Backend Developer jobs in United Kingdom hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $170,197/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.
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9,088 remote jobs are open to candidates in United Kingdom.Show remote jobs
lmax.com · HQ: London, United Kingdom · Forex & CFD Brokers · Online Brokerage & Trading Platforms · 51-200 employees · Est. 2010 · Hiring 5, 1 new
HQ: London, United Kingdom · Forex & CFD Brokers · Online Brokerage & Trading Platforms · 51-200 employees · Est. 2010 · Hiring 5, 1 new
LMAX Group is a London trading technology company founded in 2010 that operates institutional exchanges for foreign exchange and digital assets. Its matching engine is known for deterministic low-latency execution and gave rise to the widely used Disruptor open source library. The company runs venues in London, New York, Tokyo and Singapore.
aalyria.com · HQ: Livermore, United States · Telecom Infrastructure · 201-500 employees · Startup · Trust A · Hiring 31
HQ: Livermore, United States · Telecom Infrastructure · 201-500 employees · Startup · Trust A · Hiring 31
Aalyria is a US technology company headquartered in Livermore, California that supplies laser communications hardware and software-defined networking platforms for networks in motion across land, sea, air and space. Built on technology acquired from Google, its Spacetime platform orchestrates satellite, airborne and terrestrial mesh networks and its Tightbeam product provides free-space optical links for commercial and government customers. It hires software engineers for backend, infrastructure, simulation and optimization systems, research scientists and related technical staff in California, Washington and London.
sega.com · HQ: Tokyo, Japan · PC Games · Console Games · 1001-5000 employees · Est. 1960 · Hiring 12, 1 new
HQ: Tokyo, Japan · PC Games · Console Games · 1001-5000 employees · Est. 1960 · Hiring 12, 1 new
SEGA is a Tokyo game company founded in 1960 that made arcade machines and home consoles before becoming a software publisher. It develops the Sonic, Yakuza and Persona franchises and owns studios in Japan and Europe including Atlus and Creative Assembly. The company continues to operate arcade and amusement machine businesses in Japan.
mastercard.com · HQ: Purchase, United States · Payment Processing & Gateways · Cards & Card Issuing · 5000+ employees · Est. 1966 · Trust A · Hiring 806, 56 new
HQ: Purchase, United States · Payment Processing & Gateways · Cards & Card Issuing · 5000+ employees · Est. 1966 · Trust A · Hiring 806, 56 new
Mastercard is an American payments technology company whose origins date to 1966, when a group of banks formed the Interbank Card Association to compete with BankAmericard. Like its main rival it does not issue cards or extend credit; it operates the network that authorises, clears and settles transactions between issuing banks, acquirers and merchants in more than two hundred countries. Headquartered in Purchase, New York, the company has built a large services business alongside the core network, covering fraud and identity products through its Ethoca and RiskRecon acquisitions, open banking, consulting and loyalty programmes.
anthropic.com · HQ: San Francisco, United States · Code Intelligence · AI Research Labs · AI Safety & Alignment · Foundation Models · LLM & Generative AI · 1001-5000 employees · Est. 2021 · Trust B · Hiring 678, 53 new
HQ: San Francisco, United States · Code Intelligence · AI Research Labs · AI Safety & Alignment · Foundation Models · LLM & Generative AI · 1001-5000 employees · Est. 2021 · Trust B · Hiring 678, 53 new
Anthropic is an American artificial intelligence safety and research company founded in 2021 by former OpenAI researchers, among them the siblings Dario and Daniela Amodei. It develops the Claude family of large language models and ships them through a consumer assistant, an enterprise developer platform and the Claude Code agentic coding tool, alongside open standards such as the Model Context Protocol. Incorporated as a public benefit corporation and headquartered in San Francisco, the company concentrates on interpretability, alignment and reliability research and counts Google and Amazon among its largest investors.
cummins.com · HQ: Columbus, United States · Automotive Components · Industrial Machinery · 1001-5000 employees · Est. 1919 · Trust B · Hiring 884, 88 new
HQ: Columbus, United States · Automotive Components · Industrial Machinery · 1001-5000 employees · Est. 1919 · Trust B · Hiring 884, 88 new
Cummins is an American multinational manufacturer headquartered in Columbus, Indiana, that designs, builds, distributes and services diesel and natural gas engines, power generation systems, filtration, aftertreatment and electrified powertrain components. Founded in 1919 and listed on the New York Stock Exchange, it runs plants, technical centres and service networks across North America, the United Kingdom, India, Mexico, Australia, South Africa and other markets. Its hiring spans field service and diesel technicians, manufacturing and controls engineers, aftertreatment engineering placement students, supply chain coordinators, finance, HR and AI and cloud engineers.
enthuse.com · London · Nonprofit, Church & Membership Software · Nonprofits & Foundations · Est. 2012 · Hiring 5
London · Nonprofit, Church & Membership Software · Nonprofits & Foundations · Est. 2012 · Hiring 5
Enthuse is transforming digital fundraising by putting charities first. Enthuse is a donations, event registration and fundraising platform that has helped thousands of charities raise millions. Our solutions are customised under a cause’s own brand and we put charities in control of their data. This allows charities to build and nurture a loyal supporter base, raise more and ultimately have more impact. Founded in 2012 and headquartered in London, Enthuse is backed by socially responsible investors and was named “Most Committed Company to the Sector” at the National Fundraising Awards. See our careers page: https://enthuse.com/careers
jainglobal.com · HQ: New York, United States · Hedge Funds & Alternative Investments · 201-500 employees · Est. 2024 · Trust B · Hiring 30
HQ: New York, United States · Hedge Funds & Alternative Investments · 201-500 employees · Est. 2024 · Trust B · Hiring 30
Jain Global is a global multi-strategy hedge fund and investment management firm. It runs an integrated structure of several investment businesses covering fundamental equities, macro, credit, commodities and quantitative strategies, seeking returns uncorrelated with broad markets. Jain Global was founded by Bobby Jain, formerly co-chief investment officer of Millennium Management, and launched in 2024 as one of the largest hedge fund debuts on record.
