Java Server Engineer

Interactive Brokers Group, Inc. (NASDAQ: IBKR), a member of the S&P 500, is a global financial services company headquartered in Greenwich, Connecticut, with offices in over 15 countries. Through its affiliates, Interactive Brokers provides automated trade execution and custody of securities, commodities, foreign exchange, and prediction markets on over 170 markets in numerous countries and currencies.

For more than four decades, Interactive Brokers has focused on technology, automation, and innovation to provide clients worldwide with a sophisticated, unified platform to manage their investment portfolios. We serve individual investors, hedge funds, proprietary trading groups, financial advisors, and introducing brokers.

Our culture is driven by problem-solving, efficiency, and continuous improvement. We look for individuals who are intellectually curious, collaborative, and motivated to contribute to technology that helps simplify and enhance access to global financial markets. Interactive Brokers has consistently been recognized as a top broker by respected industry sources including Barron’s, Investopedia, , and others.

Covestor Limited (doing business as Interactive Advisors ("IA")) are part of the IBKR group. We are an online robo-advisor and investing platform, offering clients in the USA a variety of portfolios. This role will be permanent with IA, and working with us you will get exposure to Interactive Advisors work streams but also many projects working with the wider IBKR group.

We'relooking for a talented and driven Java Engineer to take a hands-on delivery role across our core financial systems.

You'llbe a co-owner of our codebase, a trusted colleague to your peers, and a key contributor to how weevolveour platform. Crucially,you'llbring a genuine understanding of AI concepts and how they can be applied to solve realproductproblems.

We currently operate a hybrid working model at IBKR, and so you will be able to commute to our fantastic central London office (The Walkie Talkie Building) 3 days per week, where you will be pleased to hear we offer lunch every day you are in the office from a selection of vendors.

• Taking end-to-end delivery ownership of key software development projects and enhancements
• Designing and building scalable, server-side Java services that enhance our core financial systems
• Monitoring, managing and further automating business operations
• Acting as a co-owner of the codebase — proactively identifying and implementing improvements
• Collaborating closely with stakeholders to ensure requirements are well understood, designs are sound and deadlines are met
• Reviewing designs and code produced by colleagues, providing clear and constructive feedback

• 3+ years of industry experience with a strong track record of delivery
• Solid server-side design and development skills; our stack is
  Java, Linux,Apacheand Mongo and Postgres
• Exposure to Spring Boot and Elasticsearch is a plus
• Familiarity with the full agile development lifecycle: version control, testing, CI/CD and build tooling
• A strong grasp of
  AI concepts
  -including familiarity with LLMs, machine learning fundamentals, promptengineeringor AI-assisted development toolingis a plus
• Familiarity with vector embeddings and semantic searchis a plus
• Experience designing or building agentic AI systems- including tool use, multi-step reasoning,structured output- is a strong plus
• A strong foundation in core computer science principles: algorithms, data structures, system design

• Strong organisational and communication skills, comfortable engaging both engineers and business stakeholders
• Able to apply creative, pragmatic thinking to find elegant solutions rather than just brute-force ones
• Demonstrates strong personal integrity and accountability
• Open to and actively seeks constructive feedback
• A degree in Computer Science, Engineering or a related STEM discipline; a postgraduate qualification is a plus

• A passionate advocate for clean, concise and simple code and design
• A natural technical leader who earns the trust and confidence of peers
• A collaborative team player — comfortable…