Fullstack Engineer

ARC Intelligence is building the AI native Finance OS for modern mid market corporations.

We help finance teams manage planning, forecasting, reporting, consolidation, and performance management across complex corporate structures through a single intelligent platform. By combining financial data, operational workflows, and AI, we enable organizations to automate processes, increase transparency, and make faster, better decisions.

Our vision is to become AI-native ERP system for process heavy corporations. We are starting with finance and building toward a future where AI powered software manages and automates workflows across the entire company.

Aufgaben

As a Fullstack Engineer, you’ll work closely with backend, data, AI, product, and design teams to build and improve features across our platform.

You will:

• Build Fullstack Features: Implement user-facing features using modern frameworks and connect them to backend APIs.
• Backend Development: Contribute to Python-based backend services (Django REST or FastAPI), including API endpoints and business logic.
• Frontend Development: Work on responsive, clean UI components and dashboards that surface complex financial data in an intuitive way.
• Data & API Integration: Help integrate third-party systems and product data flows into our application.
• AI Product Features: Help build adaptive systems and integrate AI-powered features into real product workflows.
• Testing & Code Quality: Write unit and integration tests, fix bugs, and participate in code reviews to maintain high-quality standards.
• Collaborate Across Teams: Work closely with product managers, designers, and engineers to translate requirements into working software.
• Turn Ideas into Code: Help move product spikes, prototypes, and technical ideas into production-ready features.

Qualifikation

This role is a good fit for strong early-career engineers as well as fullstack engineers with a few years of experience who are ready to take ownership in a fast-moving product team.

Technical Foundations

• Strong capabilities with Python backend development, ideally with frameworks such as Django REST Framework or FastAPI.
• Strong TypeScript / React experience, ideally with Next.js and API-driven frontend development.
• Understanding of REST APIs and how frontend and backend systems communicate.
• Comfortable working with SQL, relational databases, and data-driven product features.

Engineering Practices

• Experience using Git in a multi-person engineering team.
• Obsession with writing clean, readable, and maintainable code.
• Experience with testing, CI/CD, and cloud-native development.
• Comfortable working in an AI-assisted development setup, using tools like Cursor, Claude Code, or similar coding agents while maintaining strong engineering judgment and code quality.

Mindset & Soft Skills

• Curious, motivated, and eager to learn in a fast-paced startup environment.
• Comfortable asking questions, receiving feedback, and taking ownership of your work.
• Strong communication skills in English (German is a plus).

Nice to Have

• Experience building adaptive systems or integrating AI features into a product.
• Exposure to production AI systems, including agent workflows, streaming responses, evaluations, or observability tools such as Langfuse.
• Exposure to cloud platforms such as AWS, GCP, or Azure, and tools like Docker.
• Experience working in a modern monorepo setup or with CI/CD workflows.
• Interest in finance and B2B SaaS products.
• Familiarity with basic frontend design principles or UX thinking.

Benefits

• Competitive Salary with growth potential.
• Flexible Work Model (Berlin-based team).
• Modern Tech Stack: Python, Next, cloud infrastructure, and AI/ML tooling.
• Learning & Development: Learning budget, strong engineering culture, and real ownership early on.
• Great Team Culture: Hackathons, knowledge-sharing sessions, and team offsites.
• Career Growth: Room to grow into broader technical ownership as the product and team scale.

Most mid market/enterprise software was built for a world where people spend their time moving information between systems, spreadsheets, and workflows.

We believe the future belongs to AI native systems that understand business context, automate execution, and continuously improve how organizations operate.

If you are excited about creating a category defining company, thrive in high ownership environments, we would love to hear from you.