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. The work ranges from user-facing applications to lower-level system work and interfacing with the backend services that support it.
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. You don't need prior experience with our internal tech; we'll help you ramp up.
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. You'll be someone the team looks to for technical guidance on what's possible on macOS and how to accomplish it well.
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- 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 [email protected]
Skills Required
- significant professional experience building and shipping macOS applications
- strong expertise in the Apple ecosystem
- strong working knowledge of Swift
- comfortable reading and modifying Objective-C
- deep understanding of how macOS works end-to-end
- experienced in building and shipping user interfaces on macOS
- familiar with modern development tooling for the Apple platform
- strong people skills; able to work effectively in small teams
Jane Street Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Jane Street and has not been reviewed or approved by Jane Street.
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Career-Linked Recognition & Rewards — Pay is considered exceptionally strong across roles, with substantial bonuses in strong years and firm-wide performance sharing. Collaboration is expected and rewarded, reinforcing a team-oriented payout model.
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Healthcare Strength — Benefits include zero-premium medical, dental, and vision coverage in the U.S., plus access to on-site or concierge primary care, physical therapy, and mental health services. This breadth and convenience signal a robust healthcare offering.
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Parental & Family Support — Paid parental leave is described as generous, with equipped nursing rooms and backup childcare cited. Family-oriented supports like fertility coverage and elder‑care backup further enhance the package.
Jane Street Insights
What We Do
Jane Street works differently. As a liquidity provider and market maker, we trade on more than 200 trading venues across 45 countries and help form the backbone of global markets. Our approach is rooted in technology and rigorous quantitative analysis, but our success is driven by our people. Our bright, beautiful offices in the heart of New York, London, Hong Kong, and Amsterdam are open and buzzing with conversation. We come from many backgrounds and encourage travel between offices to share perspectives. Some of our best ideas come from bumping into a visiting colleague at the office coffee bar. Markets move fast. Staying competitive as we’ve grown has required constant invention—of new trading strategies, technology, and processes. We’ve found this is easier when you hire humble, kind people. They tend to help each other, and prioritize teamwork over titles. We invest heavily in teaching and training. There’s a library and a classroom in every office, because deepening your understanding of something is considered real work. Guest lectures, classes, and conferences round out the intellectual exchanges that happen every day. People grow into long careers at Jane Street because there are always new and interesting problems to solve, systems to build, and theories to test. More than twenty years after our founding, it still feels like we’re just getting started.
