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.
pleo.io · HQ: Copenhagen, Denmark · Cards & Card Issuing · Procurement & Spend Management · 501-1000 employees · Est. 2015 · Trust A · Hiring 33, 5 new
HQ: Copenhagen, Denmark · Cards & Card Issuing · Procurement & Spend Management · 501-1000 employees · Est. 2015 · Trust A · Hiring 33, 5 new
Pleo is a major European FinTech unicorn and smart business spend management enterprise headquartered in Copenhagen, Denmark. Founded in 2015 by Fintech entrepreneurs Jeppe Rindom (CEO) and Niccolo Perra, the company operates on a B2B SaaS subscription model combined with interchange revenue from corporate card transactions.
faculty.ai · HQ: London, United Kingdom · Management Consulting · Custom Software Development · Decision Intelligence · AI Consulting & Integration · 201-500 employees · Est. 2014 · Startup · Trust A · Hiring 66, 7 new
HQ: London, United Kingdom · Management Consulting · Custom Software Development · Decision Intelligence · AI Consulting & Integration · 201-500 employees · Est. 2014 · Startup · Trust A · Hiring 66, 7 new
Faculty is an artificial intelligence technology company headquartered in London, United Kingdom, and founded in 2014. The firm provides services including AI strategy consulting, custom software development, and specialized talent programs to help organizations implement decision intelligence. It operates as a subsidiary of Accenture and serves a global client base across sectors such as defense, healthcare, and energy, focusing on the safe and high-performance deployment of AI solutions.
blackrock.com · HQ: New York, United States · Nonprofits & Foundations · Artificial Intelligence · Financial Services · Asset Management & Funds · 1001-5000 employees · Est. 1988 · NYSE: BLK · Trust A · Hiring 454, 51 new
HQ: New York, United States · Nonprofits & Foundations · Artificial Intelligence · Financial Services · Asset Management & Funds · 1001-5000 employees · Est. 1988 · NYSE: BLK · Trust A · Hiring 454, 51 new
BlackRock is an American investment management company and the largest asset manager in the world, managing money for pension funds, insurers, sovereign funds, wealth managers and individual investors through mutual funds, iShares exchange-traded funds and institutional mandates. Founded in 1988 and listed on the New York Stock Exchange, it also sells Aladdin, its investment and risk management technology platform, to other financial institutions. The company is headquartered in New York, New York, United States.
kernel.ai · HQ: London, United Kingdom · B2B Company & Contact Data · Data Quality & Observability · Startup · Hiring 15, 1 new
HQ: London, United Kingdom · B2B Company & Contact Data · Data Quality & Observability · Startup · Hiring 15, 1 new
Kernel builds a business identity layer that gives AI agents and sales and operations teams trustworthy company data. It cleans duplicated records, fills in missing parent companies and corrects outdated addresses in CRMs, ERPs and third-party datasets. The company is headquartered in London, United Kingdom.
itv.com · HQ: London, United Kingdom · Streaming & OTT Platforms · TV Production · Broadcasting · 501-1000 employees · Est. 1955 · Hiring 28, 5 new
HQ: London, United Kingdom · Streaming & OTT Platforms · TV Production · Broadcasting · 501-1000 employees · Est. 1955 · Hiring 28, 5 new
Headquartered in London, United Kingdom, ITV is a public media and television production conglomerate operating as the UK's largest commercial broadcaster. The company functions through two core divisions: Media & Entertainment, which operates its portfolio of free-to-air linear channels and the ITVX streaming platform, and ITV Studios, an international content creator and distributor.
broadridge.com · HQ: Lake Success, United States · Custody & Fund Administration · Financial Software & Embedded Finance · 5000+ employees · Est. 2007 · Trust B · Hiring 241, 24 new
HQ: Lake Success, United States · Custody & Fund Administration · Financial Software & Embedded Finance · 5000+ employees · Est. 2007 · Trust B · Hiring 241, 24 new
Broadridge is an American financial technology company spun out of ADP in 2007 that operates much of the invisible infrastructure behind securities markets. It processes shareholder communications and proxy voting for the large majority of United States public company shares, runs post-trade processing and clearance systems for broker-dealers, and sells wealth management, capital markets and communications platforms to banks and asset managers. Headquartered in New York and listed on the New York Stock Exchange, its revenue is almost entirely recurring because clients cannot easily move the record-keeping systems it operates.
