Senior Software Engineer | Platform Engineering

castaigroupinc; United States; Remote; USD 80,000 - 111,000; Full time

Benefits offered by this job

Equity options

Learning budget

Annual hackathon

Team-building budget

Equipment budget

Additional days off

Job summary

CASTAIGROUPINC is seeking a Platform Engineer to help design, build, and operate CI/CD pipelines used by all product teams. You will develop observability tooling and local development envs mirroring production, enabling engineers to ship faster.

You will own complex projects, work with Kubernetes, Terraform, and cloud platforms, and participate in on-call rotations. This remote-friendly role offers equity options and a learning budget.

Qualifications

• Strong software engineering fundamentals and ability to design clean abstractions.
• Production experience with Go or strong systems programming skills.
• Hands-on platform engineering covering CI/CD, IaC, Kubernetes, observability tooling, and cloud platforms.
• Experience with AI coding agents and agentic development workflows.
• Ownership of a complex project from start to finish.
• Strong debugging and performance-tuning skills.
• Excellent written and verbal English communication.
• Willingness to participate in on-call rotation.

Responsibilities

• Design, build, and operate CI/CD pipelines used by all engineering teams.
• Develop and maintain observability and monitoring tooling.
• Build local development tooling mirroring production on laptops.
• Address infrastructure friction at the root rather than with workarounds.
• Debug issues spanning CI/CD, observability, Kubernetes, and cloud infra.
• Contribute to platform roadmap and backlog.

Skills

Go programming

Systems programming

Kubernetes

Terraform

Observability tooling

English communication

Tools

Kubernetes

Helm

Terraform

VictoriaMetrics

Grafana

Loki

Tempo

AWS

GCP

Azure

Job description

Role overview

A Platform Engineering team builds and maintains the internal tooling that lets product engineering groups ship code reliably without becoming infrastructure experts. The mission is to provide paved roads: CI/CD pipelines that work out of the box, default observability, and golden paths that replace reinvented wheels. Because the platform serves every engineering team, it must be fast, correct, and dependable at scale.

Responsibilities

• Design, build, and operate the CI/CD pipelines through which every engineering team ships services.
• Develop and maintain observability and monitoring tooling so other teams can debug their own production systems.
• Build local development environment tooling that mirrors production-like conditions on a laptop.
• Identify infrastructure friction across the engineering organization and address it at the root rather than with workarounds.
• Debug complex issues spanning CI/CD, observability, Kubernetes, and cloud infrastructure.
• Contribute to the platform roadmap and backlog, helping shape what gets built next for the engineers who depend on it.

Requirements

• Strong software engineering fundamentals with the ability to design clean abstractions, justify architecture choices, and write maintainable code.
• Production experience with Go (strongly preferred); strong systems programming skills in a comparable language are acceptable.
• Hands-on platform engineering experience covering several of: CI/CD and GitOps systems, infrastructure as code (Terraform), container orchestration (Kubernetes, Helm), observability tooling (e.g., VictoriaMetrics, Grafana, Loki, Tempo), and cloud platforms (AWS, GCP, or Azure).
• Experience with AI coding agents and agentic development workflows.
• Demonstrated ownership of a complex project from start to finish.
• Strong debugging, optimization, and performance-tuning skills.
• Solid written and verbal English communication and a startup mindset comfortable with ambiguity.
• Willingness to participate in on-call rotation when required.

Nice to have

• Kubernetes operators, Helm chart authoring, and admission webhooks.
• Internal developer platform design, including golden paths, self-service tooling, and service catalogs.
• Local development environment tooling such as devcontainers, Tilt, or Skaffold.
• Contributions to Kubernetes or cloud-native open source projects.

Benefits and work setup

• Remote-first environment with flexible work.
• Gross salary range of €6,500–€9,000 depending on experience, plus separate compensation for on-call participation.
• Equity options.
• Approximately 10% of work time allocated to personal projects or self-improvement.
• Learning budget for conferences and courses, annual hackathon, team-building budget, equipment budget, and additional days off.
• Fast-paced delivery cadence, with most feature projects completing in one to four weeks.