Senior Full Stack Software Engineer

Proof Holdings, Inc.

Full Stack Software Engineer building and maintaining Proof's digital trust transactions platform. Collaborating with cross-functional teams to deliver high-performance, secure web applications.

Posted 6/4/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $150,000 - $190,000 per yearWebsite

Tech Stack

Tools & technologies

CloudReactRubyRuby on Rails

About the role

Key responsibilities & impact

Collaborate with Product and Network and Agent Experience team engineers to design, create, and maintain features for Proof's customers and users
Write quality code with a high degree of autonomy, meeting standards for performance and reliability
Use AI tools in your day-to-day coding, review, and deployment processes to work more effectively and deliver a quality experience for our customers
Drive project scoping activities and discussions around requirements and trade-offs
Troubleshoot complex technical issues in production, pertaining to team's areas of ownership
Drive improvements, collaboration, and best practices through code reviews and mentoring
Proactively write and maintain technical documentation
Participate in production on-call rotation several times a year, after receiving in-depth training

Requirements

What you’ll need

5+ years experience building complex, customer-facing web applications using Ruby on Rails and React
Experience with electronic signature, identity verification, or online notarization products preferred
Familiarity with regulated or compliance-heavy product environments preferred
Concern for quality and enthusiasm for writing unit and integration tests
A willingness to learn any part of the stack: back-end services, data layer, web interfaces, APIs, 3rd party integrations, cloud infrastructure and so on
Comfort with adapting to new technology and new opportunities
A sense of ownership over the code you write, from technical design through to production
Bias towards action and solutions
The ability to work independently on well-defined problems while knowing when to ask for help
Effective communication and active listening skills, with a thoughtful, collaborative approach to problem-solving

Benefits

Comp & perks

Medical, dental, and vision benefits
Life insurance, long and short-term disability coverage
401k Plan with a 4% match, beginning on your hire date
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 full time employment
Health Reimbursement Arrangements for fertility and gender affirmation
Lunch on Proof through Grubhub credit
Monthly work from home stipend
Professional development credit
Monthly reimbursement for Wellness
And more!

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

Ruby on RailsReactunit testingintegration testingAPIscloud infrastructureweb applicationsdata layer3rd party integrationstechnical documentation

Soft Skills

effective communicationactive listeningcollaborative problem-solvingownershipindependencebias towards actionwillingness to learnmentoringtroubleshootingproject scoping