Support Engineer jobs in London hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $74,180/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.
costar.com · HQ: Arlington, United States · Online Classifieds · Commercial Real Estate · Data Providers & Datasets · PropTech · 1001-5000 employees · Est. 1987 · Trust B · Hiring 309, 5 new
HQ: Arlington, United States · Online Classifieds · Commercial Real Estate · Data Providers & Datasets · PropTech · 1001-5000 employees · Est. 1987 · Trust B · Hiring 309, 5 new
CoStar Group is a real estate information, analytics and online marketplace company headquartered in Arlington, Virginia, behind the CoStar database and brands such as LoopNet, Apartments.com, Homes.com, Land.com, Ten-X, BizBuySell, STR, Matterport and OnTheMarket. Founded in 1987 by Andrew Florance, it is listed on NASDAQ and in the S&P 500, with major offices in Richmond, Irvine, London, Paris and Sydney serving brokers, owners, lenders, landlords and home buyers. It hires software, AI and security engineers, field researchers, account executives and sales associates, product marketers, recruiters and finance and lease administration staff.
citi.com · HQ: New York, United States · Cards & Card Issuing · Payment Processing & Gateways · Wealth Management & Financial Advisors · Investment Banking & M&A Advisory · Commercial & Retail Banks · 5000+ employees · Est. 1812 · Trust A · Hiring 3850, 362 new
HQ: New York, United States · Cards & Card Issuing · Payment Processing & Gateways · Wealth Management & Financial Advisors · Investment Banking & M&A Advisory · Commercial & Retail Banks · 5000+ employees · Est. 1812 · Trust A · Hiring 3850, 362 new
Citi is one of the largest banks in the world, tracing its lineage to the City Bank of New York founded in 1812 and taking its modern shape through the 1998 merger that created Citigroup. Its most distinctive asset is a cross-border payments and treasury network unmatched by any competitor, moving trillions of dollars a day for multinational corporations, governments and other banks across roughly ninety countries. Alongside that institutional franchise it runs markets and investment banking, wealth management and a United States personal bank, and has spent recent years simplifying itself by exiting consumer operations across Asia, Europe and Latin America.
capstoneinvestmentadvisors.com · HQ: New York, United States · Asset Management & Funds · Hedge Funds & Alternative Investments · 201-500 employees · Est. 2004 · Trust A · Hiring 15, 1 new
HQ: New York, United States · Asset Management & Funds · Hedge Funds & Alternative Investments · 201-500 employees · Est. 2004 · Trust A · Hiring 15, 1 new
Capstone Investment Advisors is a global alternative investment management firm that operates a broad range of derivatives-based strategies with a focus on volatility. It was formed in 2007 and has offices in London, Amsterdam, Tokyo, California and Stamford, and it hires interns in quantitative, risk technology and investment teams. The firm is headquartered in New York, United States.
janestreet.com · HQ: New York, United States · Hedge Funds & Alternative Investments · 1001-5000 employees · Est. 2000 · Trust B · Hiring 168, 2 new
HQ: New York, United States · Hedge Funds & Alternative Investments · 1001-5000 employees · Est. 2000 · Trust B · Hiring 168, 2 new
Jane Street (Jane Street Capital) is a quantitative trading firm and liquidity provider specializing in automated market making, algorithmic execution, and high-frequency trading. Headquartered in New York, New York, the firm operates major regional hubs in London, Hong Kong, Singapore, and Amsterdam. Its core activities involve deploying proprietary quantitative research, machine learning models, and low-latency infrastructure to facilitate continuous trading across exchange-traded funds (ETFs), equities, options, fixed income, futures, and derivative products across more than 200 trading venues globally.
crypto.com · HQ: Singapore · Crypto Payments · Crypto Wallets · Crypto Exchanges · 501-1000 employees · Est. 2016 · Trust B · Hiring 86, 1 new
HQ: Singapore · Crypto Payments · Crypto Wallets · Crypto Exchanges · 501-1000 employees · Est. 2016 · Trust B · Hiring 86, 1 new
Crypto.com is a cryptocurrency platform that runs an exchange and app for buying, selling and storing digital assets, along with prepaid cards, a non-custodial wallet and crypto payment services for merchants. Founded in 2016 and headquartered in Singapore, it holds licences in several jurisdictions and has offices in Hong Kong, the United States, Australia, Dubai and Europe. It hires software engineers, data analysts, product designers and corporate development staff, including for its prediction markets business.
