Senior Go Engineer – Open-Source MongoDB Tools (Remote)

Percona; Warszawa; On-site; PLN 448,000 - 672,000; Full time

Job summary

Percona's MongoDB Tools Team is seeking a strong Go developer to help build PCSM and PBM, focusing on data replication, change streams, and backup tooling. You will work on challenging problems in a fast-moving, remote-first environment and contribute to open source projects.

You will collaborate across teams, implement robust tooling, and help ensure data consistency and reliability at scale in large production deployments.

Qualifications

• Strong Go experience in production with fluency in concurrency (goroutines, channels, context cancellation, worker pools, backpressure).
• Solid grounding in distributed systems and data consistency (at-least-once vs exactly-once, idempotency, ordering, resumable).
• Hands-on MongoDB knowledge: change streams, the oplog, resume tokens, replica sets, and sharding.
• Comfort building and operating command-line tools and HTTP APIs, with metrics and structured logs.
• Habit of writing tests and working across a mixed toolchain.
• Experience working in the open: Git and pull request workflows, clear written communication with contributors.

Responsibilities

• The core replication engine: initial collection cloning followed by continuous change capture via Change Streams.
• Ensure correctness and fault tolerance at scale; recover from network drops and failures without data loss or duplication.
• Support sharded clusters and namespace filtering; handle DDL, TTL, and index differences.
• Optimize performance and memory/connection usage for large production clusters.
• Develop and observe CLI and HTTP API, with comprehensive metrics and logging.

Skills

Go programming

Distributed systems

MongoDB knowledge

CLI tools

HTTP APIs

Testing

Open source

Code review

Tools

Git

JIRA

Job description

Percona's MongoDB Tools Team is seeking a strong Go developer to help build PCSM and PBM, focusing on data replication, change streams, and backup tooling. You will work on challenging problems in a fast-moving, remote-first environment and contribute to open source projects.

You will collaborate across teams, implement robust tooling, and help ensure data consistency and reliability at scale in large production deployments.