Backend Developer jobs in London hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $190,840/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.
catapult.com · HQ: Melbourne, Australia · Sports Wearables · Sports Analytics · 501-1000 employees · Est. 2006 · Trust A · Hiring 18, 1 new
HQ: Melbourne, Australia · Sports Wearables · Sports Analytics · 501-1000 employees · Est. 2006 · Trust A · Hiring 18, 1 new
Catapult builds athlete monitoring wearables and performance analytics. Its systems track movement load and video for elite teams. The company works with thousands of sports organisations worldwide.
monday.com · HQ: Tel Aviv, Israel · Low-Code & No-Code Platforms · Project & Work Management Software · 1001-5000 employees · Est. 2012 · NASDAQ: MNDY · Trust A · Hiring 122, 9 new
HQ: Tel Aviv, Israel · Low-Code & No-Code Platforms · Project & Work Management Software · 1001-5000 employees · Est. 2012 · NASDAQ: MNDY · Trust A · Hiring 122, 9 new
monday.com is a cloud-based Work Operating System (Work OS) platform headquartered in Tel Aviv, Israel, and publicly traded on the NASDAQ (ticker: MNDY). Founded in 2012 by Roy Mann and Eran Zinman, the platform enables organizations to build custom workflow applications to manage projects, sales pipelines, IT operations, and software development through an intuitive, visual no-code interface.
softwire.com · HQ: London, United Kingdom · IT Consulting & Digital Transformation · Custom Software Development · 51-200 employees · Est. 2000 · Hiring 3
HQ: London, United Kingdom · IT Consulting & Digital Transformation · Custom Software Development · 51-200 employees · Est. 2000 · Hiring 3
Softwire is a London software consultancy founded in 2000 that builds custom systems for media, government and commercial clients. It has delivered projects for the BBC, the National Health Service and large publishers using its own engineering teams. The company is known for an unusually strong reputation as a workplace among British developers.
rightmove.co.uk · HQ: Milton Keynes, United Kingdom · PropTech · Est. 2000 · Trust B · Hiring 30, 1 new
HQ: Milton Keynes, United Kingdom · PropTech · Est. 2000 · Trust B · Hiring 30, 1 new
Rightmove is a Milton Keynes company founded in 2000 that operates the dominant property portal in the United Kingdom. Estate agents pay to list homes on a site that receives the great majority of British property search traffic. The company is a member of the FTSE 100 and runs data and valuation products alongside its listings.
fdjunited.com · HQ: Boulogne-Billancourt, France · Sports Betting · iGaming & Gambling · 1001-5000 employees · Trust B · Hiring 32, 4 new
HQ: Boulogne-Billancourt, France · Sports Betting · iGaming & Gambling · 1001-5000 employees · Trust B · Hiring 32, 4 new
FDJ United is a European betting and gaming operator headquartered in Boulogne-Billancourt, France, that runs the French national lottery and retail sports betting under exclusive rights and offers online betting and gaming brands in markets open to competition. The group descends from the National Lottery created in 1933 to aid wounded First World War veterans, took the FDJ United name in 2025 after La Française des Jeux acquired Kindred Group, and has more than 5,000 employees in about fifteen regulated markets. Hiring spans AML and responsible gaming specialists, customer service agents, software and data engineers in London, Malta, Stockholm and France.
smartworkingsolutions.com · HQ: London, United Kingdom · IT Outsourcing & Dedicated Teams · IT Staffing & Staff Augmentation · Est. 2020 · Likely startup · Hiring 12, 4 new
HQ: London, United Kingdom · IT Outsourcing & Dedicated Teams · IT Staffing & Staff Augmentation · Est. 2020 · Likely startup · Hiring 12, 4 new
Smart Working Solutions is a remote staffing company that recruits software engineers, data and cloud specialists and business development professionals, largely in India, and places them full-time with client companies in the United Kingdom and other markets. It handles sourcing, vetting and ongoing employment of the remote team members it supplies. The company is headquartered in London, England, United Kingdom.
≈ $83k – $168k per year (Estimated) · Senior · 8+ years exp · London · Madrid · Lisbon · Bucharest · Remote (United Kingdom, Romania, Spain, Portugal, UK time hours) · Full-Time · Senior · English
fundapps.co · HQ: London, United Kingdom · RegTech, AML & Compliance · 201-500 employees · Est. 2010 · Trust A · Hiring 5, 1 new
HQ: London, United Kingdom · RegTech, AML & Compliance · 201-500 employees · Est. 2010 · Trust A · Hiring 5, 1 new
FundApps is a London regulatory technology company founded in 2010 that automates shareholding disclosure and position limit monitoring. Its service maintains the rules for scores of jurisdictions centrally so that asset managers do not each interpret them separately. The company monitors trillions of dollars of assets for investment firms worldwide.
