Lead Software Engineer Mobile App

Do you want to be the founding engineer who sets the technical bar for CoCounsel Legal on mobile? Are you the kind of engineer who is as comfortable making architecture decisions as writing production code — and who gets energy from building something brand new? If so, this role is built for you.

As Lead Software Engineer for the CoCounsel Legal Mobile App, you will be the technical anchor of a new mobile engineering team — setting the foundation for how CoCounsel Legal is experienced on iOS and Android. You will drive architecture decisions, establish engineering standards, mentor engineers on the team, and personally contribute to delivering the product, working closely with the Engineering Manager and Product to shape what gets built.

About the Role

In this opportunity as Lead Software Engineer CoCounsel Legal Mobile App, you will:

Establish the technical foundation of the CoCounsel Legal mobile app, making early architecture decisions on platform strategy (native vs. cross-platform), project structure, state management, offline handling, and CI/CD that will define how the team builds for years.

Deliver hands-on engineering contributions, writing production-quality iOS and/or Android code across core features — from the main agent chat experience to file access, authentication, and notifications.

Integrate with the CoCounsel backend, working closely with Agent Core and AI Platform teams to connect the mobile app to agent APIs, streaming responses, file and workspace infrastructure, and user context.

Define and uphold mobile engineering standards, establishing code review practices, testing approaches, performance benchmarks, and accessibility requirements for the team.

Mentor and support mobile engineers, providing technical guidance, pairing on complex problems, and helping engineers grow their skills in a greenfield environment.

Partner with Product and Design, translating requirements and designs into technically sound, performant mobile experiences — pushing back constructively when tradeoffs affect quality or feasibility.

Contribute to the broader Application Experience engineering community, sharing mobile-specific insights and patterns with peer teams building the web and desktop experiences.

About You

You’re a fit for the role of Lead Software Engineer CoCounsel Legal Mobile App if your background includes:

7+ years of software engineering experience, with significant depth in iOS (Swift/SwiftUI) and/or Android (Kotlin/Jetpack Compose) development.

Proven experience leading technical direction on a mobile product — architecture decisions, technology choices, and engineering standards — not just execution.

Track record shipping high-quality, production mobile applications to real users in a professional or enterprise context.

Experience integrating mobile apps with cloud APIs including streaming, authentication (OAuth/SSO), and file handling.

Strong sense of mobile UX quality — deep familiarity with platform conventions, accessibility, and performance expectations on iOS and Android.

Ability to mentor and elevate other engineers through code review, pairing, and design discussions.

Clear technical communicator — able to explain tradeoffs to both engineers and non-technical product partners.

Additional preferred qualifications include:

Experience with cross-platform frameworks (e.g., React Native, Flutter) and understanding of when to use them vs. native.

Background in legal tech, productivity software, or other professional-services SaaS products.

Experience building AI-powered mobile features — streaming chat interfaces, voice input, contextual actions.

Familiarity with enterprise mobile deployment (MDM, app configuration, SSO) and associated security requirements.d in the US.

#LI-SM2

What’s in it For You?

• •Hybrid Work Model: We’ve adopted a flexible hybrid working environment for our office-based roles while delivering a seamless experience that is digitally and physically connected.
• •Flexibility & Work-Life Balance: Flex My Way is a set of supportive workplace policies designed to help manage personal and professional responsibilities, whether caring for family, giving back to the community, or finding time to refresh and reset. This builds upon our flexible work arrangements, including work from anywhere for up to 8 weeks per year, empowering employees to achieve a better work-life balance.
• •Career Development and Growth: By fostering a culture of continuous learning and skill development, we prepare our talent to tackle tomorrow’s challenges and deliver real-world solutions. Our Grow My Way programming and skills-first approach ensures you have the tools and knowledge to grow, lead, and thrive in an AI-enabled future.
• •Industry Competitive Benefits: We offer comprehensive benefit plans to include flexible vacation, two company-wide Mental Health Days off, access to the Headspace app, retirement savings, tuition reimbursement, employee incentive programs, and resources for mental, physical, and financial wellbeing.
• •Culture: Globally recognized, award-winning reputation for inclusion and belonging, flexibility, work-life balance, and more. We live by our values: Obsess over our Customers, Compete to Win, Challenge (Y)our Thinking, Act Fast / Learn Fast, and Stronger Together.
• •Social Impact: Make an impact in your community with our Social Impact Institute. We offer employees two paid volunteer days off annually and opportunities to get involved with pro-bono consulting projects and Environmental, Social, and Governance (ESG) initiatives.
• •Making a Real-World Impact: We are one of the few companies globally that helps its customers pursue justice, truth, and transparency. Together, with the professionals and institutions we serve, we help uphold the rule of law, turn the wheels of commerce, catch bad actors, report the facts, and provide trusted, unbiased information to people all over the world.

In the United States, Thomson Reuters offers a comprehensive benefits package to our employees. Our benefit package includes market competitive health, dental, vision, disability, and life insurance programs, as well as a competitive 401k plan with company match. In addition, Thomson Reuters offers market leading work life benefits with competitive vacation, sick and safe paid time off, paid holidays (including two company mental health days off), parental leave, sabbatical leave. These benefits meet or exceeds the requirements of paid time off in accordance with any applicable state or municipal laws. Finally, Thomson Reuters offers the following additional benefits: optional hospital, accident and sickness insurance paid 100% by the employee; optional life and AD&D insurance paid 100% by the employee; Flexible Spending and Health Savings Accounts; fitness reimbursement; access to Employee Assistance Program; Group Legal Identity Theft Protection benefit paid 100% by employee; access to 529 Plan; commuter benefits; Adoption & Surrogacy Assistance; Tuition Reimbursement; and access to Employee Stock Purchase Plan.

Thomson Reuters complies with local laws that require upfront disclosure of the expected pay range for a position. The base compensation range varies across locations.

Eligible office location(s) for this role include one or more of the following: New York City, San Francisco, Los Angeles, and/or Irvine, CA; McLean, VA; Washington, DC. The base compensation range for the role in any of those locations is $136,000 USD - $253,000 USD.
For any eligible US locations, unless otherwise noted, the base compensation range for this role is $118,400 USD - $219,800 USD.

Base pay is positioned within the range based on several factors including an individual’s knowledge, skills and experience with consideration given to internal equity. Base pay is one part of a comprehensive Total Reward program which also includes flexible and supportive benefits