Leonard Jombo

Backend Software Engineer with production experience building REST APIs, real-time WebSocket services and relational database systems in Go.

Built

Kairo, a full-stack collaboration platform with concurrent board updates at sub-100ms latency and secure JWT/RBAC API layers for a production farm-management system at Mawora. Brings an offensive-security lens to backend engineering through API security testing, vulnerability research and secure SDLC practices. Selected for the Princeton in Kenya 2026 Global Seminar and leads cybersecurity workshops for 100+ students at Maseno University.

Software Developer Intern at Mawora Poultry Farm (2025-05 – 2025-09)

• Built and deployed full-stack farm-management applications in Go, PostgreSQL and Flutter, replacing paper-based inventory and daily-operations tracking with a single source of truth.
• Designed secure REST APIs with JWT authentication, RBAC and input sanitization; rebuilt transaction logging to remove redundant manual record-keeping.

Cybersecurity Intern at Redynox (2026-02 – 2026-04)

• Audited production REST APIs, identifying BOLA, authentication bypasses and input-validation flaws before customer exposure.
• Applied OWASP API Security Top 10 methodology across distributed microservices; documented findings and remediation patches.

Cybersecurity Researcher at HackerOne (2025-10 – Present)

• Analyze backend logic, API boundaries and access-control edge cases in vulnerability disclosure programs using reconnaissance, fuzzing and manual testing.

Cybersecurity Lead at GDSC, Maseno University (2025-09 – Present)

• Run hands-on ethical-hacking, secure-coding and threat-modeling workshops for 100+ students; organized industry cybersecurity talks.

IT Facilitator at Mulisa Education Centre (2023-01 – Present)

• Teach foundational programming and introduce cybersecurity awareness and safe digital practices to young learners.

BSc in Computer Science – Maseno University (2022 – 2026)

Global Seminar in Natural Language Processing & Technologies for Low-Resourced Languages – Princeton University (2026)