claimsorted.com · HQ: London, United Kingdom · Insurance Brokers & Agencies · Health Insurance & Benefits · 51-200 employees · Startup · Hiring 16, 1 new
HQ: London, United Kingdom · Insurance Brokers & Agencies · Health Insurance & Benefits · 51-200 employees · Startup · Hiring 16, 1 new
Turning claims into your advantage. ClaimSorted is a tech-enabled claims TPA delivering faster claims cycles, lower leakage, and five-star policyholder experiences for MGAs and carriers.
transperfectgames.com · HQ: New York, United States · Game Development · Software Testing & QA · Translation Services · 1001-5000 employees · Trust B · Hiring 359, 12 new
HQ: New York, United States · Game Development · Software Testing & QA · Translation Services · 1001-5000 employees · Trust B · Hiring 359, 12 new
TransPerfect Games is the video game services division of TransPerfect, the language services and technology company headquartered in New York. It supports developers and publishers with localization, linguistic and functional QA testing, audio and art production, game engineering and porting, accessibility, marketing, player support and community management through production hubs and test labs worldwide. The careers board it links to belongs to the whole TransPerfect group and lists gaming linguist testers, interpreters, linguists, solutions engineers, account managers, eDiscovery, medical writing and sales roles.
atkinsrealis.com · HQ: Montreal, Canada · Transport Infrastructure · Civil & Structural Engineering · Engineering Services · Nuclear Energy · 5000+ employees · Est. 1911 · Trust B · Hiring 1743, 111 new
HQ: Montreal, Canada · Transport Infrastructure · Civil & Structural Engineering · Engineering Services · Nuclear Energy · 5000+ employees · Est. 1911 · Trust B · Hiring 1743, 111 new
AtkinsRéalis is a Canadian professional services and project management company created when the engineering firm SNC-Lavalin, founded in Montreal in 1911, acquired the British consultancy Atkins in 2017 and adopted the combined name in 2023. It designs and manages infrastructure programmes across transport, water, buildings, energy and defence, and holds a substantial nuclear business through Candu Energy that services and builds heavy water reactors. Headquartered in Montreal and listed in Toronto, the group employs tens of thousands of engineers, planners and consultants across Canada, the United Kingdom, the Middle East and Asia Pacific.
sonyinteractive.com · HQ: San Mateo, United States · Media & Entertainment · Gaming · Game Development · Console Games · Gaming Consoles · 5000+ employees · Est. 1993 · Trust A · Hiring 185, 22 new
HQ: San Mateo, United States · Media & Entertainment · Gaming · Game Development · Console Games · Gaming Consoles · 5000+ employees · Est. 1993 · Trust A · Hiring 185, 22 new
Sony Interactive Entertainment is the video game division of the Sony group, formed in 1993 to develop the original PlayStation and now headquartered in San Mateo, California rather than Tokyo. It designs and sells the PlayStation consoles and accessories, runs the PlayStation Network and its PlayStation Plus subscription service, and owns PlayStation Studios, a group of development studios including Naughty Dog, Insomniac Games, Guerrilla Games, Santa Monica Studio and Bungie. The business earns most of its revenue from software and network services rather than hardware, and its first-party titles are increasingly released on personal computers after a console exclusivity window.
heidihealth.com · HQ: Collingwood, Australia · EHR & Clinical Software · Medical AI · 51-200 employees · Est. 2022 · Startup · Trust A · Hiring 45, 1 new
HQ: Collingwood, Australia · EHR & Clinical Software · Medical AI · 51-200 employees · Est. 2022 · Startup · Trust A · Hiring 45, 1 new
Heidi is an Australian health technology company based in Collingwood, Melbourne, that makes an AI care partner for clinicians, automating clinical documentation, form filling and task management in general practice, emergency departments and specialist clinics. Founded in 2022 as Heidi Health, it reports millions of patient sessions a week in 110 languages, has raised 96.6 million US dollars from investors including Point72, Blackbird and Headline, and supplies NHS trusts and GP practices in the UK. Heidi hires product managers, backend and platform engineers, forward deployed engineers, and customer success, sales and partnerships staff in Melbourne, Sydney, London and New York.
nasstar.com · HQ: London, Wakefield, United Kingdom · Cloud Consulting & Migration · IT Consulting & Digital Transformation · Managed IT Services (MSP) · 201-500 employees · Est. 1998 · Hiring 11
HQ: London, Wakefield, United Kingdom · Cloud Consulting & Migration · IT Consulting & Digital Transformation · Managed IT Services (MSP) · 201-500 employees · Est. 1998 · Hiring 11
Nasstar is a London managed service provider that delivers cloud, networking and digital transformation services. It was assembled from several British technology firms and works with public sector, transport and enterprise clients. The company covers application modernisation and managed infrastructure under long-term contracts.
