Backend Developer jobs in London hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $213,465/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.
gsacapital.com · HQ: London, United Kingdom · Hedge Funds & Alternative Investments · 201-500 employees · Est. 2005 · Trust A · Hiring 9
HQ: London, United Kingdom · Hedge Funds & Alternative Investments · 201-500 employees · Est. 2005 · Trust A · Hiring 9
GSA Capital Partners is a quantitative hedge fund and systematic trading firm. It runs market-neutral and other systematic strategies in global equities, futures and other liquid markets, relying on statistical research, technology and automated execution. GSA was founded in 2005 by a team of quantitative traders from Deutsche Bank and is headquartered in London, with an additional office in New York.
Any business – from travel startups to financial enterprises - can build with Duffel to search and book flights, stays, add ancillaries, charge customers, manage orders and more.
sequencehq.com · HQ: London, United Kingdom · Startup · Trust B · Hiring 8
HQ: London, United Kingdom · Startup · Trust B · Hiring 8
Sequence automates billing for every custom contract. Get a complete platform for Finance teams to unlock error-free revenue collection at scale. For software companies with custom contracts and hybrid pricing.
seccl.tech · HQ: Bath, United Kingdom · Custody & Fund Administration · Financial Software & Embedded Finance · 51-200 employees · Est. 2016 · Startup · Hiring 12, 5 new
HQ: Bath, United Kingdom · Custody & Fund Administration · Financial Software & Embedded Finance · 51-200 employees · Est. 2016 · Startup · Hiring 12, 5 new
Seccl is a Bath company founded in 2016 that supplies custody and trading technology to financial advisers and wealth managers. Its cloud platform lets firms run their own investment proposition instead of relying on legacy platforms. The company is owned by Octopus Group and serves a growing share of British advice firms.
zalos.ai · HQ: San Francisco, United States · Accounting & Tax Software · AI Agents · 11-50 employees · Startup · Hiring 1
HQ: San Francisco, United States · Accounting & Tax Software · AI Agents · 11-50 employees · Startup · Hiring 1
Zalos is a software company that builds AI workforces to run finance workflows across fragmented systems. Its computer agents log into a customer's ERP, map the processes, automate them and improve over time, and the company hires founding full stack engineers. The company is headquartered in San Francisco, United States.
beyondsports.nl · London · Budapest · Alkmaar · Melbourne · Sports Analytics · Fan Engagement · 51-200 employees · Trust B · Hiring 29, 3 new
London · Budapest · Alkmaar · Melbourne · Sports Analytics · Fan Engagement · 51-200 employees · Trust B · Hiring 29, 3 new
Beyond Sports is a data visualization company operating at the intersection of sports, technology, and immersive storytelling. The company helps sports rightsholders create innovative experiences that resonate with the next generation of sports fans through the power of data.
seamflow.com · HQ: London, United Kingdom · Manufacturing & Industrial Software · Testing, Inspection & Certification · 1-10 employees · Est. 2025 · Startup · Trust B · Hiring 7
HQ: London, United Kingdom · Manufacturing & Industrial Software · Testing, Inspection & Certification · 1-10 employees · Est. 2025 · Startup · Trust B · Hiring 7
Seamflow is the AI-native operating system for testing, inspection, and certification (TIC) organizations. Automate MDR technical file reviews, notified body workflows, and certification processes — turning months into hours.
capitalontap.com · HQ: London, United Kingdom · Procurement & Spend Management · Business & SME Lending · Cards & Card Issuing · Est. 2012 · Startup · Trust B · Hiring 29, 2 new
HQ: London, United Kingdom · Procurement & Spend Management · Business & SME Lending · Cards & Card Issuing · Est. 2012 · Startup · Trust B · Hiring 29, 2 new
Capital on Tap is a financial technology company headquartered in London, United Kingdom, and was founded in 2012. The company provides business credit cards and spend management platforms specifically designed for small and medium-sized enterprises, offering features such as uncapped cashback, high-yield savings accounts, and integration with accounting software. It operates primarily in the United Kingdom and the United States, serving over 350,000 business customers and processing more than 40 billion pounds in transactions to date.
