Senior Product Engineer, Scalability
WFA Digital Insight
The demand for skilled product engineers who can scale systems and manage complex backend operations has grown significantly, with a 25% increase in remote job postings in 2025. Railway's unique approach to empowering software engineers with powerful tools makes this role particularly interesting. With the company's mission to make software engineers higher leverage, this role offers a chance to work on high-impact projects. Before applying, candidates should be aware of the importance of autonomous leadership, deep expertise in Postgres, and a strong working knowledge of Node.js internals in this role.
Job Description
About the Role
As a Senior Product Engineer at Railway, you will play a critical role in scaling the company's systems to support millions of builders. Your primary focus will be on designing and implementing backend systems that prioritize correctness, consistency, and auditability. You will work closely with the team to identify areas for improvement and develop solutions that meet the company's growing needs.The role entails working on high-throughput systems, including billing, fraud detection, and payment processing. You will be responsible for architecting and scaling pipelines that turn raw usage into accurate, real-time billing, as well as developing payment flows that are correct under concurrency and partial failure. Your work will have a direct impact on the company's culture, trajectory, and outcome.
The team at Railway values autonomy, and as a Senior Product Engineer, you will be expected to lead, design, and implement backend systems independently. You will work closely with other engineers to ensure that your solutions integrate seamlessly with existing systems and meet the company's high standards for quality and reliability.
What You Will Do
- Architect and scale pipelines for real-time billing and payment processing
- Develop payment flows that are correct under concurrency and partial failure
- Design and implement fraud detection and abuse protection systems
- Scale Postgres databases to handle heavy write loads
- Build TypeScript + GraphQL APIs that prioritize correctness and auditability
- Contribute to open-source repositories, including the CLI, TypeScript SDK, and Railpack
- Write Engineering Requirement Documents to take projects from idea to implementation
- Collaborate with other engineers to ensure seamless integration of your solutions
- Participate in on-call rotations to ensure the stability and reliability of the company's systems
What We Are Looking For
- Autonomous leadership and the ability to design and implement backend systems independently
- Deep expertise in Postgres and relational data modeling
- Strong working knowledge of Node.js internals, including the event loop and memory behavior
- Experience with scaling systems, including databases, services, and workflows
- Strong understanding of correctness, consistency, and auditability in backend systems
- Ability to work effectively in a remote team environment
- Excellent communication and collaboration skills
- Strong problem-solving skills and the ability to debug complex issues
Nice to Have
- Experience with Rust and a desire to learn and contribute to the company's open-source repositories
- Knowledge of Temporal and workflow orchestration
- Familiarity with ClickHouse and real-time data processing
- Experience with TypeScript and GraphQL API development
Benefits and Perks
- Competitive salary and equity package
- Flexible working hours and remote work arrangement
- Access to cutting-edge technologies and tools
- Opportunities for professional growth and development
- Collaborative and dynamic team environment
- Recognition and rewards for outstanding performance
- Comprehensive health and wellness benefits
- Generous parental leave and family support policies
- Annual budget for conferences, training, and education
- Access to exclusive company events and networking opportunities
- Flexible PTO and vacation policy
How to Stand Out
- Be prepared to discuss your experience with scaling systems and managing complex backend operations.
- Highlight your expertise in Postgres and relational data modeling, as well as your knowledge of Node.js internals.
- Showcase your ability to work independently and lead design and implementation of backend systems.
- Emphasize your understanding of correctness, consistency, and auditability in backend systems.
- Be ready to talk about your experience with open-source repositories and your desire to contribute to the company's projects.
- Demonstrate your problem-solving skills and ability to debug complex issues.
- Research the company's mission and values, and be prepared to discuss how your skills and experience align with them.
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