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Full Stack Developer - Java & React (f/m/d)

ecosio

Cologne, DEonsitePosted May 26, 2026

Skills

elasticsearchspringkubernetesprometheusjavascripttypescriptcassandrabootstrapmongoangulargrafanaredisreactjunitjavaawsvue

About the role

Company Description

ecosio is a fast-growing, innovative service company and a leading provider of B2B integration, specialising in electronic data interchange (EDI), Web EDI and e-invoicing. ecosio is part of Vertex, Inc., a leading global provider of indirect tax solutions listed on Nasdaq (VERX).

Our brand slogan is Connections That Work as we believe strong connections are central to successful business relationships - both external and internal. At ecosio, we hire individuals from all backgrounds and are committed to creating an inclusive work environment. We are technology lovers, set the highest standards for our solutions, and put innovative ideas first.

Job Description

You'll connect with the role if you enjoy...

Develop and maintain features for our web applications

Take ownership of features, from ideation to deployment and ongoing maintenance

Write comprehensive unit tests to ensure code quality and reliability

Follow secure coding practices to protect our systems and user data

Collaborate closely with product owners to translate requirements into actionable features

Build efficient systems that enhance the productivity of our Onboarding & Operations team

Work with Java / Spring in the backend and TypeScript / React in the frontend

Our current tech stack in the Web Application Team is:

Infrastructure: AWS, Kubernetes, ArgoCD

Java frameworks: Spring, SpringBoot, Apache Camel

Java libraries: JUnit

TypeScript / JavaScript libraries: React, Material UI, Semantic UI, React Final Form, TanStack Query, React Testing Library

Data storage and querying: MongoDB, Cassandra, Redis, Elasticsearch

Monitoring: Prometheus, Grafana

Qualifications

To connect with ecosio it is important to have…

experience in the field of computer science or engineering

several years of work experience in the software development of enterprise web applications

professional experience with JavaScript/Typescript and popular frameworks like React (Angular or Vue are also acceptable)

relevant work experience with Java 11+, Spring / Spring Boot

good knowledge in software design (e.g. design patterns)

a good command of written and spoken technical English

And nice to have...

relevant knowledge of design systems (material UI, semantic UI, bootstrap, etc)

an in-depth understanding of NoSQL DB systems (MongoDB, Elasticsearch, Redis)

Additional Information

By connecting with us you will experience...

Our remote-first culture lets you work remotely from one of our designated countries

Flexible working hours to suit your schedule and priorities

Annual personal development budget to invest in conferences, courses, or career coaching

Home office allowance to create a workspace that fits your needs

Regular events and trips to connect, celebrate, and have fun with the team

Workations of up to 90 days per year within the EU, combining travel and productivity

Wellbeing support, including mental health resources and employee assistance programs

Additional country-specific benefits based on your location

As part of our hiring process at ecosio, we conduct standard background checks. You can find more information about them by clicking HERE.

Our mission is to build Connections That Work by fostering a diverse and inclusive team. We are committed to making everyone feel valued and empowered to contribute their unique skills, experiences and perspectives. And now we want to connect with you

Questions about this role

  • How do I apply to this Full Stack Developer - Java & React (f/m/d) role at ecosio?

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  • What's the typical salary for Frontend Engineer in Germany?

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