IconWhitehall

Office Location: Temple, London - hybrid working environment (3 days in office per week)About InvestaInvesta is building the UK’s first zero-commission Options and Stocks trading platform. Legacy platforms typically fea...Read More>>.

Posted: September 23rd, 2026
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Senior Software Engineer

Company IconeasyJet Airline Company PLC
Location IconWhitehall

Job Description - Senior Software Engineer (17311) Job Description Senior Software Engineer ( 17311 ) Description Senior Software Engineer Luton | Full-time | Hybrid We support hybrid working, an...Read More>>.

Posted: September 24th, 2026
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Software Engineer, Backend

Company IconAdaptyv
Location IconWhitehall

Adaptyv is building an automated lab that lets AI agents run biology experiments.We're entering the era of agentic science where AI models can now design novel proteins, propose hypotheses, and iterate on experimental results. But...Read More>>.

Posted: September 24th, 2026
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Senior Software Engineer

Company IconGlobalLogic
Location IconWhitehall

We are GlobalLogic, a Hitachi Group Company and a leader in digital engineering. We help brands across the globe design and build innovative products, platforms, and digital experiences for the modern world. By integrating experience design, co...Read More>>.

Posted: September 24th, 2026
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