Senior / Principal Go Developer (Cybersecurity Platform)

Sigma Software

3d•Remote

About The Position

We are looking for a Senior Golang Engineer to join a high-impact cybersecurity project focused on protecting applications from automated attacks and malicious traffic. You will become part of a small autonomous engineering team working with a large ecosystem of services, including legacy and modern distributed systems. This role is ideal for engineers who enjoy technical ownership, architecture improvements, and influencing product direction through strong engineering practices. We at Sigma Software offer the opportunity to work on meaningful products used globally, collaborate with experienced engineers, and contribute to long-term platform evolution in a flexible remote environment. The project focuses on building and improving a platform that safeguards applications from automated attacks and malicious traffic. The engineering team works with approximately 35 Back-end services, combining legacy systems and modern distributed architecture. You will contribute to platform scalability, reliability, and long-term maintainability while partnering closely with product and engineering teams.

Requirements

5+ years of commercial software development experience
Strong proficiency in Golang
Strong computer science fundamentals including algorithms, data structures, and system design
Experience across the full software development lifecycle, from planning and objective-setting to delivery and support
Proven experience working with high-load, high-traffic production systems
Solid understanding of scalable and maintainable backend architecture principles
Ability to independently work with large and unfamiliar codebases
Strong analytical and problem-solving skills
Demonstrated proactive mindset with the ability to identify issues before escalation
Experience aligning technical solutions with business and customer needs
Ability to effectively communicate and negotiate technical direction with engineering stakeholders
Upper-Intermediate English level

Nice To Haves

Experience with C++, Objective-C, or Rust
Previous experience as a primary owner of a large-scale legacy system
Experience working within cybersecurity or infrastructure-focused products
Background in distributed systems and service-oriented architectures

Responsibilities

Independently own and navigate a large backend ecosystem consisting of multiple services with minimal ramp-up support
Develop and maintain backend services using Golang
Write clean, scalable, and maintainable code while actively participating in code reviews and technical discussions
Analyze legacy and unreviewed code to identify technical debt, systemic issues, and architectural risks
Proactively identify inefficiencies, gaps, and areas for improvement, proposing and implementing solutions
Collaborate with engineering and product teams to define technical objectives and execute roadmap initiatives
Advocate for architectural improvements and negotiate technical decisions with peer engineering teams
Contribute to long-term platform evolution while balancing short-term business priorities
Ensure reliability and performance of high-load production systems