tscp.com · HQ: Saint Louis, United States · Private Equity · Est. 2000 · Hiring 8, 1 new
HQ: Saint Louis, United States · Private Equity · Est. 2000 · Hiring 8, 1 new
Thompson Street Capital Partners is a private equity firm focused on acquiring founder-led middle market businesses. It invests in companies across software and technology, healthcare, and business and industrial services, working alongside founders to professionalize and grow their businesses. The firm was founded in 2000 and is headquartered in Saint Louis, Missouri.
collinsongroup.com · HQ: London, United Kingdom · Business Travel · Property & Casualty Insurance · Loyalty Programs · 1001-5000 employees · Est. 1989 · Trust B · Hiring 84, 7 new
HQ: London, United Kingdom · Business Travel · Property & Casualty Insurance · Loyalty Programs · 1001-5000 employees · Est. 1989 · Trust B · Hiring 84, 7 new
Collinson is a privately owned, family-led travel, loyalty and insurance services group headquartered in London, England, known for the Priority Pass airport lounge program, the Columbus Direct travel insurance brand and loyalty consultancy work. It employs more than 2,300 people across 14 countries and serves banks, card networks, airlines and hotel groups, with clients such as Visa, Mastercard, American Express and Cathay Pacific. It hires software, web, Android and data engineers, analytics and AI engineers, product and partnership managers, account managers and multilingual customer service advisors in Mumbai, Dallas and Sao Paulo.
openai.com · HQ: San Francisco, United States · Code Intelligence · Conversational AI · AI Research Labs · Foundation Models · LLM & Generative AI · 5000+ employees · Est. 2015 · Trust B · Hiring 788, 53 new
HQ: San Francisco, United States · Code Intelligence · Conversational AI · AI Research Labs · Foundation Models · LLM & Generative AI · 5000+ employees · Est. 2015 · Trust B · Hiring 788, 53 new
OpenAI is an American artificial intelligence research and deployment company founded in 2015 with the mission of ensuring that artificial general intelligence benefits all of humanity. It develops the GPT family of large language models and turns them into consumer and developer products, including the ChatGPT assistant, the Sora video model, the Codex coding agent and a commercial API used by millions of developers. Structured as a public benefit corporation controlled by a non-profit foundation, the company is backed by Microsoft and SoftBank and operates from San Francisco.
finscan.com · London · Pittsburgh · RegTech, AML & Compliance · 51-200 employees · Hiring 5
London · Pittsburgh · RegTech, AML & Compliance · 51-200 employees · Hiring 5
FinScan provides AML and KYC compliance software for sanctions & watchlist screening, payment screening, and beneficial ownership identification — used by insurers, banks, fintechs, bigtech and money service businesses worldwide.
chicagotrading.com · HQ: Chicago, United States · Online Brokerage & Trading Platforms · Est. 1995 · Trust B · Hiring 14
HQ: Chicago, United States · Online Brokerage & Trading Platforms · Est. 1995 · Trust B · Hiring 14
Who We Are Careers Job Search News / Events Campus Recruiting WHO WE ARE CAREERS JOB SEARCH NEWS & EVENTS CAMPUS RECRUITING 01 About Us 02 Locations 03 Contact Us About Us Chicago Trading Company is a proprietary trading firm founded in 1995.
iru.com · HQ: Miami, United States · Security Compliance · Identity Management · Endpoint Security · IT Service & Asset Management · Est. 2018 · Startup · Trust A · Hiring 24, 1 new
HQ: Miami, United States · Security Compliance · Identity Management · Endpoint Security · IT Service & Asset Management · Est. 2018 · Startup · Trust A · Hiring 24, 1 new
Iru is an AI-powered technology company that provides a unified IT and cybersecurity platform for managing devices, identity access, and regulatory compliance. Headquartered in Miami, Florida, the enterprise offers an integrated software suite designed to protect endpoint infrastructure across Apple, Windows, and Android environments. Formerly known as Kandji, its automated solutions help organizations consolidate fragmented security stacks, accelerate device deployment, and maintain continuous audit readiness.
fitch.group · HQ: New York, United States · Financial Data & Market Intelligence · Credit Bureaus & Rating Agencies · 1001-5000 employees · Est. 1913 · Hiring 141, 7 new
HQ: New York, United States · Financial Data & Market Intelligence · Credit Bureaus & Rating Agencies · 1001-5000 employees · Est. 1913 · Hiring 141, 7 new
Fitch Group is a financial information services group, dual headquartered in New York and London, made up of the credit rating agency Fitch Ratings, the data and analytics business Fitch Solutions and Fitch Learning. It traces its history to the Fitch Publishing Company launched in New York in 1913, is owned by Hearst and employs more than 5,000 people in 31 countries, including about 1,700 analysts covering corporates, financial institutions, structured finance and sovereigns. It hires credit analysts and structured finance analysts alongside software, data and machine learning engineers, product owners and sales staff, with large hubs in New York, Toronto, Chicago and London.
