Yussuf Hersi

Software Engineer
Nairobi, Kenya • yussuf@hersi.dev • hersi.dev
GitHub • X (Twitter)

Profile

Software Engineer with expertise in building robust, scalable web applications and distributed systems. Proven track record of developing full-stack solutions, working on high-impact SaaS products, and delivering practical, high-quality software for clients and the open-source community.

Core Expertise

• Full Stack Development: Frontend and backend architecture, ensuring seamless user experiences and reliable APIs.
• Backend Architecture: Distributed Systems, Microservices (Go, Rust, Python), Scalable APIs.
• Database & Data Integration: Complex data modeling, relational databases (PostgreSQL), and search/retrieval systems.
• Performance & Reliability: System optimization, observability, and ensuring high uptime for mission-critical applications.

Professional Experience

Senior Software Engineer | Worktrace

Jan 2025 — Present

• Architected a platform for enterprise workflow discovery and documentation.
• Developed automated solutions to streamline complex operational tasks, improving team efficiency.
• Built scalable data pipelines and backend systems to process large volumes of operational data.

Founder & Lead Developer | ContextBytes

2024 — Present

• Architected a comprehensive application for processing long-form media (PDFs, Videos, Articles).
• Implemented an advanced search and retrieval system, improving content discovery accuracy significantly.
• Managed the full technical stack and product development lifecycle.

Open Source Maintainer | Golangcodes & Wasiliano

2024 — Present

• Golangcodes: Developed and open-sourced an educational website and resources for mastering the Go programming language .
• Wasiliano: Built a minimal, SMTP-first email library for Bun and Next.js, integrating Notion as a CMS for newsletters.

Founder | Pesastream

2023 — 2024

• Built a fintech SaaS platform simplifying African payments via Mpesa integrations.
• scaled the platform to handle mission-critical financial transactions with 99.9% uptime.

Key Projects

• ReadyMinute: Designed and developed a comprehensive client website focused on robust service delivery and modern online presence.
• Golangcodes: Open-source platform offering guides, resources, and tools for the Go programming community.
• ContextBytes: A learning application that transforms passive content into interactive study, leveraging an advanced tech stack.
• Worktrace Pro: Workflow discovery and automation platform built for enterprise efficiency.
• PesaStream: payment solution simplifying African payments via Mpesa integrations.
• NextDeploy: A vendor-independent deployment engine for Next.js applications using Go and Docker.

Technical Stack

• Languages: Go, Rust, Python, TypeScript, JavaScript.
• Frontend & Backend: React, Next.js, Tailwind CSS, Node.js.
• Infrastructure & Databases: Docker, PostgreSQL, Redis, Neo4j, AWS/GCP.