Tobias Kopelke

Senior Backend & Fullstack Developer
43 years
based in Hamburg
father of two

Skills

Senior Backend & Fullstack Developer with ~25 years of professional experience working with TypeScript LogoTypeScript, Node.js, GraphQL LogoGraphQL, PostgreSQL, MySQL LogoMySQL, and modern web architectures. Focused on building reliable backend systems, API design, technical leadership, and pragmatic product development. Additionally interested in IoT, automation, woodworking, and electronics.

typescript
node.js
trpc / orpc
api design
system design
tdd / bdd
javascript
postgreSQL
sqlite / sql
git
docker
python
java
react
iot
electron
mongodb
graphql
jira
confluence
c / c++

Work

03.2022Present

RiskIdent, Senior Fullstack Developer

remote
node.jstypescriptgraphqlmicroservicesmonorepojestangular

Working on the Frida2 platform for online fraud prevention. Focus on TypeScript-based backend services, GraphQL APIs, microservices, and maintainable system architecture.

01.202203.2022

Hive Digital, Senior Fullstack Developer

remote
node.jsseonftblockchainjest

Extended a WAX blockchain marketplace using Node.js. Implemented new features and backend integrations with a strong focus on quality.

07.202112.2021

LifeTime, Senior Fullstack Developer

remote
node.jselectronmochatypescript

Worked on the encrypted desktop messaging application. Focus on Electron, TypeScript, and application architecture.

21.09.201822.09.2018

Develop<her> Coach

javascripthtml

Coached participants during a 2-day Develop<her> event, teaching the fundamentals of HTML and JavaScript.

201706.2021

Otto Ready, Senior Fullstack Developer

Hamburg / remote
node.jsreacttypescriptjavapythonserverless

Developed an IoT system with a web frontend and backend services. Contributed to system architecture and later migration to a Python-based serverless setup.

20152017

Immomio, Frontend Lead Developer, Shareholder

Hamburg
angularnode.jsjavascripttypescriptgraphqlreact

Built frontend workflows and development environments. Led a team of three developers and introduced a modular Node.js/GraphQL service architecture. Still a shareholder.

20132014

Computer Science Teacher

Gymnasium Hummelsbüttel, Hamburg

Taught computer science to 11th and 12th grade students.

20072013

BAV.Haus AG, Junior Fullstack Developer

Hollenstedt / Hamburg
phpmysqlnode.jsjavascript

Developed backend systems for tax calculation related to BAV contracts. Migrated an Excel-based solution to a PHP backend with a MySQL database, including PDF generation and tax calculation. Later transitioned to a Node.js-based system.

Freelance Projects

20142015

Raiffeisen.ch / Adobe, Mortgage Calculator (AngularJS)

St. Gallen, Switzerland
angularsvgjavascript

Worked in a freelance team of three to build an interactive mortgage calculator with complex calculation logic and strong usability.

20132014

Collins GmbH & Co. KG, Frontend Development

Hamburg
javascriptphpbackbone

Developed product views for aboutyou.de and performed refactoring and stabilization of the existing codebase.

20132014

PostCon Deutschland GmbH, Intranet Modernization

Berlin
angularjavascriptTDD

Introduced a modern frontend system, implemented a ticketing system, and established a test-driven development workflow.

20132013

KSS Services/Solutions, Web Development

Hamburg
phptypo3javascriptreact

Delivered multiple TYPO3-based websites and developed a React-based backend module.

Education

2005

6-month Internship at Unilever Germany

Hamburg
20042011

Computer Science Studies

University of Hamburg
20012004

Lessing Gymnasium, Abitur

Norderstedt
20002001

Magnet Cove High School, High School Diploma

Malvern, Arkansas, USA
19932000

Alstergymnasium

Henstedt-Ulzburg

Family

December 2017

Married Ruth

Kisdorf
September 2018

Theodor was born

Hamburg
October 2020

Finn was born

Hamburg