libertyglobal.com · HQ: London, United Kingdom · Mobile Networks · Broadband · 201-500 employees · NASDAQ: LBTYA · Trust A · Hiring 12
HQ: London, United Kingdom · Mobile Networks · Broadband · 201-500 employees · NASDAQ: LBTYA · Trust A · Hiring 12
Liberty Global is an international telecommunications and media company that owns broadband and mobile network businesses in Europe. Its job ads cover finance internships, corporate tax strategy, AI architecture, technical project management and executive support. The company is headquartered in London, United Kingdom.
omnea.co · HQ: London, United Kingdom · Procurement & Spend Management · 1001-5000 employees · Est. 2022 · Trust B · Hiring 67, 2 new
HQ: London, United Kingdom · Procurement & Spend Management · 1001-5000 employees · Est. 2022 · Trust B · Hiring 67, 2 new
Omnea is a London-based software company that builds a procurement orchestration platform for managing third-party spend. Its product routes purchase requests, approvals, supplier onboarding and risk reviews through one workflow connecting finance, legal, security and procurement teams, replacing processes scattered across email and spreadsheets at mid-sized and enterprise customers. Founded in 2022, it has sales teams in New York, Melbourne and Toronto and is headquartered in London, England, United Kingdom.
bny.com · HQ: New York, United States · Asset Management & Funds · Custody & Fund Administration · Wealth Management & Financial Advisors · 1001-5000 employees · Est. 1784 · Trust B · Hiring 665, 24 new
HQ: New York, United States · Asset Management & Funds · Custody & Fund Administration · Wealth Management & Financial Advisors · 1001-5000 employees · Est. 1784 · Trust B · Hiring 665, 24 new
BNY, formerly BNY Mellon, is a global financial services company headquartered in New York City, providing custody, fund administration, clearing, corporate trust, treasury and payments services, investment management through BNY Investments, and wealth management to institutions and individuals. Founded in 1784 by Alexander Hamilton, it oversees about 62.6 trillion dollars in assets under custody and administration and has large operations in Pittsburgh, Lake Mary, Manchester, London, Dublin and Pune. Hiring spans fund administration and client service, audit, data, AI and full-stack engineering, product management and analyst and summer internship programs.
airwallex.com · HQ: Singapore · Cards & Card Issuing · Currency Exchange & FX Payments · Payment Processing & Gateways · 1001-5000 employees · Est. 2015 · Trust A · Hiring 485, 34 new
HQ: Singapore · Cards & Card Issuing · Currency Exchange & FX Payments · Payment Processing & Gateways · 1001-5000 employees · Est. 2015 · Trust A · Hiring 485, 34 new
Airwallex is a financial technology company founded in Melbourne in 2015 that builds cross-border payment and treasury infrastructure for businesses. It holds payment and money transfer licences in a large number of jurisdictions, which lets customers open local currency accounts, collect and pay out in dozens of currencies, issue cards and embed those capabilities through APIs rather than assembling bank relationships themselves. The company moved its headquarters to Singapore, serves marketplaces, software platforms and international ecommerce sellers, and has raised more than a billion dollars from growth investors.
encord.com · HQ: London, United Kingdom · MLOps · AI Training Data & Annotation · 201-500 employees · Est. 2020 · Startup · Hiring 44
HQ: London, United Kingdom · MLOps · AI Training Data & Annotation · 201-500 employees · Est. 2020 · Startup · Hiring 44
Encord is a data development platform for artificial intelligence that helps teams curate, annotate and evaluate image, video, audio, text and sensor data used to train and test models. Its software is used by physical AI, robotics, medical imaging and enterprise teams for pre-training, post-training and model evaluation workflows. Founded in 2020, the company has offices in London, San Francisco and New York and is headquartered in London, United Kingdom.
rescue.org · HQ: New York, United States · Nonprofits & Foundations · 1001-5000 employees · Est. 1933 · Trust B · Hiring 159, 29 new
HQ: New York, United States · Nonprofits & Foundations · 1001-5000 employees · Est. 1933 · Trust B · Hiring 159, 29 new
International Rescue Committee (IRC) is a global humanitarian aid organisation that responds to conflicts and disasters, providing emergency health care, clean water, protection, education and economic support to refugees and displaced people. Founded in 1933, it works in more than 40 countries and runs refugee resettlement and immigrant integration offices in over 20 US cities. Its staff include health, finance, program and logistics specialists in crisis regions such as East Africa. The organisation is headquartered in New York, New York, United States.
