Back End Developer

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About the client
The client is a global software platform that powers collaboration for millions of developers. Their team focuses on enabling secure, reliable, and scalable authorization systems. They are modernizing their architecture from a monolithic system to distributed microservices, with a strong culture of collaboration, proactivity, and delivering high-impact features in fast sprint cycles.
About the role
We are looking for a Senior Backend Engineer (Authorization Platform) with deep expertise in Go and enterprise-scale systems. This is a high-impact role contributing to the large-scale migration of authorization logic from a Rails monolith into Go-based microservices, while designing secure, performant, and observable systems.
You will take technical ownership of critical services, collaborate across distributed teams, and be expected to deliver production-ready code quickly.
Responsibilities
Design, develop, and deploy features for the Go-based authorization microservices.
Lead migration of authorization logic from a Ruby on Rails monolith into standalone Go services.
Architect scalable and secure authorization flows (RBAC, ABAC, deny-by-default).
Ensure observability: implement logging, metrics, and tracing for reliability.
Collaborate closely with other engineering teams to ensure seamless integrations.
Participate in sprint rituals (standups, planning, demos) and proactively own tasks from the backlog.
Document decisions and share knowledge to improve cross-team collaboration.
Must-Have Skills & Experience
10+ years of professional backend development experience in enterprise-scale systems.
7+ years of production experience with Go (Golang) – strong command of idioms, concurrency, and microservices architecture.
Hands-on Ruby on Rails experience, especially with reading/modifying code during migrations.
Deep knowledge of authorization models (RBAC, ABAC) and security best practices (deny-by-default, audit logging).
Strong experience with MySQL or other relational databases.
Observability practices: metrics, logging, tracing.
Ability to ship a production-ready pull request within the first two weeks.
Excellent communication skills – structured, clear, and able to explain technical trade-offs and architectural choices.
Nice-to-Have Skills
Experience with Kubernetes and CI/CD (GitHub Actions).
Familiarity with observability tools (Datadog, OpenTelemetry, Prometheus).
Experience in large-scale distributed systems.
Knowledge of Go authorization frameworks (OPA, Casbin, Authzed).
Conditions
100% Remote role, with a 5-hour overlap required with UTC-4 (Eastern/Central Time).
Contractor role – 12-month contract, renewable.
Full-time dedication (40 hours/week).
Device provided by the client (no BYOD).
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