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.
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sevenrooms.com • HQ: New York, United States • Artificial Intelligence • Customer & Retention Analytics • Hotels & Resorts • Scheduling & Booking Software • CRM Software • 51-200 employees • Est. 2011 • Trust A • Hiring 9, 1 new
HQ: New York, United States • Artificial Intelligence • Customer & Retention Analytics • Hotels & Resorts • Scheduling & Booking Software • CRM Software • 51-200 employees • Est. 2011 • Trust A • Hiring 9, 1 new
SevenRooms was founded on understanding the human side of customer interactions. Find out how we help hospitality brands create meaningful guest relationships.
oaknorth.com • HQ: London, United Kingdom • Financial Software & Embedded Finance • Commercial & Retail Banks • Business & SME Lending • 201-500 employees • Est. 2015 • Hiring 21, 7 new
HQ: London, United Kingdom • Financial Software & Embedded Finance • Commercial & Retail Banks • Business & SME Lending • 201-500 employees • Est. 2015 • Hiring 21, 7 new
OakNorth is a London bank founded in 2015 that lends to mid-sized businesses using its own credit analysis platform. Its ON Credit Intelligence software models borrower performance in granular sector detail and is licensed to banks in the United States and Europe. The company has lent billions of pounds while keeping loss rates unusually low for the segment.
perplexity.ai • HQ: San Francisco, United States • Foundation Models • LLM & Generative AI • Search Engines • AI Search • 1001-5000 employees • Est. 2022 • Trust B • Hiring 127, 8 new
HQ: San Francisco, United States • Foundation Models • LLM & Generative AI • Search Engines • AI Search • 1001-5000 employees • Est. 2022 • Trust B • Hiring 127, 8 new
Perplexity AI is an American company that builds an answer engine combining live web search with large language models to return sourced, conversational responses instead of a list of links. Its products span a consumer assistant on web and mobile, the Comet browser, enterprise search over internal documents and the Sonar developer API that exposes the same grounded retrieval stack. Founded in 2022 in San Francisco by former researchers and engineers from OpenAI, Meta and Databricks, the company is backed by NVIDIA, IVP, New Enterprise Associates and SoftBank.
$220k – $405k per year • Staff+ • 4+ years exp • In office (San Francisco, Seattle, New York, United States, London, United Kingdom, Toronto, Canada) • Full-Time • Staff
$220k – $405k per year • Staff+ • 4+ years exp • Hybrid (San Francisco, Austin, Seattle, New York, United States, London, United Kingdom) • Full-Time • Staff
tesco.com • HQ: Welwyn Garden City, United Kingdom • Retail & Shop Systems • Online Groceries • 5000+ employees • Est. 1919 • Trust A • Hiring 647, 238 new
HQ: Welwyn Garden City, United Kingdom • Retail & Shop Systems • Online Groceries • 5000+ employees • Est. 1919 • Trust A • Hiring 647, 238 new
Tesco is a leading British multinational retailer that stands as the largest grocery store chain in the United Kingdom. Headquartered in Welwyn Garden City, England, the company operates thousands of supermarkets, convenience stores, and a major e-commerce platform. It offers a wide variety of products ranging from fresh food and clothing to household items and financial services.
kaluza.com • HQ: London, United Kingdom • Billing & Subscription Management • Smart Grid • Energy Management • 51-200 employees • Est. 2019 • Startup • Trust B • Hiring 36, 6 new
HQ: London, United Kingdom • Billing & Subscription Management • Smart Grid • Energy Management • 51-200 employees • Est. 2019 • Startup • Trust B • Hiring 36, 6 new
Kaluza is a London energy software company that grew out of OVO Energy and became a separate business in 2019. Its platform runs retail energy billing and orchestrates flexible devices such as electric vehicles and heat pumps to shift demand. The company licenses the technology to energy retailers in Britain, Europe, Japan and Australia.
