Senior Full Stack Software Engineer

About Proof

Proof is the world's first identity-assured transaction management platform, aiming to digitize trust for critical transactions. Building on the success of notarization pioneers, Proof verifies identities and secures transactions, protecting businesses and customers. Since 2015, Proof has facilitated groundbreaking digital commerce transactions, including the first online real estate closing, mortgage closing, auto sale, and will, and is poised for further innovation.

Role Overview

We are seeking an experienced Full Stack Software Engineer to contribute to the development and maintenance of Proof's products. This role involves close collaboration with cross-functional teams to deliver high-quality, reliable features for our customers.

What You'll Do

• Collaborate with Product, Network, and Agent Experience teams to design, build, and maintain customer-facing features.
• Write high-quality code autonomously, adhering to performance and reliability standards.
• Leverage AI tools to enhance daily coding, review, and deployment processes.
• Drive project scoping, requirements discussions, and trade-off analyses.
• Troubleshoot and resolve complex production technical issues within the team's ownership areas.
• Improve processes, foster collaboration, and uphold best practices through code reviews and mentoring.
• Proactively create and maintain technical documentation.
• Participate in production on-call rotations after thorough training.

What We're Looking For

• 5+ years of experience building complex, customer-facing web applications using Ruby on Rails and React.
• Experience with electronic signature, identity verification, or online notarization products is preferred.
• Familiarity with regulated or compliance-heavy product environments is preferred.
• Commitment to quality and a passion for writing unit and integration tests.
• Adaptability and eagerness to learn all parts of the technology stack: back-end services, data layer, web interfaces, APIs, third-party integrations, and cloud infrastructure.
• A strong sense of ownership over code, from technical design to production deployment.
• Bias towards action and solution-oriented problem-solving.
• Ability to work independently on well-defined problems and seek help when needed.
• Effective communication and active listening skills, with a collaborative approach to problem-solving.

You'll Really Stand Out If You Have

• Experience with GraphQL and AWS.

Our Tech Stack

• Back-end: Ruby on Rails, Postgres SQL, Redis, hosted on AWS.
• Front-end: React, GraphQL, Apollo, and TypeScript.

Our Engineering Culture

Proof emphasizes mentorship through regular 1:1s, reviews, and check-ins to support engineer learning and growth. Managers assist in setting personal goals and tracking progress. You'll join a small, cross-functional team with a highly collaborative process that values clear communication across the organization. As a startup with ambitious plans, we tackle challenges—from legal processes to code quirks—with a drive to improve and innovate.

Proof Pillars

• Pave the Way: Overcome obstacles with passion and perseverance, leading with creativity to set new standards.
• Own It: Embrace responsibility for critical transactions, relentlessly pursuing solutions with a positive attitude.
• Act with Integrity: Maintain honesty and transparency, owning mistakes and ensuring security and compliance.
• Play to Win: Strive for excellence, learn from mistakes, and collaborate to achieve collective success.

Benefits

• Medical, dental, and vision benefits
• Life insurance, long and short-term disability coverage
• 401k Plan with a 4% match
• Unlimited Sick and Vacation time
• 14 paid company holidays
• Company Chillax week
• 12 weeks of paid parental leave
• 4-week sabbatical after 5 years of continuous employment
• Health Reimbursement Arrangements
• Lunch on Proof via Grubhub credit
• Monthly work from home stipend
• Professional development credit
• Monthly Wellness reimbursement

Compensation

$150,000 - $190,000 per year. This range is for the US and may vary by location. Actual offers consider skills, qualifications, experience, and other factors. Total compensation includes base pay, benefits, and equity.

Application Deadline

This position will be accepting applications through June 12, 2026.

Security & Compliance

Proof utilizes 'Identify & Defend' for fraud prevention and identity verification. This security measure ensures real identities are engaged throughout the process and is used solely for verification and fraud prevention, not for employment eligibility assessment.

Equal Opportunity Employer

Proof is committed to fostering an inclusive environment and encourages applications from all backgrounds. We are an equal opportunity employer and do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

AI in Hiring

AI tools may assist in parts of the hiring process, such as application review and resume analysis. These tools support our recruitment team but do not replace human judgment. Final hiring decisions are made by humans. For information on data processing, please contact us.

Key skills/competency

• Senior Full Stack Software Engineer
• Ruby on Rails
• React
• AWS
• GraphQL
• Web Applications
• APIs
• Cloud Infrastructure
• Identity Verification
• Transaction Management