reiss.com · HQ: London, United Kingdom · Apparel & Fashion Brands · Est. 1971 · Trust B · Hiring 192, 30 new
HQ: London, United Kingdom · Apparel & Fashion Brands · Est. 1971 · Trust B · Hiring 192, 30 new
Reiss is an international fashion retail brand specializing in premium menswear, womenswear, childrenswear, tailoring, footwear, and accessories. Headquartered in London, United Kingdom, the enterprise designs contemporary wardrobe staples and modern tailoring influenced by heritage craftsmanship. Founded in 1971 by David Reiss, the brand operates across an omnichannel retail footprint of over 200 points of sale, standalone boutiques, and department store concessions globally.
workiva.com · HQ: Ames, United States · RegTech, AML & Compliance · ESG & Carbon Accounting Software · Accounting & Tax Software · 1001-5000 employees · Est. 2008 · NYSE: WK · Trust A · Hiring 94, 7 new
HQ: Ames, United States · RegTech, AML & Compliance · ESG & Carbon Accounting Software · Accounting & Tax Software · 1001-5000 employees · Est. 2008 · NYSE: WK · Trust A · Hiring 94, 7 new
Workiva is an American software company that provides a cloud platform for financial reporting, ESG and sustainability reporting, and governance, risk and compliance, letting finance, accounting and audit teams link data across documents and automate regulatory filings such as SEC reports. Founded in 2008 as WebFilings and listed on the New York Stock Exchange, it serves thousands of organizations, including a large share of the Fortune 500, from offices in North America, Europe and Asia-Pacific. The company is headquartered in Ames, Iowa, United States.
telefonicatech.com · HQ: Madrid, Spain · Cloud Consulting & Migration · Managed Security · 501-1000 employees · Est. 2019 · Trust B · Hiring 44, 4 new
HQ: Madrid, Spain · Cloud Consulting & Migration · Managed Security · 501-1000 employees · Est. 2019 · Trust B · Hiring 44, 4 new
Telefónica Tech is the digital business unit created by Telefónica in 2019 to group its cybersecurity, cloud, internet of things and data services. It integrates and operates enterprise technology for large corporations and public bodies across Europe and Latin America. The unit employs several thousand specialists and runs a network of security operations centres.
comcast.com · HQ: Philadelphia, United States · Theme Parks & Attractions · Internet Service Providers · Streaming & OTT Platforms · Broadband · Broadcasting · 5000+ employees · Est. 1963 · NYSE: CCZ · Trust A · Hiring 523, 79 new
HQ: Philadelphia, United States · Theme Parks & Attractions · Internet Service Providers · Streaming & OTT Platforms · Broadband · Broadcasting · 5000+ employees · Est. 1963 · NYSE: CCZ · Trust A · Hiring 523, 79 new
Comcast is an American media and telecommunications group founded in 1963 that grew from a single cable system in Mississippi into the largest broadband provider in the United States. Its connectivity business supplies internet, video, mobile and business services under the Xfinity brand, and it owns NBCUniversal, which combines broadcast and cable networks, the Universal film and television studios, the Peacock streaming service and theme parks, alongside the British operator Sky. Headquartered in Philadelphia and listed on Nasdaq, it separated most of its cable networks into a standalone company in 2025.
statestreet.com · HQ: Boston, United States · Asset Management & Funds · Custody & Fund Administration · 5000+ employees · Est. 1792 · NYSE: STT · Trust A · Hiring 881, 122 new
HQ: Boston, United States · Asset Management & Funds · Custody & Fund Administration · 5000+ employees · Est. 1792 · NYSE: STT · Trust A · Hiring 881, 122 new
State Street is an American financial institution founded in Boston in 1792 and one of the oldest banks in the United States, though its modern business bears little resemblance to retail banking. It is one of the three dominant global custodians, holding trillions of dollars of assets in safekeeping for institutional investors and providing the fund accounting, administration and settlement infrastructure that asset managers depend on. Its investment arm State Street Global Advisors created the first American exchange traded fund with the SPDR S&P 500 Trust and remains one of the largest index managers in the world.
21shares.com · New York · Noida · Zurich · London · Asset Tokenization · Online Brokerage & Trading Platforms · 51-200 employees · Est. 2018 · Hiring 2
New York · Noida · Zurich · London · Asset Tokenization · Online Brokerage & Trading Platforms · 51-200 employees · Est. 2018 · Hiring 2
21shares is a fintech company that offers cryptocurrency exchange-traded products (ETPs) for enabling investors to access digital assets through regulated exchanges with secure investment solutions.
