Senior Full-Stack Engineer-AI Incubator Team (F/M/X)

About us

At ablefy, we believe that passion can turn into a career for anyone! With our cloud-based SaaS platform solution, ablefy.io, we offer an easy and efficient way for everyone to create and sell digital products and online courses. More than 70,000 entrepreneurs have already placed their trust in our expertise!

Our story began in 2015, and for the first five years, we grew organically, becoming a profitable company with a team of around 60 employees. Then, in September 2021, we raised $38 million in series A funding led by Target Global, with participation from Partech Ventures and Avid Ventures. Since then, we've doubled in size!

Since then, our company size, products, features, and services have doubled and we have become Germany's No. 1 platform for coaches, consultants, speakers, and service providers. We continue to grow to this day – that's why we're looking for you.

Mission

to build software that empowers everyone to start, run and grow a successful digital business - borderless

Core principles

• Radical Collaboration
• Constructive confrontation
• Adaptive execution
• Collective ambition
• Evolving expertise
• Empathetic leadership

Diversity & Inclusion

At ablefy, we embrace our differences, as they are our greatest strength. We recognize that everyone has a unique perspective based on their experiences, identities, and thought processes, and we strive to create an inclusive environment for all. Discrimination based on race, religion, color, national origin, gender identity or expression, sexual orientation, age, marital status, disability status, or any other aspect that makes you unique is not tolerated at ablefy. We aim to make growth accessible to everyone!

We know that no candidate checks every single box, and that’s okay! If you’re excited about this role and think you can bring something valuable to our team, we encourage you to apply—even if you don’t meet every requirement. We’d love to hear from you!

Description

We're building something bold inside ablefy — a fast-moving AI Incubator team focused on launching entirely new products that drive revenue beyond the core. Think of it as a startup within a scale-up: small, empowered, and business-first.

As our Full-Stack Engineer , you'll help shape 0→1 products where AI meets commerce — with direct impact on seller success, customer journeys, and our bottom line. You’ll work side by side with product, design, and growth leads who move fast, love shipping, and are obsessed with finding signal in noise.

Responsibilities

• Build & Ship Greenfield Products
  • Take ownership of new product development from concept to production, working in a fast-moving incubator environment.
  • Architect and implement full-stack features using Next.js, delivering both frontend experiences and robust backend services.
  • Deploy and maintain systems on Vercel/AWS, including CI/CD pipelines and monitoring.
• Backend Engineering Excellence
  • Design and build scalable APIs with proper service architecture, understanding patterns like dependency injection, transactions, and idempotency.
  • Optimize for serverless constraints—implementing background job processing, caching strategies, and avoiding common scalability pitfalls.
  • Work with PostgreSQL and ORMs, writing efficient queries and understanding when to use transactions.
• Collaborate & Iterate
  • Partner closely with product, design, and growth to rapidly test hypotheses and ship improvements.
  • Integrate AI-powered capabilities where they create tangible user and platform value.
  • Connect technical decisions directly to business outcomes and MRR goals.

Requirements

• 5+ years of professional software development experience with strong JavaScript/TypeScript expertise.
• Deep Next.js knowledge beyond the frontend—you understand App Router, Server Components, caching strategies, and the full-stack capabilities of modern Next.js.
• Solid backend engineering fundamentals: you can explain and implement concepts like idempotency, rate limiting, dependency injection, and database transactions.
• Hands‑on experience with relational databases (PostgreSQL preferred), including query optimization and ORM patterns.
• Comfortable with serverless architecture—you understand the constraints and patterns for building scalable applications on platforms like Vercel.
• Entrepreneurial mindset with strong product ownership; you connect technical work to business outcomes.
• Clear communicator who thrives in collaborative, cross‑functional teams with shifting priorities.

Nice to Have

• Experience with tRPC or similar type-safe API frameworks.
• Background job processing experience (Inngest, BullMQ, or similar).
• Prior work with LLMs, vector databases, or building AI-powered features.
• Python experience for AI/ML integrations.
• E-commerce, SaaS, or FinTech domain experience.
• Contributions to open-source or prior incubator/startup experience.

Benefits

• Paid Time Off – 30 vacation days.
• A competitive salary.
• A personal training & development budget of € 1,500 per year.
• Responsibility and trust from day 1.
• Individual coaching and further training to support you in your development.
• A free BVG ticket.
• Employee discounts at numerous companies (e.g. at the gym or in online stores).
• Pension Program with company match.
• A Culture of equity and Inclusion where you are appreciated for the person you are.