Location: Hybrid (Munich-based team, 3 days/week in office); Workload: Full-time; Start: ASAP
About us
Hi, we are Jessy Works – an AI startup rethinking accounting from the ground up.
While accounting firms are struggling to find qualified staff, we build the solution: AI-powered accounting on autopilot.
Our AI assistants handle bookkeeping, routine workflows, and client communication – dramatically expanding the capacity of tax advisory firms.
Now we are looking for a Senior Software Engineer who wants to take real ownership, ship production-ready AI systems, and help scale a mission-critical product.
If you enjoy building stable systems, working close to product and founders, and using AI as a first-class development tool, keep reading.
Tasks
Build and own enterprise-grade AI systems that automate accounting and logistics operations at scale. You'll architect and deploy production AI agents using modern ML frameworks and Python infrastructure, running on cloud-native platforms with real-time document processing and automation capabilities. You feel fluent in transfering concepts with our AI researchers to production.
Core Technologies You'll Work With
AI & ML Frameworks
* Structured LLM programming frameworks for reliable AI agent development
* Multi-provider AI integration supporting major cloud AI services (OpenAI, Anthropic, etc.)
* Vector databases for production search and retrieval-augmented generation
* Distributed tracing and observability for ML operations monitoring
Backend & API Development
* Python 3.12 with modern async web frameworks for high-performance microservices
* Type-safe data modeling and validation frameworks
* Concurrent processing architectures for handling complex workflows
* Enterprise AI integration patterns and best practices
Cloud Infrastructure & DevOps
* Kubernetes orchestration on major cloud platforms
* Cloud-native services: object storage, NoSQL databases, serverless functions, email automation, OCR services
* Container orchestration with security-focused multi-stage builds
* CI/CD pipelines with automated testing and multi-environment deployment strategies
Specialized AI Applications
* Computer vision & automation for legacy system integration
* Intelligent document processing with advanced OCR and semantic analysis
* Knowledge retrieval systems for domain-specific expertise (tax, accounting, compliance)
* Multi-modal AI workflows for email, document, and structured data processing
Technical Responsibilities
Production AI Systems
* Design and implement structured AI agents for automated business process workflows
* Build knowledge retrieval systems for real-time information access and compliance checking
* Develop multi-modal AI pipelines processing diverse data types at enterprise scale
* Optimize AI model performance using advanced prompt engineering and workflow optimization
Full-Stack Development
* Build high-performance API services with comprehensive async support and type safety
* Implement vision-based automation for legacy application integration
* Create real-time document processing pipelines with advanced text extraction and analysis
* Design resilient distributed job processing systems
Infrastructure & Operations
* Deploy containerized applications on managed Kubernetes with multi-stage environments
* Implement Infrastructure-as-Code using industry-standard tools
* Build automated deployment pipelines with security scanning and validation
* Monitor production systems with comprehensive observability and alerting
Enterprise Integration
* Integrate with European accounting software and compliance systems
* Build automated email processing workflows with intelligent response generation
* Implement enterprise-grade secret management and access controls
* Design multi-tenant cloud architecture with proper security boundaries
Production Impact
You'll be building systems that:
* Process thousands of business documents daily with enterprise-grade accuracy
* Handle real-time communication workflows for logistics and accounting operations
* Automate complex interactions with legacy business applications
* Serve enterprise customers with strict compliance and security requirements
* Scale automatically with intelligent resource optimization
Required Experience
* Advanced Python with modern async frameworks and type systems
* Production ML/AI experience, preferably with LLM applications and vector search
* Container orchestration and cloud-native deployment experience
* Major cloud platform services and infrastructure management
* High-performance web frameworks and API design
Preferred Experience
* Structured AI programming frameworks and prompt optimization
* Computer vision and process automation technologies
* European business software and compliance systems knowledge
* Enterprise security and multi-tenant architecture
* Financial/accounting domain expertise
This role offers the opportunity to work with cutting-edge AI technologies in a production environment where your code directly impacts business operations and drives customer success in a highly regulated industry.
Requirements
Essential Requirements
* Senior-level experience as a Software Engineer with several years in production environments
* Expert-level Python skills - this is our primary development language
* Strong TypeScript/JavaScript proficiency for full-stack development
* Solid AI/GenAI systems background including hands-on AI inference experience
* AWS experience with serverless architectures and cloud-native development
* Infrastructure expertise with Terraform and Kubernetes (K8s)
* DevOps mindset - you build it, you run it philosophy
Technical Experience
* Experience building stable, scalable, and maintainable production systems
* At least one complete product go-live where you were actively involved
* Product launch experience and operating live systems under real user load
* Strong understanding of backend, frontend, and application architecture
* Windows OS session management knowledge for desktop automation workflows
* Java experience is a strong plus for enterprise integrations
Working Style & Collaboration
* Proven experience in sprint planning, refinement, and agile execution
* Highly self-driven, pragmatic, and solution-oriented approach
* Ability to identify and resolve impediments independently
* Experience with cross-functional collaboration and technical leadership
Language Requirements
* German language skills at minimum C1 level (spoken & written)
* You will have direct customer contact and need to communicate technical concepts clearly
* English proficiency for technical documentation and international team collaboration
Preferred Qualifications
* Experience with accounting/financial software systems
* Knowledge of German business compliance requirements
* Background in computer vision or UI automation
* Previous work in regulated industries
Benefits
* Direct collaboration with the founding team and key decision-makers
* Ownership and real impact on a core AI product
* Very very interesting tech stack with many things freshly backed from research
* Modern tech stack, AI-first development culture, and zero legacy baggage
* A product with real customer value in a massive, underserved market
* Hybrid setup with 1+2 office days per week in Munich
* Competitive compensation and long-term growth opportunities
* Fast learning curve, high trust, and minimal bureaucracy
* And yes – we celebrate wins: pizza & champagne included 🍕🍾
How to apply
* Short CV + LinkedIn profile
* 30-minute intro call – mutual fit & expectations
* Final fit call – scope, role, and start date
No cover letter.
No corporate nonsense.
Just honest engineering, real responsibility, and building something that matters.
If you want to help shape the future of AI-powered accounting with a strong founding team – we’d love to hear from you.