Senior Software Engineer - Python and React

We're expanding our team, and we have a fantastic opportunity for an experienced Software Engineer, Python and React. Your skills are crucial for building and maintaining software projects that fulfill our business requirements. You'll also have the responsibility of engaging with stakeholders and contributing to project planning. This position offers an opportunity to create a meaningful impact in a friendly and professional environment. If you share our commitment and want to be part of a team that values your input, we can't wait to hear from you!

What You'll Do:

• Maintain and develop Digital Opening Form (ReactJS)


• Maintain and develop API workflows used for automated account opening (Python)


• Support data collection and processing in CRM system (Odoo)


• Support back‑end maintenance


• Take part in developing new applications in cooperation with design teams


• Develop and maintain our Digital Opening From written in Next.js

What We're Looking For:

• At least 4 years’ experience with Python and web development (HTTP, REST, HTML).


• Proficiency in Object‑Oriented Programming and understanding of software design principles.


• Knowledge of relational database concepts and basic SQL.


• Experience with JavaScript frameworks, particularly React.


• Familiarity with Git or similar version control systems.


• Experience writing unit and integration tests to ensure code quality.


• Knowledge of containers (e.g., Docker).


• Hands‑on experience with issue management and ticketing systems (e.g., Jira, Trello).


• Familiarity with agile methodologies (e.g., Scrum, Kanban)


• Experience with making frontend designs using CSS and related frameworks like Tailwind and Bootstrap


• Desired: Next.js

What We Offer:

• A central workplace: Our office is located in the heart of Berlin (U2/U6 Stadtmitte)


• Flexible and family‑friendly working hours and appropriate remuneration


• In‑house language courses financially supported by LYNX at very favorable conditions


• An annual training budget of up to € 2. 000 for your desired further training as part of your job


• Free snacks, fruit & vegetables, drinks and a daily hot lunch from our chef ‑ for meat eaters, vegetarians and vegans


• 45% subsidy for the company pension scheme as well as discounts at Urban Sports Club


• Summer party & Christmas party with the whole office as well as team events

Interview Process:

( Nikolaj Andersen & Martin Bartos and others. )

• First interview: 15 minutes screening call


• Second interview: 60 minutes Cultural Fit + Technical Interview


• Third interview: 90 minutes System Design Interview


• Fourth interview: 15 minutes call with Product Manager

About Us:

\"LYNX helps you invest in yourself\"

\"Working at LYNX means joining the LYNX family\"

\"The development opportunities make LYNX the best place to work\"

This is what the employees say about LYNX and it is exactly what we want to offer: a work environment where you can get the best out of yourself. At our office in the heart of Amsterdam, Ghent, Berlin and Prague, we work every day to offer both private and professional clients the best trading opportunities, with a fast, user‑friendly and reliable trading platform. The best choice for anyone who takes investing seriously LYNX is an international FinTech that offers you a relaxed and informal work environment, where you can get the best out of yourself and where 300 people contribute together to the success of your customers since 2006.

In 2006 LYNX entered the investor market with two spearheads: very low rates and an extensive product range. This makes the online broker not only successful in the Netherlands, but also abroad. After opening offices in Belgium, Germany and the Czech Republic, LYNX now offers its services in ten different countries, making it a European broker of size.