Senior Software Engineer (Golang)

We are looking for a highly skilled and technically driven Senior Software Engineer (Golang) to join a fast-paced cybersecurity environment. You will own and evolve the core applications powering an MDR (Managed Detection and Response) platform, working alongside cross-functional teams to deliver high-impact security infrastructure at scale. This is a high-visibility role with a clear path into technical leadership.

The Ideal Candidate Has

• 6+ years of software engineering experience, with at least 4+ years focused on Go development
• Bachelor's degree in Computer Science or equivalent practical experience
• Idiomatic fluency in Golang, including deep familiarity with the standard library, goroutine lifecycle management, and channel-based communication
• Expertise implementing thread-safe data structures, worker pool patterns, and memory-efficient code (heap allocation minimization, runtime profiling, buffer pre-allocation)
• Mastery of Go paradigms including interfaces and generics to build modular, maintainable systems
• Mandatory use of context for deadline management, timeouts, and structured cancellation
• Experience with continuous deployment using GitHub Actions, Docker containers, and cloud infrastructure (AWS ECS, EC2, or equivalents)
• Deep proficiency with Redis, OpenSearch (or similar), and SQL databases — including query optimization for performance and atomicity
• Solid understanding of networking protocols, TLS, and firewalls, with practical application-level security experience
• Proficiency with Git, CI/CD pipelines, automated testing, infrastructure monitoring, and observability practices
• Portfolio of delivered production systems and/or open-source contributions
• Strong communication and collaboration skills across engineering, product, and security operations teams
• Comfort with zero-downtime deployment requirements and production incident response

Key Responsibilities

• Co-own and maintain multiple Golang applications forming the backbone of the MDR platform
• Maintain and enhance a high-performance log analytics engine processing events from thousands of sources across hundreds of customers
• Maintain and evolve post-processing programs that transform engine output into actionable intelligence for SOC analysts
• Maintain and enhance a multi-tenant secure syslog server cluster that receives, buffers, and routes syslog-formatted logs
• Build and maintain a cross-platform security agent providing endpoint and server visibility for customers
• Make architectural decisions across platform applications and influence technical design reviews
• Lead and participate in code reviews, mentoring junior and mid-level engineers
• Facilitate knowledge transfer during transition periods and assist with onboarding and hiring as needed
• Develop and maintain internal SOPs and software development best practices
• Collaborate with cross-functional teams to define, design, and ship new features

Perks of Working at FusionHit

• Certified Great Place to Work, offering a supportive and inclusive culture.
• 100% Remote – work from anywhere in Latin America.
• Personal and Professional Development Courses & Certifications.
• Flexible Schedule.
• 3 Sick Days per year.
• Birthday Off.
• Extra Days for Special Occasions.
• Team Building Meal Reimbursement.