Senior Go Developer

OLSYS Ltd provides full-service solutions for mid-market and enterprise organizations.

As an enterprise software development company, we are building long term partnerships helping our clients accelerate their digital experiences with reasonable IT investments.

Our tailored approach, e-commerce focus, and flexible solutions allow us to design, develop, and deliver scalable, integrated commerce platforms that drive profits and boost the business.

17+ years of experience, 100+ projects, 200+ specialists.

About the Opportunity:

We are looking for a super-star Senior Go Developer to join one of our client`s VIP customers in the cybersecurity industry. This is a high-impact project requiring top technical expertise, strong backend foundations, and experience with distributed systems and networking.

Please note that this position requires occasional visits the Warsaw office per project needs.

Requirements:

• 5+ years backend engineering experience
• 3+ years of commercial Go development
• Hands-on experience with distributed systems
• Strong understanding of networking, protocols, concurrency
• Security mindset; exposure to cybersecurity concepts
• Experience building scalable, high-availability systems

Nice to have:

• Knowledge of cybersecurity tooling or secure development lifecycle
• Experience with Docker / Kubernetes
• Cloud platforms (AWS, GCP, Azure)
• Experience working with EU/US teams or enterprise clients

Soft Skills:

• Strong and clear technical communication
• Ability to work independently and proactively
• Ownership mindset
• Attention to detail and high engineering standards
• Ability to integrate into a high-performing senior engineering environment

English level: Upper intermediate

Responsibilities:

• Develop and maintain backend components in Go for high-performance, security-oriented systems
• Work with distributed architectures and networking-heavy environments
• Collaborate with experienced engineers across EU teams
• Contribute to architectural decisions and performance optimization
• Implement secure coding best practices
• Participate in code reviews, technical discussions and improvements
• Occasionally visit the Warsaw office per project needs