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Sr. Software Engineer, Endpoint Security - (Trail of Bits)

Trail Of Bits Full Time Software Engineer Remote-US Remote-Canada

Remote Job Description

Join our Engineering Services team

Our engineering services team works closely with business customers in tech, defense, and finance on quick-response feature development, bug fixes, and integration of the tools they depend on for endpoint detection and response, event log aggregation, secure software updates, and security testing. We use the best of open-source software for our work, and regularly contribute enhancements to these projects as a result.

Role Description

You will develop software solutions with a focus on security – custom tools for security operations, automated bug-finding systems, and secure software engineering – using modern practices such as regular code reviews, test-driven development, and milestone-tracked issue tasking.

We are hiring experienced Software Engineers with professional backgrounds in developing systems software, desktop applications, mobile, or cloud software. This role has a specific emphasis on macOS and iOS system and application development. We're looking for someone comfortable with iOS and macOS development in Swift, Objective-C, and C++.

This position is not a fit for you if your experience is primarily front-end, web, or if you don't have a background or strong interest in security. The ideal candidate is proficient in either C++, Python, having spent at least 2 years developing it professionally.

You will work in a small (2-4 people) team of engineers on 4-8 week development cycles, reporting to the Engineering Services Lead. With the exception of maintaining core hours of availability and attending meetings, you will have a results-focused work schedule that works best for you.


  • Interpret customer requirements and make engineering estimates
  • Work in your favorite IDE to develop and extend open-source software
  • Learn about the technology stacks being used to secure systems at scale
  • Communicate and present your accomplishments in small group meetings
  • Write helpful and complete documentation for technical end-users
  • Work with the open-source developer community to guide and support the adoption of our contributions
  • Code review the work of your peers to assure quality, security, and performance
  • Write about and present your accomplishments to the community
  • Travel within the US to customer locations is an occasional opportunity, but not required


  • Experience working on a professional software engineering team
  • Attracted to learning new technologies and codebases
  • Experience developing macOS and iOS applications in Swift and Objective-C
  • Experience with Apple's low-level security APIs: Endpoint Security Extensions, Network Security Extensions, KAuth, MACF
  • Quick to collaborate and participate in discussions
  • Share our interest in secure software development
  • Comfortable settings your own goals and taking charge of your projects
  • Familiar with the Git (and Github) workflow for development
  • Proficient in one or both of the most needed programming languages: C++, Python. Experience with Go-lang is a plus, but not required.
  • Comfortable contributing to cross-platform software and supporting multiple operating systems
  • Able to design and implement practical solutions that balance usability, maintainability, and performance
  • Adept at writing and interacting with customers. We highly encourage all engineers to get regular face-time with customers, to write company blog posts about their accomplishments, and to deliver presentations to the technical community.


  • Our workforce is 50% remote. Many employees choose to work from home. As long as you keep delivering good work, we keep our hands off your personal style and let you manage your work day as you work best.
  • Liberal expense policy for acquiring the equipment and software that help you do your job. If we need hardware, we buy it. Everyone has rack space and corporate cards.
  • We can tell you exactly what projects you'll work on and the people you'll work with. If it's not what you want, no need to initiate a lateral transfer, we can shift your work without an issue.
  • Every year, we pay for the best in conference training, technical training, and managerial classes for our team. Everyone is encouraged to identify additional opportunities for personal professional growth.
  • We routinely highlight the work our employees are specifically paid to do via our blog, product offerings, and conference talks. We talk about more than just side projects.
  • We're at the forefront of a number of markets and have the internal expertise and the ambition to capitalize on those opportunities. See your work in use and valued by many others.

Benefits for Eligible US Employees

  • Multiple generous health, vision, and dental insurance plans including no-monthly-premium options supporting individuals and families through JustWorks
  • Ancillary benefits including life and disability insurance, pre-tax commuter benefits, free Citi Bike membership, access to a HealthAdvocate, a healthcare Flexible Spending Account (FSA), and a free One Medical membership
  • 3-4 months paid parental leave
  • 401k with 5% company matching through Betterment
  • Moving expenses: $5k one-time
  • Charitable donation matching up to $2,000
  • Bonuses for recruiting, public speaking, tool releases, blog posts, academic posters, proposals, and whitepapers, and end-of-year bonuses based on company, team, and personal performance
  • 14 company holidays and four weeks of Paid Time Off (PTO)

Benefits for Eligible Canadian Employees

  • Premium health, vision, and dental insurance plans
  • Life/AD&D Insurance options, as well as short- and long-term disability insurance plans
  • RRSP plan with 5% company matching
  • Charitable donation matching up to USD$2000
  • Bonuses for recruiting, public speaking, tool releases, blog posts, academic posters, proposals, and whitepapers, and end-of-year bonuses based on company, team, and personal performance
  • 14 company holidays including provincial statutory holidays and select US holidays
  • 2 weeks of Paid Time Off (PTO) and 2 weeks of sick time per year 

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Trail Of Bits is Hiring!

Date Posted


HQ Location

New York, New York

Salary Range:


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