ApplySarthiFront End Software Engineer
Janestreet
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What software roles keep asking for: Python (37%), Java (30%), AWS (29%), System design (26%), C++ (25%), CI/CD (23%), Observability (22%), Kubernetes (20%) — counted across their open postings here.
Angular jobs · CSS jobs · Flutter jobs · React jobs
Janestreet has 20 open roles listed here.
- Technical Product Manager
- Software Engineer
- Senior Network Engineer
- Network Security Engineer
- Market Data Specialist, Metadata
Counted across 14 company job boards, updated as roles open and close.
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Interviews for software roles keep coming back to Python, Java, AWS, System design. Practise those questions before you sit with Janestreet.
Questions you are likely to be asked
- Why do you want to join Janestreet?
- What is your experience with Angular? Tell me one thing you learned the hard way.
- Tell me about a UI you built that users struggled with. What did you change?
- How do you make a page accessible and work on every screen size?
- Walk me through how a page loads, from typing the URL to seeing it.
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Practise the Front End Software Engineer at Janestreet interview free →We’re looking for a software engineer who is passionate about front-end development, user-interface design, and typed functional programming. You would take part in the design and implementation of our next-generation of browser-based tools for operating our trading infrastructure.
We’re building for expert users, which means we want to maintain a high UX bar, and at the same time create tools that are flexible and powerful enough to satisfy the needs of deeply engaged users.
Beyond working on the individual tools, we want someone who can find opportunities to create libraries and abstractions that capture common interaction idioms, and to sharpen our development practices and firm-wide approach to UI development.
We’re looking to add someone with a particular mix of skills and experience:
- A strong background in web technologies, including browser fundamentals like CSS and the DOM, and an understanding of the principles of UI frameworks like Vue, Angular, React, and Flutter
- Practical experience building sophisticated UIs in the browser. We’re looking for someone who loves the detailed polishing that’s needed to build elegant and highly usable UIs
- An interest in and appreciation of typed functional programming as an approach to UI construction. Experience with languages like Elm, ReasonML, Purescript, and Typescript is a plus (we don’t expect experience in OCaml in particular.)
The role will provide opportunities to work in multiple parts of the stack, including front-ends, back-ends, middleware, and databases. The job will also involve working closely with traders and other end-users to better understand their needs.
Fluency in English is required
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Listed on arbeitnow · posted 2026-11-11. ApplySarthi collects openings and links to application pages; the role is advertised by Janestreet, not by us.