Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I am a Backend Software Engineer specializing in Java-based REST API development. I have experience implementing reliable backend services, relational database integration, and writing clean, maintainable code. I am seeking a long-term, 100% remote position focused on Java backend and REST API development, with a passion for scalable systems and collaborating with cross-functional teams.…

Till Spenthof

Back-End Developer, Full Stack Developer, Web Developer, +3





I am a Backend Software Engineer specializing in Java-based REST API development. I have experience implementing reliable backend services, relational database integration, and writing clean, maintainable code. I am seeking a long-term, 100% remote position focused on Java backend and REST API development, with a passion for scalable systems and collaborating with cross-functional teams.…

Available to hire

I am a Backend Software Engineer specializing in Java-based REST API development. I have experience implementing reliable backend services, relational database integration, and writing clean, maintainable code.

I am seeking a long-term, 100% remote position focused on Java backend and REST API development, with a passion for scalable systems and collaborating with cross-functional teams.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

German

Fluent

English

Fluent

Work Experience

Software Engineer at Self-Employed, Remote

January 1, 2022 - January 1, 2025

Designed and built scalable backend systems and REST APIs for a production consumer-facing data platform. Developed Spring-based APIs with a focus on performance, reliability, and clean architecture. Implemented data processing pipelines to ingest, normalize, and aggregate large datasets (~10,000 items per batch). Built authorization and access control logic integrated with external subscription systems. Managed deployments, monitoring, performance optimization, and incident resolution. Documented APIs and backend components to support maintainability and asynchronous collaboration.

Software Engineer at Self-employed

January 1, 2022 - January 1, 2025

Designed and built scalable backend systems and REST APIs for a production consumer-facing data platform. Implemented data processing pipelines to ingest, normalize, and aggregate large data sets (~10,000 items per batch). Built authentication and access-control integration with external subscription systems. Managed deployments, monitored performance, and resolved incidents. Wrote API and backend component documentation to support maintainability and collaboration.

Software Engineer at Self-employed (Remote)

January 1, 2022 - January 1, 2025

Responsible for end-to-end backend development for a productive SaaS platform. Implemented RESTful web services, data modeling and SQL optimization (MySQL). Built secure authentication/authorization with cryptographic signatures, integrated external web services, and contributed to architecture and service monitoring. Led the development of dashboards for internal stakeholders and supported critical business processes.

Full-Stack Engineer at LVM Münster, Germany

January 1, 2021 - January 1, 2022

Developed backend services and REST APIs using Spring to process and validate structured business data. Designed relational data models and implemented lifecycle tracking logic to ensure data consistency. Built Angular dashboards to present calculated metrics and operational insights. Collaborated with business stakeholders to translate requirements into maintainable backend solutions.

Full-Stack Engineer at LVM Versicherung

January 1, 2021 - January 1, 2022

Full-Stack Developer at LVM Versicherung

January 1, 2021 - January 1, 2022

Developed internal applications on the basis of Spring and Angular; designed and maintained DB2 database schemas; implemented backend logic; built dashboards and supported business-critical processes; contributed to database modeling and data governance; collaborated across teams to ensure quality and timely delivery.