wise.com • HQ: London, United Kingdom • Currency Exchange & FX Payments • Money Transfer & Remittances • 1001-5000 employees • Est. 2011 • Trust B • Hiring 383, 83 new
HQ: London, United Kingdom • Currency Exchange & FX Payments • Money Transfer & Remittances • 1001-5000 employees • Est. 2011 • Trust B • Hiring 383, 83 new
Wise is a British financial technology company founded in 2011 by two Estonians who were frustrated by the cost of moving money between pounds and euros. It built a network of local bank accounts in each market so that most transfers never cross a border, publishes the mid-market exchange rate with an explicit fee, and has extended the model into multi-currency accounts, debit cards, business payments and an infrastructure product that banks resell. The company listed directly on the London Stock Exchange in 2021 and moves tens of billions of pounds for millions of personal and business customers each quarter.
version1.com • HQ: Dublin, Ireland • Managed IT Services (MSP) • Enterprise Apps Implementation Partners • IT Consulting & Digital Transformation • 1001-5000 employees • Est. 1996 • IT services • Trust B • Hiring 129, 13 new
HQ: Dublin, Ireland • Managed IT Services (MSP) • Enterprise Apps Implementation Partners • IT Consulting & Digital Transformation • 1001-5000 employees • Est. 1996 • IT services • Trust B • Hiring 129, 13 new
Version 1 is an Irish technology services company founded in Dublin in 1996 that delivers digital transformation, enterprise applications and managed services to public sector bodies and large private organisations. Its practices cover cloud migration on the major hyperscalers, Oracle and Microsoft enterprise applications, custom software engineering, data and artificial intelligence, and infrastructure managed services, with much of its revenue coming from British and Irish government contracts. The company is headquartered in Dublin, employs several thousand people across Ireland, the United Kingdom, India and North America, and is majority owned by Partners Group.
moonpig.com • HQ: London, United Kingdom • E-commerce Platforms • Gifts, Party Supplies & Souvenirs • 51-200 employees • Est. 2000 • Hiring 13, 2 new
HQ: London, United Kingdom • E-commerce Platforms • Gifts, Party Supplies & Souvenirs • 51-200 employees • Est. 2000 • Hiring 13, 2 new
Moonpig is a London company founded in 2000 that sells personalised greeting cards and gifts online. Its technology handles mass customisation, print production and reminder driven repeat purchasing at very high volumes. The company is listed in London and also owns the Dutch business Greetz.
echobox.com • HQ: London, United Kingdom • Artificial Intelligence • Data & Analytics • Media & Entertainment • Digital Media • Social Media Marketing • 201-500 employees • Startup • Hiring 3, 3 new
HQ: London, United Kingdom • Artificial Intelligence • Data & Analytics • Media & Entertainment • Digital Media • Social Media Marketing • 201-500 employees • Startup • Hiring 3, 3 new
Unify social publishing, newsletters, realtime analytics, benchmarking, reporting and creative production in one AI-powered platform built for publishers.
moneyhub.com • HQ: Bristol, United Kingdom • Investing Apps & Robo-Advisors • Financial Software & Embedded Finance • Est. 2014 • Hiring 2, 1 new
HQ: Bristol, United Kingdom • Investing Apps & Robo-Advisors • Financial Software & Embedded Finance • Est. 2014 • Hiring 2, 1 new
Moneyhub is a Bristol company founded in 2014 that provides open finance data and payment infrastructure. Its platform aggregates accounts, pensions and investments so banks, insurers and advisers can give customers a complete financial picture. The company sells its technology to institutions rather than competing for consumers directly.
galaxy.com • HQ: New York, United States • Data Centers & Colocation • Mining & Staking • Investment Banking & M&A Advisory • Hedge Funds & Alternative Investments • Asset Management & Funds • 501-1000 employees • Est. 2018 • NASDAQ: GLXY • Trust A • Hiring 33, 4 new
HQ: New York, United States • Data Centers & Colocation • Mining & Staking • Investment Banking & M&A Advisory • Hedge Funds & Alternative Investments • Asset Management & Funds • 501-1000 employees • Est. 2018 • NASDAQ: GLXY • Trust A • Hiring 33, 4 new
Galaxy Digital is a financial services and investment management firm specializing in digital assets, cryptocurrency, and blockchain technology. Founded by Michael Novogratz, the company serves as a bridge between traditional finance and the crypto ecosystem through institutional trading, asset management, investment banking, and mining operations. Additionally, it has expanded into digital infrastructure, providing data center capabilities to support high-performance computing, artificial intelligence, and decentralized networks.