double11.com · Middlesbrough · Kuala Lumpur · PC Games · Game Development · 201-500 employees · Hiring 4
Middlesbrough · Kuala Lumpur · PC Games · Game Development · 201-500 employees · Hiring 4
Changing the way people make games, together. Double Eleven is a company that puts its people at its core and isn’t afraid to go in their own direction. Be part of the evolution.
synack.net · Washington · Chicago · New York · Dubai · London · Vulnerability Management · Penetration Testing · Trust A · Hiring 8
Washington · Chicago · New York · Dubai · London · Vulnerability Management · Penetration Testing · Trust A · Hiring 8
Synack provides penetration testing as a service through a platform and a vetted community of security researchers, delivering continuous testing and vulnerability management. It discovers new assets and tests for critical vulnerabilities across customers' attack surfaces, and hires regional sales directors and software engineers. The company is based in the United States.
gradient-labs.ai · HQ: London, United Kingdom · AI Agents · Financial Software & Embedded Finance · Financial AI · 51-200 employees · Est. 2023 · Startup · Hiring 6, 1 new
HQ: London, United Kingdom · AI Agents · Financial Software & Embedded Finance · Financial AI · 51-200 employees · Est. 2023 · Startup · Hiring 6, 1 new
Gradient Labs builds AI agents for financial services. Automate disputes, KYC, lending, customer support, and the back-office work in between. Book a demo.
thanksben.com · HQ: London, United Kingdom · Health Insurance & Benefits · Human Resources · 11-50 employees · Est. 2019 · Startup · Hiring 4, 1 new
HQ: London, United Kingdom · Health Insurance & Benefits · Human Resources · 11-50 employees · Est. 2019 · Startup · Hiring 4, 1 new
Ben is a London employee benefits company founded in 2019 that gives staff a flexible allowance on a payment card. Its platform lets employees choose how to spend benefit budgets while the employer keeps reporting and tax handling automated. The company serves international workforces where a single benefits package rarely fits everyone.
together.ai · HQ: San Francisco, United States · Foundation Models · Cloud Platforms (IaaS & PaaS) · AI Compute & Inference · 501-1000 employees · Est. 2022 · Startup · Trust A · Hiring 83, 3 new
HQ: San Francisco, United States · Foundation Models · Cloud Platforms (IaaS & PaaS) · AI Compute & Inference · 501-1000 employees · Est. 2022 · Startup · Trust A · Hiring 83, 3 new
Together AI (Together Computer, Inc.) is a full-stack AI infrastructure and cloud platform headquartered in San Francisco, California. Founded in 2022 by prominent AI researchers and system engineers - including CEO Vipul Ved Prakash, CTO Ce Zhang, Chief Scientist Tri Dao (co-creator of FlashAttention), Chris Ré, and Percy Liang - the company operates as an "AI Native Cloud" designed to train, fine-tune, and deploy open-source generative AI models at scale with high performance and optimized unit economics.
rocketsoftware.com · HQ: Waltham, United States · IT Consulting & Digital Transformation · Integration & API Management · 1001-5000 employees · Est. 1990 · Trust A · Hiring 46, 1 new
HQ: Waltham, United States · IT Consulting & Digital Transformation · Integration & API Management · 1001-5000 employees · Est. 1990 · Trust A · Hiring 46, 1 new
Rocket Software is an enterprise software company headquartered in Waltham, Massachusetts that builds tools to modernise, integrate and secure mainframe and other long-running business systems. Founded in 1990 and owned by Bain Capital since 2018, it grew through acquisitions including the application modernisation business of OpenText, and it serves banks, insurers, retailers and government agencies across North America, Europe and Asia. Open roles include software engineers, customer solutions and support engineers, strategic account executives, product managers and legal and corporate staff.
semble.io · HQ: London, United Kingdom · Practice Management Software · 11-50 employees · Est. 2016 · Startup · Hiring 7
HQ: London, United Kingdom · Practice Management Software · 11-50 employees · Est. 2016 · Startup · Hiring 7
Semble is a London health technology company founded in 2016 that provides cloud practice management software to private clinics. Its platform covers records, scheduling, billing and patient communication for practices that previously relied on desktop systems. The company serves clinics and specialists across the United Kingdom and beyond.
nanoporetech.com · HQ: Oxford, United Kingdom · Genomics & Genetic Testing · Laboratory Equipment · 1001-5000 employees · Est. 2005 · Trust A · Hiring 45, 2 new
HQ: Oxford, United Kingdom · Genomics & Genetic Testing · Laboratory Equipment · 1001-5000 employees · Est. 2005 · Trust A · Hiring 45, 2 new
Oxford Nanopore Technologies is an Oxford company founded in 2005 that sequences DNA by passing strands through protein nanopores. Its portable MinION device made real time sequencing possible outside laboratories, including during disease outbreaks. The company is listed in London and sells sequencing platforms to research and clinical customers worldwide.
modelml.com · HQ: London, United Kingdom · AI Agents · Financial AI · 51-200 employees · Est. 2023 · Startup · Hiring 12
HQ: London, United Kingdom · AI Agents · Financial AI · 51-200 employees · Est. 2023 · Startup · Hiring 12
Model ML is an AI-native workspace that works as a finance agent for investment banks, private equity firms, consultancies and asset managers. The product is already deployed in production at financial institutions, and the company hires for content, marketing, go-to-market, growth, operations and IT compliance roles. The company is headquartered in London, United Kingdom.
