Jane Street is hiring a MacOS Software Engineer in Software Engineering — New York, New York, United States. The overview below is synthesized from the employer posting on janestreet.com: factual requirements and scope are preserved, but prose is rewritten with editorial context. Verify details and apply via the employer link.
About the Position
Company context from the listing:
We're looking for an experienced Software Engineer with deep macOS software experience who is also willing to work in other languages and on other platforms.
In this role, you’ll help build and maintain macOS internal applications and services used by our colleagues across the firm. Our macOS footprint is growing, and we want someone who can lead on the platform side of that work—both through hands-on development and guiding the rest of the team around what's reasonable to build, and how to build it well.
While macOS and Swift will be your area of focus, you won't be pigeonholed there—you’ll also receive training to work in OCaml. Much of what our team owns is cross-platform, and you'll contribute to services and applications across a variety of languages and stacks as part of a small, collaborative team.
Beyond hands-on development, you'll play a key role in leveling up our team's macOS engineering practices. This includes establishing CI/CD pipelines and automated builds, improving our development tooling, and defining best practices for the platform.
Strong communication and interpersonal skills are essential, as you'll collaborate with engineers and stakeholders across the firm to understand requirements, plan work, and deliver solutions that meet a variety of business needs.
About You
Company context from the listing:
- Have significant professional experience building and shipping macOS applications, and strong expertise in the Apple ecosystem
- Have a strong working knowledge of Swift, and are comfortable reading and modifying Objective-C where it comes up
- Have a deep understanding of how macOS actually works end-to-end: how multi-component applications are structured, how applications interact with the operating system, how software is packaged and delivered, and how apps behave in a managed environment
- Experienced in building and shipping user interfaces on macOS with SwiftUI, AppKit, or both
- Familiar with modern dev tooling for the Apple platform, including CI/CD, automated builds, code signing, and notarization
- You understand how managed macOS environments work in practice, or have a genuine interest in learning
- Interested in contributing outside your primary expertise—we cover a broad stack and are seeking people who enjoy picking up new languages and tools
- Have strong people skills; able to work effectively in small, collaborative teams
- Having familiarity with iOS development is a plus, as there may occasionally be opportunities to work on internal mobile apps
If you're a recruiting agency and want to partner with us, please reach out to agency-partnerships@janestreet.com
Build a standout application
For the MacOS Software Engineer at Jane Street, reviewers look for concise evidence over buzzwords. Mirror the language of the posting sparingly, quantify support or delivery outcomes, and show how you handled ambiguity, time-zone collaboration and user empathy. Keep your resume to impact, keep your cover note to one page, and link to artifacts — tickets resolved, docs shipped, dashboards owned — that prove you can operate in a fast-moving Web3 team. Prepare to discuss a time you turned a confusing user report into a clear fix and how you measure quality in support and operations.
Web3 hiring values reliability: on-time follow-through, clear writing, and a track record of improving runbooks and tooling. Treat the application as a work sample. For interviews, be ready to walk through how you prioritize across time zones, handle a difficult user, and decide when to escalate versus resolve directly. Show how you document decisions so the next teammate benefits.
In a distributed Web3 org, trust builds through written clarity. Use the cover note to demonstrate it.