HubMub
-
Haystack

Senior Full Stack Developer

Haystack
Germany · Full-time · Mid-Senior
We're working with a leading German group that develops business software, cloud services, and digital expertise. They are building an innovative banking platform seamlessly integrating finance software with features like Smart Split for sub-accounts, lending, automated payment reconciliation, and intelligent financial analyses, creating a comprehensive ecosystem beyond a mere bank account.

The Role

  • Drive the development of a business banking account within a cloud-based web application in an interdisciplinary team.
  • Work within a modern microservice architecture, ensuring smooth communication between services and contributing to tool and approach decisions.
  • Actively shape the integration of AI agents and automated workflows into work processes and product structures.
  • Take end-to-end responsibility for features, from initial idea to productive operation, with a focus on scalability and stability.
  • Foster a culture of continuous improvement, experimenting with new forms of collaboration and iterating through Inspect & Adapt cycles.

What You'll Need

  • Several years of experience building modern web applications, with expertise in React, TypeScript, and Material UI on the frontend, and Spring Boot (Java) on the backend.
  • Proven experience with relational databases (preferably PostgreSQL) and strong proficiency in AWS services (e.g., EC2, S3, RDS, Lambda).
  • Commitment to software engineering excellence, including Clean Code, Test Driven Development (TDD), and agile methodologies.
  • Solid understanding of microservices architecture and related technical challenges.
  • Excellent German language skills (at least C2 level) as it's the team's working language.

What's On Offer

  • Opportunity to significantly influence a new and innovative product technically.
  • Flexible remote work options with valued in-person team meetings.
  • Work in a modern tech stack with a focus on cloud-based web applications.
  • Contribute to architectural decisions and experiment with new tools and approaches.

Apply via Haystack today!

Key Skills

Ranked by relevance

cloud microservices spring boot typescript postgresql react java tdd aws ai s3 ui
Login to Apply
🇩🇪

Country Guide

Germany

Strong tech sector & EU Blue Card visa

Posted
Jun 15, 2026
Type
Full-time
Level
Mid-Senior
Location
Freiburg
Company
Haystack

Industries

Technology Information Internet

Categories

Engineering Information Technology

Related Jobs

3 roles aligned with this opportunity

View all jobs
View Job Details
Code Compass 🧭
Related

Fullstack Engineer (m/f/d) - Berlin / Vienna

2026-06-15

Full-time
Mid-Senior
Germany
Staffing
Information Technology
View Job Details
Code Compass 🧭
Related

Senior Software Engineer (m/f/d) - Mobile

2026-06-17

Full-time
Mid-Senior
Germany
Staffing
Information Technology
View Job Details
Haystack
Related

DevOps Engineer

2026-06-17

Full-time
Mid-Senior
Germany
Technology
Engineering