Sr. Platform Software Engineer

STLabs is an AI service management platform that resolves employee requests end-to-end, grounded in a living model of the enterprise. This matters because we're able to resolve requests with full context - the people, systems, services, and policies that define how an organization actually runs. Requests that used to take days of back-and-forth resolve in minutes, right where employees already work.

We’re looking for a Senior Platform Software Engineer to build the systems, tooling, and internal platform that make engineers dramatically more productive.

This role sits at the intersection of:

• Platform engineering

• Developer experience (DevEx)

• Infrastructure automation

• Distributed systems

You’ll build the foundation that enables engineers to Ship faster, Deploy safely, Debug quickly & Operate confidently in production

This is a highly hands-on engineering role. You’ll write code, design systems, and shape how engineering works across the company.

• Build and evolve our internal developer platform (IDP)

• Create self-service tooling that makes spinning up services, environments, and infrastructure effortless

• Improve local development workflows, testing, deployment ergonomics, and developer feedback loops

• Reduce operational friction through automation and platform abstractions

• Design and maintain scalable CI/CD systems using GitHub Actions &Infrastructure-as-code workflows

• Improve: Build times, Deployment reliability & Rollback and recovery systems

• Create deployment workflows that are fast, observable, and boring in production

• Design and operate cloud-native systems on AWS, EKS, Docker & Kubernetes

• Improve platform scalability, resilience, and developer onboarding

• Define service architecture and deployment standards across the engineering organization

• Own observability across the platform using Datadog, Metrics, Logging and Distributed tracing

• Build dashboards, alerts, and operational tooling engineers actually use

• Improve reliability, performance, and operational visibility across services

• Work across core infrastructure systems including: PostgreSQL, Kafka, Redis & Temporal

• Partner closely with backend and AI engineers to improve platform usability

• Establish engineering standards and platform best practices

• Make infrastructure feel like a product, not a support function

• Experience building Internal Developer Platforms (IDPs)

• Experience in high-growth or early-stage startups

• Experience with AI/ML infrastructure

• Experience designing multi-service distributed systems

Most companies treat platform engineering as support.

We don’t. This team will define how every system is built, every engineer work and how fast we can ship. If we get this right, everything else gets easier.

As an equal opportunity employer, we don’t tolerate discrimination or harassment of any kind. Whether that’s based on race, ethnicity, age, gender identity, citizenship, religion, sexual orientation, disability, pregnancy, veteran status or any other protected characteristic as outlined by federal, state or local laws. The reasonably estimated yearly salary for this role at is: $160,000—$250,000 USD.