scrumconnect.com • HQ: Staines-upon-Thames, United Kingdom • Education • E-learning • Professional Services • Travel & Tourism • 51-200 employees • Est. 2011 • Trust B • Hiring 111, 14 new
HQ: Staines-upon-Thames, United Kingdom • Education • E-learning • Professional Services • Travel & Tourism • 51-200 employees • Est. 2011 • Trust B • Hiring 111, 14 new
Headquartered in Staines-upon-Thames, United Kingdom, Scrumconnect Consulting is a leading digital transformation and software engineering consultancy founded in 2011. The firm specializes in user-centred service design, agile delivery management, cloud architecture, and custom software development, working extensively with major UK public sector departments and commercial enterprises. By deploying multidisciplinary agile teams, it helps organizations modernize complex legacy infrastructures, streamline business operations, and deliver secure, intuitive digital services.
legl.com • HQ: London, United Kingdom • RegTech, AML & Compliance • Legal Software • 11-50 employees • Est. 2019 • Startup • Hiring 5, 1 new
HQ: London, United Kingdom • RegTech, AML & Compliance • Legal Software • 11-50 employees • Est. 2019 • Startup • Hiring 5, 1 new
Legl is a London company founded in 2019 that digitises client onboarding and payments for law firms. Its platform handles identity checks, anti money laundering screening and fee collection in one workflow. The company serves British law firms modernising processes that traditionally ran on paper and cheques.
apple.com • HQ: Cupertino, United States • Smartwatches & Fitness Trackers • Operating Systems • Tablets • Laptops • Smartphones • 5000+ employees • Est. 1976 • Trust A • Hiring 2725, 347 new
HQ: Cupertino, United States • Smartwatches & Fitness Trackers • Operating Systems • Tablets • Laptops • Smartphones • 5000+ employees • Est. 1976 • Trust A • Hiring 2725, 347 new
Apple is an American multinational technology company founded in 1976 by Steve Jobs, Steve Wozniak and Ronald Wayne, and headquartered in Cupertino, California. It designs and sells consumer hardware including the iPhone, Mac, iPad, Apple Watch, AirPods and Vision Pro, together with the operating systems and silicon that run them. A growing services division built around the App Store, iCloud, Apple Music, Apple TV+ and Apple Pay now contributes a large share of profit, making Apple one of the most valuable companies in the world.
thetrainline.com • HQ: London, United Kingdom • Ticketing • Travel Technology • 501-1000 employees • Est. 1997 • Hiring 31, 6 new
HQ: London, United Kingdom • Ticketing • Travel Technology • 501-1000 employees • Est. 1997 • Hiring 31, 6 new
Trainline is an international digital rail and coach technology platform headquartered in London, United Kingdom, and founded in 1997. The company provides a website and mobile application that allows users to search, compare, and book train and bus tickets across multiple operators. It operates in dozens of countries across Europe and Asia, partnering with over 270 rail and coach carriers to offer travel solutions to millions of active customers.
modelwise.ai • HQ: Munich, Germany • Internet Services • Internet Service Providers • Artificial Intelligence • Manufacturing • 1001-5000 employees • Est. 2020 • Trust B • Hiring 379, 61 new
HQ: Munich, Germany • Internet Services • Internet Service Providers • Artificial Intelligence • Manufacturing • 1001-5000 employees • Est. 2020 • Trust B • Hiring 379, 61 new
Headquartered in Munich, Germany, Modelwise is a deep-tech software company specializing in AI-driven functional safety engineering for complex hardware systems. The platform automates safety analysis and verification tasks, enabling engineers to identify design flaws early and accelerate development cycles. By streamlining compliance workflows, it helps engineering teams across the automotive, aerospace, rail, and industrial automation sectors build safer products faster.
