Senior Software Engineer

We're looking for a Senior Software Engineer to join our four-person engineering team and play a central role in shaping the future of our platform. You'll work across the full stack - building new features, improving existing ones, and contributing to our mobile app built in React Native.

Our current stack is PHP-based, and we are actively migrating to Node.js and React. You'll be hands-on with both the legacy codebase and the modern stack, helping us execute this transition thoughtfully while continuing to ship features our customers rely on every day.

This is a high-ownership role on a small team. You won't be waiting for tickets to be assigned - you'll be collaborating directly with product and customers to understand problems and build solutions.

What You'll Do

• Design and build full-stack features across our web platform and React Native mobile app
• Contribute to the ongoing migration from our PHP codebase to Node.js and React
• Write clean, well-tested, production-ready code that scales with our growing customer base
• Collaborate closely with the team on architecture decisions, code reviews, and technical direction
• Work directly with product and customer-facing teams to understand user needs and translate them into technical solutions
• Improve developer experience, tooling, and processes as the team grows
• Help establish patterns and best practices for the new Node.js/React stack

Do you have experience in Web applications?, * 5+ years of professional software engineering experience

• Strong full-stack development skills with hands-on experience in both backend and frontend work
• Production experience with PHP - you're comfortable working in a legacy PHP codebase and don't need hand-holding to be productive in it
• Solid experience with Node.js and modern JavaScript/TypeScript
• Experience building or contributing to React Native mobile applications
• Familiarity with React for web
• Experience with relational databases (MySQL or PostgreSQL)
• Comfort working in a small team environment where you own features end-to-end
• Strong communication skills and a collaborative, low-ego approach to engineering

Nice to Have

• Experience with large-scale codebase migrations (PHP to Node/React or similar)
• Familiarity with REST API design and third-party integrations (payment processing, mapping/routing, etc.)
• Experience with cloud infrastructure (AWS, GCP, or similar)
• Background in field service, logistics, or SaaS platforms serving blue-collar industries
• Experience with CI/CD pipelines, automated testing strategies, and DevOps practices

• Small team, big impact - You'll be engineer #5 with real influence over the product and technical direction
• Real-world impact - Our software helps essential service businesses run more efficiently every single day
• Modern stack migration - A rare opportunity to help architect a greenfield Node.js/React system while drawing on lessons from the existing platform
• Customer-obsessed culture - We build close relationships with our users and ship software that solves real problems

Pay: From $7,000.00 per month

Tank Track is the leading SaaS platform purpose-built for septic, grease trap, and portable toilet service businesses. From single-truck owner-operators to large fleets, our software helps thousands of companies across the country manage scheduling, routing, invoicing, compliance reporting, field operations, and more. We're a small, high-impact team building software for an industry that's long been underserved by technology - and we're just getting started.