Senior Software Engineer

On-site
Posted Sep 24, 2026
1 position

US$30–US$100 / hour

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Employment type: Contract
Experience level: Senior · 5+ years
Posting language: English
Working hours: 40 hours per week
Seniority: Mid-Senior level
Application method: Direct apply is available

Job summary

Develop and maintain scalable backend services and APIs while ensuring high performance and stability. Identify and resolve software bugs and system bottlenecks through debugging and codebase refactoring.

Job details

Senior Software Engineer [$30 - $100/hour] Looking For Strong backend experience in Java, Node.js, Go, Rust, Typescript, Python, C++ or similar A track record building scalable services and APIs Comfort with debugging, performance work and automated testing Solid code review instincts A cybersecurity or SecOps background is a big plus secure coding, appsec, pentesting, vulnerability assessment, OWASP/CWE, or security-focused reviews Good Candidature Proven experience in backend development, with a track record of delivering high-quality and performant projects Background in cybersecurity, such as penetration testing, vulnerability assessment, or security code reviews Demonstrated success in identifying and resolving software bugs and system bottlenecks Experience with codebase refactoring and implementing complex features in large-scale applications Strong understanding of algorithms, data structures, and foundational computer science concepts Excellent analytical, problem-solving, and technical communication skills Compensation Structure Compensation is output-based; experts are paid per task that meets the project specifications. The time required to complete work may vary depending on the expert s experience and workflow. Minimum submission requirements apply. Experts must submit a minimum of tasks per week.

What you’ll do

Requirements

Requires strong backend experience in languages like Java or Python and a proven track record of delivering high-quality projects. A background in cybersecurity, including appsec and vulnerability assessment, is highly preferred.