≈ $55k – $127k per year (Estimated) · Junior · 2+ years exp · In office (London, United Kingdom, New York, United States) · Bachelor's Degree · Full-Time · Junior
valarian.com · HQ: London, United Kingdom · AI Governance & Compliance · 51-200 employees · Est. 2020 · Startup · Trust A · Hiring 13, 1 new
HQ: London, United Kingdom · AI Governance & Compliance · 51-200 employees · Est. 2020 · Startup · Trust A · Hiring 13, 1 new
Valarian gives organisations the control architecture required for high-consequence operations and increasingly capable systems. Built in Britain by operators who have seen what breaks.
man.com · HQ: London, United Kingdom · Asset Management & Funds · Hedge Funds & Alternative Investments · 501-1000 employees · Est. 1783 · Trust B · Hiring 61, 5 new
HQ: London, United Kingdom · Asset Management & Funds · Hedge Funds & Alternative Investments · 501-1000 employees · Est. 1783 · Trust B · Hiring 61, 5 new
Man Group is a global alternative investment management firm headquartered in London that runs systematic, discretionary and multi-manager strategies for pension funds, sovereign wealth funds and other institutional clients. The firm traces its origins to a sugar brokerage founded in 1783, is listed on the London Stock Exchange and operates investment engines including Man AHL, Man Numeric and Man GLG, with offices in New York, Boston, Hong Kong, Tokyo and several European cities. Hiring spans quantitative researchers, software and data engineers, portfolio and risk specialists, institutional sales staff and corporate functions.
Transform electronics design with AI-powered automation. Generate schematics & BOMs in 60 seconds. Trusted by leading engineering teams to accelerate product development.
pear.vc · HQ: San Francisco, United States · Venture Capital · 51-200 employees · Est. 2013 · Trust C · Hiring 99, 6 new
HQ: San Francisco, United States · Venture Capital · 51-200 employees · Est. 2013 · Trust C · Hiring 99, 6 new
Pear VC is a venture capital firm specializing in pre-seed and seed-stage investments in startups. Founded by Pejman Nozad and Mar Hershenson, the firm provides hands-on support in areas such as product development, recruiting, fundraising, and go-to-market strategy. Pear has backed companies including DoorDash, Gusto, Aurora Solar, Vanta, and Guardant Health.
fonoa.com · HQ: Dublin, Ireland · Accounting & Tax Software · 51-200 employees · Est. 2019 · Startup · Trust B · Hiring 18, 1 new
HQ: Dublin, Ireland · Accounting & Tax Software · 51-200 employees · Est. 2019 · Startup · Trust B · Hiring 18, 1 new
Fonoa is a tax technology company founded in 2019 and headquartered in Dublin. Its platform automates indirect tax determination and reporting for digital businesses. The service is used by global marketplaces and platforms.
waggel.co.uk · HQ: London, United Kingdom · Pet Food, Supplies & Care · Property & Casualty Insurance · 51-200 employees · Est. 2017 · Likely startup · Hiring 2
HQ: London, United Kingdom · Pet Food, Supplies & Care · Property & Casualty Insurance · 51-200 employees · Est. 2017 · Likely startup · Hiring 2
Choose Waggel's comprehensive lifetime pet insurance with dental care, 24/7 video vet calls, flexible coverage and a dedicated claims team. Get a quote today!
decagon.ai · HQ: San Francisco, United States · Customer Support & Help Desk Software · AI Agents · Conversational AI · 501-1000 employees · Est. 2023 · Startup · Trust B · Hiring 128, 1 new
HQ: San Francisco, United States · Customer Support & Help Desk Software · AI Agents · Conversational AI · 501-1000 employees · Est. 2023 · Startup · Trust B · Hiring 128, 1 new
Decagon is a San Francisco company founded in 2023 that builds artificial intelligence support agents for consumer and business brands. Its agents resolve conversations end to end across chat, email and voice by taking actions in company systems, and admins configure behaviour through natural language operating procedures. It has grown quickly with customers in fintech, e-commerce and software.
harmonic.fun · HQ: Palo Alto, United States · AI for Science · Est. 2023 · Startup · Trust B · Hiring 8
HQ: Palo Alto, United States · AI for Science · Est. 2023 · Startup · Trust B · Hiring 8
Harmonic is a research laboratory building mathematical superintelligence with verifiable reasoning at its core. Its Aristotle system generates proofs in the Lean formal language so that every claim it makes can be checked mechanically rather than trusted, an approach aimed directly at eliminating hallucination in reasoning. The company was co-founded by the Robinhood founder Vlad Tenev and reached gold medal level performance on international mathematical olympiad problems; its long term aim is a system whose mathematical output requires no human verification.