Nationwide Building Society is a UK mutual financial institution headquartered in Swindon, England, providing mortgages, current accounts, savings, credit cards and business banking to its members. Owned by its members rather than shareholders, it is the largest building society in the world, operates a national branch network and acquired Virgin Money UK in 2024. Its openings span software, data and integration engineering, analytics, compliance, risk and audit roles, mortgage technical delivery, customer support and branch management, mainly in Swindon, London, Northampton and Glasgow.
seedtag.com · HQ: Madrid, Spain · Artificial Intelligence · Advertising · Est. 2014 · Hiring 15, 3 new
HQ: Madrid, Spain · Artificial Intelligence · Advertising · Est. 2014 · Hiring 15, 3 new
Seedtag is a Madrid advertising technology company founded in 2014 by two former Google employees. Its contextual advertising engine reads the meaning of articles and images to place ads without using personal identifiers. The company operates across Europe and the Americas and is a reference in cookieless advertising.
≈ $59k – $121k per year (Estimated) · Senior · Madrid · Barcelona · Hamburg · London · Milan · Remote (Germany, France, United Kingdom, Belgium, Italy) · Full-Time · Senior
arqfinance.com · HQ: Mexico City, Mexico · Stablecoins · Currency Exchange & FX Payments · Digital Banks & Neobanks · Est. 2021 · Startup · Trust B · Hiring 28, 5 new
HQ: Mexico City, Mexico · Stablecoins · Currency Exchange & FX Payments · Digital Banks & Neobanks · Est. 2021 · Startup · Trust B · Hiring 28, 5 new
ARQ, formerly known as DolarApp, is a financial technology company that offers digital dollar and euro accounts, international payment cards, and cross-border transfer solutions. Built on stablecoin infrastructure, the platform allows users across Latin America to seamlessly convert currencies, send international payments, and store savings in digital assets. Headquartered in Mexico City, Mexico, the firm operates across the Americas to connect consumers and businesses with global financial markets.
flowengineering.com · HQ: San Francisco, United States · CAD, PLM & BIM Software · Manufacturing & Industrial Software · 501-1000 employees · Startup · Trust B · Hiring 35, 3 new
HQ: San Francisco, United States · CAD, PLM & BIM Software · Manufacturing & Industrial Software · 501-1000 employees · Startup · Trust B · Hiring 35, 3 new
Flow Engineering develops Flow, a requirements management and verification platform for hardware engineering teams that links requirements, CAD, simulation, code and test data in one living systems graph, with AI agents that propagate changes and run impact analysis. Its customers are aerospace, defense, automotive and hardware companies, and it has announced a three-year strategic partnership with Rivian and Volkswagen Group Technologies. Based in San Francisco with staff in London, Los Angeles, Austin and Washington, it hires software and infrastructure engineers, forward deployed engineers, solutions architects, account executives, deployment strategists and growth marketers.
depop.com · HQ: London, United Kingdom · Marketplaces · Secondhand · 501-1000 employees · Est. 2011 · Trust B · Hiring 22, 2 new
HQ: London, United Kingdom · Marketplaces · Secondhand · 501-1000 employees · Est. 2011 · Trust B · Hiring 22, 2 new
Depop is a London company founded in 2011 that runs a social marketplace for second hand fashion. Its app blends resale listings with a feed and follower model that suits younger sellers building personal brands. The company was acquired by Etsy and continues to operate from London with millions of active users.
palantir.com · HQ: Denver, United States · Defense AI · Data Integration & ETL Tools · Decision Intelligence · 1001-5000 employees · Est. 2003 · NASDAQ: PLTR · Trust C · Hiring 230, 3 new
HQ: Denver, United States · Defense AI · Data Integration & ETL Tools · Decision Intelligence · 1001-5000 employees · Est. 2003 · NASDAQ: PLTR · Trust C · Hiring 230, 3 new
Palantir Technologies is an American software company founded in 2003 that builds platforms for integrating, analysing and acting on large and fragmented datasets. Its Gotham platform serves defence, intelligence and law enforcement customers, Foundry brings the same data-operating model to commercial industries such as manufacturing, healthcare and energy, and the Artificial Intelligence Platform layers large language models over both. Headquartered in Denver, Colorado and listed on the New York Stock Exchange since 2020, the company is known for deploying forward engineers directly inside customer organisations.
