Backend Developer (m/w/d) (Greater Munich Metropolitan Area, Germany)

Backend Developer (m/w/d)

Company Overview

With Tess (gotess.de) we are building the first AI-agent for SMB-accounting on top of DATEV (Germany's most widely used legacy accounting software). Leveraging LLMs and AI-powered automation, Tess empowers accounting firms close books in record speed, thereby helping accounting firms tackle an industry-wide shortage of skilled talent.

Tess 1,982 followers Software Development 11-50 employees 9 on LinkedIn tess ist der erste KI-Agent für DATEV-Buchhaltungen. tess unterstützt DATEV-Kanzleien dem Fachkräftemangel zu begegnen – und hilft KMUs dabei, das tägliche Chaos aus Belegen und Zahlungen zu sortieren. Schließen Sie sich mehr als 90 DATEV-Kanzleien und hunderten Unternehmen an, die Tess bereits vertrauen, um Ihre DATEV-Buchhaltung zu automatisieren.

Job Summary

As Backend Engineer, you’ll partner directly with Lukas, our Founder & CTO, and play a pivotal role in building the backbone of our AI-driven accounting engine. You’ll be close to the core logic, the data, the integrations — and the accounting magic.

Key Responsibilities

• Architect and expand the backend services that power document processing, reconciliation, and workflow automation
• Build reliable, high-throughput pipelines that ingest, normalize, and enrich accounting data
• Integrate deeply with DATEV and third-party financial systems
• Work closely with frontend and AI teams to deliver features end-to-end
• Own systems across their lifecycle — from design to deployment to continuous iteration
• Ensure our platform is fast, secure, resilient, and ready to scale with 10x more volume

Requirements / Qualifications

• Solid backend engineering track record building and scaling data-heavy, business-critical applications
• Strong experience with modern backend stacks
• Familiarity with databases, event-driven architectures, APIs, and distributed systems
• A strong ownership mindset — you ship, you iterate, you raise the bar
• Excellent English communication (German not required)

Location

Greater Munich Metropolitan Area, Germany, Remote: false

Salary & Benefits

• Real product ownership: Come in early and shape core platform architecture
• Senior-level mentorship: Work closely with seasoned founders and engineers
• Prime Munich HQ: Rooftop terrace, barista machine, great vibes
• Category-defining potential: Build infrastructure that could power tens of thousands of SMBs

Application Process

Apply via LinkedIn or [email protected]