Senior Full Stack Engineer, AI-First – Go / React

🕒 September 12

🌐 Poland, Georgia, +3 more countries – Remote

🇵🇱 Poland – Remote 🇬🇪 Georgia – Remote 🇷🇸 Serbia – Remote 🇧🇬 Bulgaria – Remote 🇦🇲 Armenia – Remote

⏰ Full Time

🟠 Senior

🤖 AI Engineer

👻 Ghost score 11%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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MMDSmart

WebsiteLinkedInAll Job Openings

201 - 500 employees

💼 Consulting

📣 Marketing

📦 Logistics

Consulting • Marketing • Logistics

MMDSmart is a leading global cloud communications provider, offering high-quality voice and mobile messaging services through a robust CPaaS platform. They serve enterprises of all sizes, providing wholesale B2B communications solutions, including voice and SMS services, as well as retail messaging and voice services. Their product lineup features MessageWhiz, a proprietary conversion-based messaging platform, and they pride themselves on their award-winning customer service and secure APIs. With a network of partners worldwide, MMDSmart enables businesses to enhance communication with customers across various messaging platforms and call centers.

📋 Description

• Own features end-to-end across Go backend and React/TypeScript frontend • Design and develop solutions for high-load and distributed production systems • Use AI coding agents as an integral part of everyday development • Guide AI agents, review and verify their output, and take ownership of final results • Build and evolve backend services, APIs, frontend functionality, and external integrations • Investigate complex production issues and drive them to resolution • Contribute to architecture decisions, technical discussions, and system improvements • Improve the codebase and development practices for effective AI-assisted engineering • Work on cloud CPaaS/CCaaS infrastructure, including routing, messaging, and real-time communication layers for contact centres

🎯 Requirements

• 5+ years of professional software engineering experience • 4 years of strong hands-on production experience with Go • Practical experience with React and/or TypeScript • Hands-on experience with high-load and distributed production systems • Experience designing, building, and debugging production services and APIs • Hands-on experience with AI coding tools such as Claude Code, Cursor, Windsurf, Copilot, or similar, beyond simple autocomplete • Ability to use AI effectively across different parts of the stack while critically reviewing and verifying its output • Strong engineering judgement, ownership, and ability to make technical decisions independently • CCaaS / CPaaS / telecom background is a plus • Experience with WebRTC, SIP, media servers, or CPaaS APIs is a plus • API gateway and microservices integration experience is a plus • GraphQL federation experience is a plus • Kubernetes, Docker, CI/CD ownership, and infrastructure-as-code experience is a plus • Polyglot persistence and MongoDB operations experience is a plus • Internal tooling, evaluations, or automation built on LLM APIs is a plus • Open-source contributions, especially in Go, are a plus

🏖️ Benefits

• Access to mental health programs • Comprehensive medical insurance • Sports card • Strong mentorship • Variety of bonuses and corporate gifts • Free educational events and courses • English classes with native speakers • Professional development support • Choice of remote, office-based, or hybrid working format • Team-building activities • Medical insurance and sports card perks for employees located in Bulgaria