Staff Full-Stack Software Engineer

It's a new day with a new opportunity at 8am!  About the role: We are looking for a Staff Full-Stack Software Engineer to help design and build scalable systems that power our products and platform. This is a senior technical leadership role where you will drive architecture decisions, lead complex engineering initiatives, and collaborate closely with product and design teams to deliver high-impact features. You’ll work across the stack, help improve engineering standards, and mentor other engineers while solving challenging problems at scale.  If you’re motivated by tackling complex technical challenges, shaping systems and architecture, and partnering closely with product and design to deliver impactful solutions, you’ll thrive in this role. This role is hired through an Employer of Record (EOR) partner in the Czech Republic. About us: At 8am, our vision is to power a world where professionals thrive. We start every day on a mission to empower professionals with the most trusted, innovative technology to deliver world-class outcomes for their clients and exceptional financial results for their business. They count on our purpose-built solutions to simplify operations, ensure compliance, and fuel profitable growth, so they can focus on their clients and do more of the work that matters. Founded in 2005, 8am™ (formerly AffiniPay) is the professional business platform built to help legal, accounting, and other client-focused professionals run stronger, more profitable businesses. Today, more than 250,000 professionals across the U.S. trust 8am to help them work smarter, serve clients better, and unlock their full potential. We have been recognized as one of Inc 5000’s fastest growing companies in the U.S. for 13 years in a row, and as a result, our teams continue to grow as well! What you'll do: Design and build scalable web applications using modern backend and frontend technologies (e.g., Rails, Node.js, React, or similar frameworks) Lead complex technical initiatives that span multiple systems and teams Define and evolve system architecture to support long-term scalability and reliability Build and maintain APIs and backend services that power product functionality Improve existing systems to enhance performance, maintainability, and user experience Collaborate with product and design teams to translate business needs into technical solutions Identify and address technical risks related to performance, security, and reliability Write high-quality, well-tested code and participate in code reviews Support production systems through debugging, monitoring, and performance improvements Mentor engineers and help raise engineering standards across teams About you: Strong experience building and shipping production web applications Experience designing and delivering large technical projects Experience building scalable backend systems and APIs Experience with modern frontend frameworks and component-based architecture Solid understanding of relational databases and SQL Strong knowledge of software design principles, testing practices, and maintainable system architecture Experience working in collaborative Agile product teams Strong communication skills and ability to work effectively with distributed teams Experience mentoring engineers or providing technical leadership Preferred location: Brno, Czech Republic Nice to have: Experience building scalable SaaS platforms Experience with frameworks such as Ruby on Rails, Node.js, or similar backend technologies Experience with React, Next.js, or other modern frontend frameworks Experience working with cloud platforms (AWS, GCP, etc.) Experience with distributed systems or event-driven architectures Experience with authentication and identity systems (OAuth, OIDC, SAML) Experience with observability, monitoring, and production troubleshooting Why join our new 8am Brno hub? Founding Team Impact: Be a founding engineer of our new Brno R&D hub. After a brief 1-6 month integration with U.S. based teams, you will help form fully autonomous, locally-led squads with clear paths to Staff and leadership roles with the exciting opportunity to collaborate face-to-face with your team in our upcoming Brno office. Drive our "AI-First" Transformation: We are building a secure, massive-scale "Unified AI Platform". Depending on your squad, you will either help architect this core infrastructure (LLM routing, RAG, agent orchestration) or build directly on top of it. Build the Next Generation of Our Platform: Help shape the systems powering products used by more than 250,000 professionals. You’ll work on complex platform capabilities across payments, workflow automation, and AI-powered features as we expand into new professional service markets. Benefits and Perks We offer a competitive, locally relevant benefits package designed to support your life in the Czech Republic while giving you access to global opportunities: Flexible Time Off (FTO) and 13 paid public holidays aligned with the Czech calendar Paid sick leave with additional support through the Czech social security system Maternity, paternity, and parental leave in line with Czech regulations, plus additional paid paternity leave from 8am Full statutory benefits , including public health insurance, social security, pension, and work accident coverage Possible performance bonus opportunities in the future and employee referral rewards Grow Your Career Access to Coursera (including Gen AI Academy) and ongoing professional development Clear growth paths, regular feedback, and opportunities for advancement What Makes 8am Different: International company environment with collaboration across Europe and the U.S. Opportunities to travel for company events (including potential U.S. visits) Engaging team culture with local events, outings, and community initiatives High-quality company swag