Proof is a high-growth startup revolutionizing legal technology with a best-in-class platform trusted by thousands of law firms across the U.S. As we scale, we're looking for a Senior Mobile Engineer to take ownership of our React Native applications, driving architectural decisions, performance optimizations, and feature development at scale.
This is an opportunity to have a major impact on a fast-moving product while working with a highly skilled engineering team. If you enjoy solving complex technical challenges, leading initiatives, and shipping polished, high-performance mobile experiences, we’d love to hear from you.
What You’ll Do
- Lead the design, development, and evolution of Proof’s mobile applications using React Native, ensuring performance, scalability, and reliability.
- Architect and optimize mobile app infrastructure, leveraging deep knowledge of iOS and Android ecosystems.
- Collaborate cross-functionally with backend engineers, product managers, and designers to deliver intuitive, high-impact user experiences.
- Enhance performance by identifying and resolving bottlenecks, memory issues, and platform-specific challenges.
- Drive best practices in mobile engineering, conducting thorough code reviews and mentoring team members.
- Stay ahead of the curve by researching emerging technologies and bringing innovative ideas to improve our mobile stack.
What We’re Looking For
- 5+ years of mobile development experience, including 3+ years in React Native, with a strong track record of building, launching, and maintaining high-quality mobile apps.
- Deep expertise in mobile architecture, performance optimization, and platform-specific development for iOS and Android.
- Strong proficiency in JavaScript and TypeScript, with experience integrating native modules.
- A product-minded engineer who understands UX, user engagement, and mobile performance.
- Hands-on experience with RESTful APIs, GraphQL (nice to have), and backend performance optimization.
- Familiarity with mobile CI/CD pipelines, automated testing frameworks, and the app store submission process.
- A self-starter who thrives in an agile, high-growth environment, with excellent communication and collaboration skills.
Bonus Points
- Experience with Expo Application Services (EAS).
- Background in scaling mobile applications
- Experience mentoring engineers or leading technical initiatives.
Why Join Us?
- Full-time, remote role (Canada-based).
- Competitive salary: $120,000 - $170,000 CAD.
- Flexible time off & holidays to support work-life balance.
- Comprehensive benefits, including healthcare, dental, life, and long-term disability.
- Company-provided equipment and tools to set you up for success.
- A strong engineering culture with autonomy, ownership, and impact at its core.
If you're passionate about crafting exceptional mobile experiences and want to be part of a high-performing team in a fast-growing startup, let’s talk.
Top Skills
What We Do
Proof is revolutionizing service of process.
Proof is a legal technology company that instantly connects law firms with independent process servers nationwide. Law firms can create electronic serve requests 24/7, receive live updates, see mapped verification of all attempts, and connect directly to servers in real time.
Proof’s technology provides electronic time and date stamped proof that your serve was performed successfully plus a notarized affidavit from the server.
Proof offers 1, 3 or 7 day service nationwide as well as internationally.
.png)
.jpeg)
.png)
