We are Cybergizer
Cybergizer is a software development and product engineering company. Founded in 2016 by leaders of the Eastern European Ruby community, Cybergizer empowers startups at all stages — from building MVPs for early-stage ventures to helping growth-stage companies scale and thrive. We specialize in web development with Ruby on Rails, system design, AI/ML/LLM-powered application development, testing, DevOps, and MLOps. With a 100% remote model, we hire the best global talent, contributing actively to the Ruby ecosystem by supporting developer communities, hosting the BalticRuby conference, and running Rubizza school for junior developers.
Open positions
Senior Ruby on Rails Developer
Location: remote work from any country except Russia and Ukraine

Role Overview: We are looking for a seasoned Senior Ruby on Rails Developer to join our dynamic team. The ideal candidate will have a solid background in Ruby on Rails development, but also keen interest in working with optimizing performance of web apps, background jobs and large databases.

Key Responsibilities: Identify and solve performance bottlenecks. Use APMs with high traffic Ruby on Rails applications to ensure stability and scalability. Propose partitioning, sharding and replication solutions. Introduce and utilize caches to improve throughput. Maintain quality and work closely with the infrastructure team to ensure optimal use of resources.

Requirements:
  • 5+ years web application backend development experience on Ruby on Rails.
  • Knowledge of BI databases (especially Clickhouse).
  • Strong problem-solving skills and attention to detail.
  • B2-C1 level of English.

The project: a fast-growing B2B SaaS product in its growth stage, aiming to empower people to have their most productive workdays. Specializing in tools for companies with remote teams of various sizes and industries, our global team of over 100 people in 30+ countries thrives on a remote culture with healthy coworker relationships.
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