---
title: 'Fullstack Engineer / AI Engineer for BRAIINS MANAGER at Braiins'
canonical: 'https://feeny.ai/job/fullstack-engineer-ai-engineer-for-braiins-manager-braiins-braiins-qss8eccqmk9m'
type: 'job'
last_seen: '2026-10-16'
---

# Fullstack Engineer / AI Engineer for BRAIINS MANAGER at Braiins

- **Company:** Braiins
- **Location:** Braiins
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-09-22
- **Last confirmed live:** 2026-10-16
- **Apply:** https://jobs.ashbyhq.com/braiins/a567dcbe-add4-4feb-9165-6ad912be1172

## Job description

Braiins Systems · Prague or fully remote · Full-time (employee or freelance) We build the software that runs a meaningful share of the world's Bitcoin mining hardware. Alongside our flagship Braiins OS+ and Braiins Pool (the world's first Bitcoin mining pool), we build Braiins Manager — the cloud platform for remote fleet management — and the desktop tooling that goes with it. We're looking for a fullstack engineer who is equally comfortable shipping a feature end to end and building the AI tooling the rest of the team develops with. Not a prompt specialist bolted onto a product team — an engineer who happens to be very good at getting real work out of models. Do you wanna know more about Braiins? Check our [Cocuma profile!](https://www.cocuma.cz/company/braiins/)

⚙️ What you'll actually work on You'll own features across the full lifecycle: architecture and design, implementation on both sides of the wire, then troubleshooting it in production when a customer with thousands of miners hits an edge you didn't predict. The platform. A NestJS/TypeScript API on PostgreSQL, with Redis, queue-driven background work (BullMQ, Kafka) and gRPC where devices talk to us. An Angular dashboard, a React desktop frontend, and a Rust daemon in between. It all runs containerised on our own Kubernetes. The AI half. We run an internal agent platform: a shared library of agent skills and MCP servers wired into our repos, plus an orchestration pipeline that carries a product idea through discovery, design, stories and implementation with a human approval gate at each stage. Real infrastructure with real users — our own team — so it's treated like production: evaluated, versioned, observable, honest about what it can't do. You'd work on agent and tool design, MCP integrations, context engineering, retrieval over our domain data, and the evals that keep it from silently degrading. Where AI belongs in the product itself is still open, and we'd like your help answering it. You'll join an international, multidisciplinary, fully remote team, with a flat structure and short paths to a decision. 🔍 What we're looking for

- Strong TypeScript, both ends. Node.js on the server (NestJS or equivalent) and a modern SPA framework (Angular, React, Vue). Real depth on one side, genuine competence on the other — we're not looking for someone who "also touches the frontend."
- SQL that goes past the ORM. PostgreSQL, relational modeling, migrations, and the judgement to know when the query builder is the wrong tool.
- Hands-on experience shipping with LLMs. Tool/function calling, MCP, retrieval, agent orchestration, evals — any credible subset. Equally valid: you've pushed coding agents hard enough on real codebases to have opinions about where they break.
- Git, Docker, CI. The daily toolchain, not a checkbox: readable history and clean branches, a service you can containerise yourself, and a pipeline you can fix when it goes red. Kubernetes is a plus, not a gate.
- Comfort with asynchronous, distributed systems. Queues, at-least-once delivery, idempotent handlers, retries and backpressure — and what each of those costs. Microservice architecture, observability stacks, time-series or telemetry data at scale.
- REST and gRPC; a working understanding of what's underneath them.
- Tests you'd defend in review — unit and integration, and the judgement to pick.
- Debugging as a core skill. Reading a stack trace, a slow query plan and a metrics dashboard with equal comfort.
- Solid grasp of algorithms and data structures.
- English at a communicative level, and the self-direction a remote team needs.

✨ Nice to have — genuinely optional

- Rust. We have a real Rust codebase and you can go as deep into it as you want. It is not a requirement and not something we screen on — if you come from C, C++ or Go, or simply want to learn it here, that's a welcome bonus, nothing more.
- Python — our agent orchestration tooling lives there.
- Frontend craft: design systems, accessibility, bundle and rendering performance.
- An interest in Bitcoin or active experience with cryptocurrencies.

🎉 What we offer

- Full-time position with flexible working hours, employee or freelance.
- Indefinite contract.
- For employees: 5 weeks of vacation and 3 sick days.
- Fully remote, with modern offices in the centre of Prague if you want them — relaxation room, shower, parking.
- Company events and the occasional Braiins brunch.
- A generous budget for AI tooling, and the freedom to use it properly.
- Long-term work on products used daily by industrial-scale mining operations.

Interested? Tell us what you've built — a repo, a system you're proud of, or an agent setup that actually earns its keep. We'd rather read that than a cover letter. Do you want know more about Braiins? Check our [Cocuma profile!](https://www.cocuma.cz/company/braiins/)

## About Braiins

## Company Overview
- **One-liner**: Braiins is a Bitcoin mining ecosystem company providing full-stack software and hardware solutions, including the longest-running mining pool (Slush Pool), custom ASIC firmware (Braiins OS+), and hashrate aggregation tools.
- **Entity Type**: Private (Bootstrapped)
- **Headquarters**: Prague, Czech Republic
- **Founded**: 2010 (some sources cite 2011)
- **Founders**: Jan Capek (Co-Founder & CTO)

