Proof is a high-growth startup transforming legal tech with a cutting-edge platform trusted by thousands of law firms across the U.S. As we continue to scale, we’re looking for a Senior Mobile Engineer to own and help drive the evolution of our React Native applications.
If you thrive in fast-paced environments, love solving complex technical challenges, and are passionate about building high-performance mobile experiences, this role is for you.
What You’ll Do
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Lead the architecture, development, and optimization of Proof’s React Native mobile applications.
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Collaborate closely with backend engineers, product managers, and designers to create seamless, high-impact user experiences.
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Optimize app performance, identifying and resolving bottlenecks, memory issues, and platform-specific challenges.
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Implement best practices in mobile engineering, conducting thorough code reviews and mentoring team members.
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Stay ahead of the curve by researching and integrating emerging technologies to improve our mobile stack.
What You Bring
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5+ years of mobile development experience, including 3+ years in React Native.
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Deep expertise in mobile architecture, performance optimization, and platform-specific development (iOS & Android).
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Strong proficiency in JavaScript & TypeScript, with experience integrating native modules.
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A product-focused mindset, with a deep understanding of UX, engagement, and performance.
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Experience with RESTful APIs, GraphQL (nice to have), and backend performance optimization.
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Familiarity with mobile CI/CD pipelines, automated testing frameworks, and app store submission processes.
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A self-starter who thrives in an agile, high-growth environment with excellent communication and collaboration skills.
Bonus Points
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Experience with Expo Application Services (EAS).
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Background in scaling mobile applications.
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Experience mentoring engineers or leading technical initiatives.
Why Join Proof?
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Full-time, remote role (Canada-based).
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Competitive salary: $150,000 - $170,000 CAD.
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Flexible time off & holidays to support work-life balance.
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Comprehensive benefits, including healthcare, dental, life, and long-term disability.
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Top-tier equipment & tools to set you up for success.
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A strong engineering culture that values autonomy, ownership, and impact.
If you’re excited about shaping the future of legal tech and building world-class mobile experiences, we’d love to hear from you!
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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.
