Java Server Engineer
Confirmed on the employer's own hiring board on Oct 7, 2026. First seen by Alion on Jul 31, 2026. Interactive Brokers scores B on the Alion truth index.
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're looking for a talented and driven Java Engineer to take a hands-on delivery role across our core financial systems. You'll be a co-owner of our codebase, a trusted colleague to your peers, and a key contributor to how we evolve our platform. Crucially, you'll bring a genuine understanding of AI concepts and how they can be applied to solve real product problems.
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.
Responsibilities
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
Requirements
Technical
3+ years of industry experience with a strong track record of delivery
Solid server-side design and development skills; our stack is Java, Linux, Apache and 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, prompt engineering or AI-assisted development tooling is a plus
Familiarity with vector embeddings and semantic search is 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
Soft Skills & Ways of Working
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
Academic
A degree in Computer Science, Engineering or a related STEM discipline; a postgraduate qualification is a plus
Personal Attributes
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 giving and receiving constructive feedback, following as well as leading, and always willing to learn
Someone who thrives in a fast-paced, relatively unstructured environment and takes genuine personal accountability for outcomes
Quick to get up to speed in new business domains, asking the right questions and absorbing new concepts rapidly
Location:
20 Fenchurch Street, London, EC3M 3BY
9am – 6pm, Monday – Friday
Benefits:
Career support and development
Salary commensurate with experience
Performance based discretionary cash bonus scheme
Discretionary stock grant
Group Life Assurance cover
Group Income Protection
Occupation pension scheme based on Gross earnings
Hybrid working model
Above statutory annual leave, increasing with service
Daily company-paid lunch and healthy snack options throughout the day (when working from the office)
Access to Private Medical Insurance, Dental Plan and / or Health Cash Plan*
Corporate events
Travel season ticket loans*
Cycle to work scheme*
Fitness subsidisation
*on successful completion of the probation period