## Core Business
- Primary industry/industries: Bitcoin mining, Cryptocurrency infrastructure, Energy management
- Target customers: B2B (large-scale mining operations, enterprise miners) and B2C (individual miners and small-to-medium businesses)
- Mission or purpose statement: "Infrastructure for bitcoin, energy, and capital. Since 2010." [braiins.com](https://braiins.com/)

## Products & Services
- **[Slush Pool (Braiins Pool)]**: The longest-running Bitcoin mining pool (since 2010), offering FPPS (Full Pay Per Share) rewards including transaction fees, with Lightning payouts and 0% fees on Braiins OS. [braiins.com](https://braiins.com/)
- **[Braiins OS+]**: Custom firmware for ASIC mining hardware that optimizes chip performance, increases bitcoin ASIC lifespan, and allows miners to mine more bitcoin at any power limit. Designed for large-scale operations. [braiins.com](https://braiins.com/)
- **[Braiins Toolbox]**: A remote management system for monitoring and controlling Bitcoin mining operations, enabling firmware updates, performance optimizations, and settings adjustments from anywhere. [braiins.com](https://braiins.com/)
- **[Stratum V2 / Hashrate Aggregation Proxy]**: Reduces data transmission between mining farms and the pool by 95%, enables parallel usage of multiple pools, and allows setting a backup pool for the entire farm. [braiins.com](https://braiins.com/)
- **[Braiins Hardware]**: Bitcoin ASIC components and hardware tools designed for harsh mining environments, sold through their shop. [braiins.com](https://braiins.com/)

## Market Standing
- **Valuation/Market Cap**: Not publicly available (private company)
- **Key Metric**: Total Funding — Not disclosed (bootstrapped/private). Headcount: 73 employees (+19.5% YoY). [LinkedIn](https://www.linkedin.com/company/braiins)
- **Notable Investors/Partners**: Not publicly disclosed (privately held)
- **Growth Signals**: Yearly headcount growth of +19.5% (adding 15 people); operates in 13 countries including the United States, Italy, Bulgaria, Brazil, and Serbia; LinkedIn followers grew +30.7% year-over-year. [LinkedIn](https://www.linkedin.com/company/braiins)

## Competitive Advantages
- **First-mover advantage**: Longest-running Bitcoin mining pool since 2010, with deep expertise in the mining ecosystem.
- **Full-stack ecosystem**: Offers integrated hardware, firmware, pool, and management software — creating a closed-loop system that is hard for competitors to replicate.
- **Technical moat**: Custom ASIC firmware (Braiins OS+) and Stratum V2 protocol give them unique capabilities in optimizing hashrate and reducing data transmission costs.
- **Global reach**: Operations across 13 countries with a distributed team, allowing 24/7 support and development.

## Strategic Focus
- **Expanding the mining ecosystem**: Continuing to develop and integrate hardware, firmware, pool, and management tools into a seamless platform.
- **Energy and capital infrastructure**: Positioning as infrastructure for bitcoin, energy, and capital — likely expanding into energy management and capital markets for miners.
- **Global talent acquisition**: Actively hiring for technical and operational roles across multiple countries, with a focus on remote work and international team growth. [braiins.com/careers](https://braiins.com/careers)

## Why Work Here
- **Remote-first culture**: "We’re looking for skilled developers to be part of our international team. You can work remotely, or join us at our headquarters in Prague." [braiins.com/careers](https://braiins.com/careers)
- **Cutting-edge tech stack**: Rust, Python, React, D3, GraphQL, Docker, Kubernetes, FPGA, bitstreams, Bitcoin, Stratum V2, and low-level hardware development. [braiins.com/careers](https://braiins.com/careers)
- **Inclusive hiring**: "Senior or junior doesn’t matter — dedication and skill is what we’re looking for. Everything you don't know, we will be happy to teach you! Students, drop outs, or aliens are welcome too." [braiins.com/careers](https://braiins.com/careers)
- **International team**: Employees from 13+ countries, with a diverse mix of technical and operational talent.
- **Active hiring**: 5 open positions as of the latest data, including IT Operations Team Lead, Embedded Linux Engineer, Technical Support, Data Engineer/Analyst, and Frontend Developer. [jobs.ashbyhq.com](https://jobs.ashbyhq.com/Braiins)
- **Notable perks**: Work on Bitcoin infrastructure, cutting-edge mining technology, and a mission-driven team focused on decentralization.

## Sources
1. [Braiins Careers Page](https://braiins.com/careers)
2. [Braiins Official Website](https://braiins.com/)
3. [Braiins LinkedIn](https://www.linkedin.com/company/braiins)
4. [Braiins Jobs (Ashby)](https://jobs.ashbyhq.com/Braiins)
5. [CB Insights Braiins Profile](https://www.cbinsights.com/company/braiins)

## Other roles at Braiins

- [BRAIINS FORGE: Product Manager](https://feeny.ai/job/braiins-forge-product-manager-braiins-braiins-r369fzhdw2jq) — Braiins
- [Technical Support](https://feeny.ai/job/technical-support-braiins-braiins-fxpaxc433wa4) — Braiins
- [Infrastructure Engineer](https://feeny.ai/job/infrastructure-engineer-braiins-braiins-7kqyn16c1bp4) — Braiins
- [Product Discovery & Prototyping Engineer](https://feeny.ai/job/product-discovery-prototyping-engineer-braiins-braiins-cxckwhbem804) — Braiins
- [IT Operations Team Lead](https://feeny.ai/job/it-operations-team-lead-braiins-braiins-sx35gr7mdm14) — Braiins