Mark Raiter

1. Jan 2026 – until now

   Software Engineer at Sombra

   Leading Real Estate Portal in the MENA Region (5.5M+ monthly users, 600K+ property listings across 6 countries)

   • Member of the Core B2B team (7 engineers), owning ~15 catalog-related services within a 200+ microservice ecosystem spanning B2C and B2B streams.
   • Maintain backend services powering a high-traffic real estate marketplace serving millions of monthly users.
   • Build scalable APIs and integrations supporting the property catalog domain.
   • Use agentic development workflows (Claude Code, spec-driven development) and custom MCP integrations to accelerate feature delivery and improve code quality.
   • Contribute to performance optimization, reliability improvements, and feature delivery within a distributed, event-driven architecture.

   Go (Gin) / Rust (Axum) / TypeScript / React / DynamoDB / MySQL / MongoDB / RabbitMQ / AWS

2. Dec 2024 – Jan 2026

   Software Engineer - Tech Lead at Zero Task Labs (formerly Valsydev)

   Multi-Tenant B2B SaaS CRM Platform for commerce businesses (10+ tenants, processing ~12000 orders/day)

   • Led a team of 6 engineers building a multi-tenant CRM platform on a modular monolith architecture.
   • Built internal products including a client feedback service, incident tracking system, and automated incident reminder service.
   • Automated release and code review processes by building an internal AI-powered review bot.
   • Introduced spec-driven development and agentic workflows (Claude Code, MCP integrations) across the team, improving development velocity and consistency.
   • Optimized database performance, caching, and service communication.
   • Participated in architectural decisions, code reviews, mentoring, and technical leadership.

   Go (Fiber) / Rust (Axum) / TypeScript / React / PostgreSQL / Redis / Docker / Kubernetes / GCP

3. Aug 2023 – Dec 2024

   Software Engineer at WebUzvar

   • Delivered multiple greenfield projects across edtech and sciencetech domains, owning architecture design through implementation.
   • Took full ownership of features from planning to post-production monitoring and continuous improvement.
   • Improved performance and reliability of products through refactoring and monitoring enhancements.

   Go / PostgreSQL / REST / gRPC

4. Nov 2022 – Aug 2023

   Software Engineer at Freelance

   • Delivered projects across multiple domains, including landing pages, CRM systems, and Telegram/Slack bots.
   • Built and maintained backend services with REST and gRPC APIs using Go.
   • Managed full project lifecycle for clients, from requirements gathering to deployment and support.

   Go / REST / gRPC

8stars across 5 repos/ live from GitHub

• dfoxRust-based database management tool with a TUI for PostgreSQL and MySQLRust5
• ascii-rsSimple image-to-ASCII converter written in RustRust1
• workerpoolZero-dependency Go library that runs a function over many inputs on a fixed number of goroutinesGo2
• go_schedulerLightweight task scheduler for Go applications with deferred executionGo0
• go_eventmanagerThread-safe event management system implementing the publish-subscribe patternGo0

Languages

Rust, Go, TypeScript/JavaScript, Python

Back-end

Go (fiber, gin, gorm), Rust (actix-web, axum, sqlx), REST, gRPC, Postgres, Mongo, Redis, Nginx

Front-end

React, Redux, Next, CSS, Webpack, tailwindcss

Cloud

AWS, GCP, Digital Ocean

Testing

Playwright, go testing, Jest

AI-Assisted Development

Claude Code, MCP (Model Context Protocol): server development & integration, spec-driven development, agentic workflows

Tools

Git, GitHub, GitLab, CI/CD, Linux, Docker, Kubernetes, Jira... and many more

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