createfuture.com · HQ: Edinburgh, United Kingdom · AI Consulting & Integration · IT Consulting & Digital Transformation · Custom Software Development · 501-1000 employees · Est. 2010 · Trust A · Hiring 43, 9 new
HQ: Edinburgh, United Kingdom · AI Consulting & Integration · IT Consulting & Digital Transformation · Custom Software Development · 501-1000 employees · Est. 2010 · Trust A · Hiring 43, 9 new
CreateFuture is an AI transformation and software engineering partner that builds digital products, platforms, and AI-native solutions for enterprise clients. Headquartered in Edinburgh, Scotland, the company assists organizations across sectors like fintech, energy, and government in modernizing legacy technology and scaling intelligent workflows. Its services span business strategy, cloud infrastructure, customer experience design, and data engineering to drive digital growth.
cityscience.com · HQ: Exeter, United Kingdom · Engineering Services · 51-200 employees · Est. 2015 · Hiring 2
HQ: Exeter, United Kingdom · Engineering Services · 51-200 employees · Est. 2015 · Hiring 2
Carbon first engineering We help clients who are committed to decarbonisation achieve meaningful and quantifiable carbon reductions quickly and efficiently Contact us now City Science is the first engineering company dedicated to decarbonisation.
red-badger.com · HQ: London, United Kingdom · UI/UX Design · IT Consulting & Digital Transformation · Custom Software Development · 201-500 employees · Est. 2010 · Trust A · Hiring 28, 3 new
HQ: London, United Kingdom · UI/UX Design · IT Consulting & Digital Transformation · Custom Software Development · 201-500 employees · Est. 2010 · Trust A · Hiring 28, 3 new
Red Badger is a digital product consultancy that designs and builds software products, web platforms and mobile apps for large enterprises, offering product strategy, user experience design, software engineering and platform delivery. Its clients include banks, retailers and media groups, and it runs delivery teams in the United Kingdom, South Africa and New Zealand. The company is headquartered in London, England, United Kingdom.
circuithub.com · HQ: South Deerfield, United States · Electronics Manufacturing · PCB Fabrication & Assembly · 51-200 employees · Est. 2013 · Startup · Hiring 10
HQ: South Deerfield, United States · Electronics Manufacturing · PCB Fabrication & Assembly · 51-200 employees · Est. 2013 · Startup · Hiring 10
CircuitHub is an electronics manufacturing company that runs an automated electronics factory for rapid prototyping and short-run production, serving hardware companies in robotics, satellites and 3D printing. It has raised venture capital from Y Combinator and Google Ventures and hires production operators and automation engineers. The company is headquartered in South Deerfield, Massachusetts, United States.
bloomon is a flower subscription company built on its own supply chain and logistics software. By shipping directly from growers it cuts several days out of the traditional flower trade. The company is headquartered in Amsterdam and operates across North-West Europe.
baesystems.com · HQ: London, United Kingdom · Naval Systems · Combat Aircraft · Defense Manufacturing · 1001-5000 employees · Est. 1999 · Trust A · Hiring 283, 55 new
HQ: London, United Kingdom · Naval Systems · Combat Aircraft · Defense Manufacturing · 1001-5000 employees · Est. 1999 · Trust A · Hiring 283, 55 new
BAE Systems is a British multinational defence, security and aerospace company headquartered in London, building combat aircraft, warships, submarines, land vehicles, electronic systems and cyber and intelligence products. Formed in 1999 from the merger of British Aerospace and Marconi Electronic Systems, it is listed on the London Stock Exchange and has major operations in the UK, the US, Australia, Saudi Arabia and Qatar, and works on the Edgewing combat air programme. It hires hardware, software, structures, flight systems and spacecraft engineers, test and manufacturing specialists, project managers, supply chain and procurement staff, and graduates.
