Senior Full-Stack Engineer

Keplaris; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Keplaris is seeking an engineer to build and operate production software across internal products and client projects. You will move from early technical decisions through launch and ongoing support, spanning backend services, data and infrastructure, and customer-facing web experiences.

You will own outcomes, stay close to platform performance in real use, and collaborate directly with clients, designers, and teammates to explain decisions and trade-offs while maintaining high-quality code and

Qualifications

• Experience delivering production-grade TypeScript/Next.js/Node.js applications.
• Practical PostgreSQL expertise including schema design and indexing.
• Experience operating production software and monitoring systems.
• Ability to move between backend, infrastructure and frontend work.
• Clear written and verbal communication and readable code with tests.

Responsibilities

• Develop and run API endpoints, data pipelines, dashboards, and supporting infra.
• Lead client projects through scoping, architecture, implementation, launch and follow-up.
• Monitor production systems, respond to issues, improve reliability and performance.
• Work across product and client needs from backend to web applications.
• Collaborate with clients, designers, and teammates, explaining decisions and trade-offs.

Skills

TypeScript

Next.js

Node.js

PostgreSQL

System reliability

Full-stack workflow

Job description

Role overview

Build and operate production software across internal products and client projects, taking work from early technical decisions through launch and ongoing support. The role spans backend services, data and infrastructure, as well as customer-facing web experiences; engineers are expected to own outcomes and stay close to how systems perform in real use.

Responsibilities

• Develop and run API endpoints, data pipelines, dashboards, and supporting infrastructure.
• Lead client projects through scoping, architecture, implementation, launch, and follow-up.
• Monitor production systems, respond to operational issues, and improve reliability and performance.
• Work across product and client needs, from backend services to web applications.
• Collaborate directly with clients, designers, and technical teammates, explaining decisions and trade-offs.

Requirements

• Strong experience with TypeScript, Next.js, and Node.js.
• Practical PostgreSQL expertise, including schema design, indexes, query plans, and database troubleshooting beyond ORM use.
• Track record of operating production software, including monitoring systems and learning from incidents.
• Ability to move between backend, infrastructure, and frontend work while maintaining quality.
• Clear written and verbal communication, sound technical judgment, and a habit of writing readable code and testing important behavior.
• Comfortable deciding when to build, adopt an existing tool, or simplify a system.

Benefits and work setup

• Full-time, remote role for candidates in the United States.
• Small team with direct collaboration and ownership of work from initial decisions through production operation.
• Competitive pay and the opportunity to shape engineering practices as the team grows.