Back-End-Entwickler:in

Tess; München; Hybrid; EUR 60,000 - 80,000; Full time

Benefits offered by this job

Real product ownership

Senior-level mentorship

Category-defining potential

Job summary

A pioneering tech firm in Munich is seeking a Backend Engineer to build and expand its AI-driven accounting platform. The role involves architecting backend services, integrating with financial systems, and ensuring scalability. The ideal candidate has a solid track record in backend engineering and experience with data-intensive applications. This full-time position offers mentorship from seasoned professionals and the opportunity to shape the platform's core architecture, influencing the operations of thousands of SMBs.

Qualifications

• Proven experience building and scaling data-heavy applications.
• Ownership mindset focused on iteration and quality.
• Ability to work in a collaborative environment.

Responsibilities

• Architect and expand backend services for document processing.
• Build reliable pipelines for accounting data.
• Integrate systems with DATEV and third-party platforms.
• Collaborate with frontend and AI teams.
• Own systems from design to deployment.
• Ensure platform scalability and security.

Skills

Solid backend engineering track record

Strong experience with modern backend stacks

Familiarity with databases, event-driven architectures, APIs, and distributed systems

Excellent English communication

Job description

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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.

📈We are growing extremely fast: We already serve >100 accounting firms, >600 bookkeepers and process >5,000 invoices per day.

Backend Engineer

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. You will:

• 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

What You Bring

• 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)

What We Offer

• Real product ownership: Come in early and shape core platform architecture
• Senior-level mentorship: Work closely with seasoned founders and engineers
• Category-defining potential: Build infrastructure that could power tens of thousands of SMBs

Apply via LinkedIn or [e-mail] 🚀

Seniority level

• Mid-Senior level

Employment type

• Full-time

Job function

• Engineering and Information Technology
• Software Development

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