Frontend Engineer - Banking Platform (m/f/x)

United States Digital Space LLC; Berlin; Vor Ort; EUR 75.000 - 110.000; Vollzeit

Benefits dieser Stelle

Relocation support

Education Budget

International team

Language learning

Zusammenfassung

Capital is building a native cross-platform application to support internal trading workflows, spanning a React/TypeScript frontend to a Rust core backend, with ownership over real-time data flows, authentication, release automation, and operational quality.

You will work across the full stack, focusing on reliability, security, and performance, while collaborating on architecture, testing, and engineering standards across frontend, backend, and operations.

Qualifikationen

• University degree or comparable qualification in a relevant field.
• Extensive experience with React, TypeScript, Vite, Rust, GitHub Actions, AWS.
• Strong production software experience with React/TypeScript.
• Basic Rust proficiency or equivalent backend experience to become productive quickly.
• Experience with authentication security, OAuth2/OIDC flows.
• Experience with real-time/event-driven systems and CI/CD pipelines.

Aufgaben

• Build and maintain a native cross-platform app using React, TypeScript, Vite and Rust.
• Develop user-focused features with emphasis on usability and performance.
• Design and evolve Rust logic for authentication, IPC contracts, and integrations.
• Manage real-time streaming data, throttling, and multi-window consistency.
• Maintain secure auth flows based on OIDC and Keycloak.
• Own and improve CI/CD workflows in GitHub Actions and release publishing.
• Support release workflows across Windows and macOS, and collaborate on architecture.

Kenntnisse

React

TypeScript

Rust

AWS

OAuth2/OIDC

CI/CD (GitHub Actions)

WebSockets

Observability/Diagnostics

Ausbildung

University degree in CS/Engineering/Sciences

Tools

Vite

GitHub Actions

AWS

Jobbeschreibung

Company Description

the company Capital is a leading digital investment and banking platform with a full banking licence, empowering people across Europe to shape their own finances. the company Broker makes it easy and affordable for clients to invest professionally in stocks, ETFs, cryptocurrencies, and derivatives, as well as set up savings plans. the company Wealth, the digital wealth management service, offers clients professional investment in ETF portfolios, and is also adopted as a white-label solution by banks and other B2B partners. The company’s offerings are rounded off by attractive interest rates, loans, and private equity. With the European Investor Exchange, the company Capital offers an exchange specifically for retail investors. Over one million clients have already entrusted more than €30 billion to the platform.

Founded in 2014, the company Capital now employs over 700 people across Munich, Berlin, Vienna, Milan, and London. Together with the founding and management team, including Erik Podzuweit and Florian Prucker, they are working on a new generation of financial services.

Visit our finance blog or check out our Social Media channels to find out what our Expert Teams have to say.

Our Company Values guide us every day in how we work and collaborate. To learn more about them, you can find our values here (English).

Job Description

Be part of the team building and evolving a native application that supports internal trading workflows, where reliability, security, and performance matter. You’ll work across the full application stack, from a React and TypeScript frontend to a Rust core backend for frontend, with ownership over real-time data flows, authentication, release automation, and operational quality.

• Build and maintain a native cross-platform application using React, TypeScript, Vite and Rust.


• Develop user-facing product features with a strong focus on usability, performance, and maintainability.


• Design and evolve Rust application logic for authentication, IPC contracts, service integrations, and real-time stream handling.


• Build and maintain streaming flows for live data, including throttling, backpressure handling, and multi-window consistency.


• Maintain secure authentication and authorization flows based on OIDC and Keycloak.


• Own and improve CI/CD workflows in GitHub Actions, including validation, coverage, packaging, signing, and release publishing.


• Support release and delivery workflows across Windows and macOS.


• Work with AWS services used in delivery and operational workflows, especially S3, IAM roles, OIDC-based access, and secrets handling.


• Improve observability through logging, metrics, runtime diagnostics, and better release visibility.


• Collaborate on application architecture, testing strategy, and engineering standards across frontend, backend, and operational concerns.

Qualifications

• A university degree in a relevant field of study (e.g. computer science, engineering, sciences, ...) or a comparable qualification.


• Extensive experience in our tech stack: React, TypeScript, Vite, Rust, GitHub Actions, AWS.


• Strong experience building production software with React and TypeScript.


• Basic Rust proficiency, or solid experience in a compiled backend or systems language with the ability to become productive in Rust quickly.


• Experience building or maintaining complex user-facing applications in production.


• Good understanding of authentication and security fundamentals, especially OAuth2 and OIDC-style flows.


• Experience with real-time or event-driven systems such as WebSockets or streaming data pipelines.


• Experience maintaining CI/CD pipelines and release workflows in GitHub Actions.


• Basic AWS knowledge relevant to software delivery and operations.


• Strong analytical thinking, both in the technical and in the product domain.


• Excellent communication skills that are clear, concise, and targeted towards your audience - engineering, product, or other stakeholders.


• A passion for well architected, testable and documented code.


• Experience improving observability through logs, metrics, and production diagnostics is a plus.


• Experience with native application packaging, updater/signing flows, and cross-platform release automation is a plus.


• Experience with Keycloak, backend-for-frontend architecture, or real-time data-heavy systems is a plus.


• Experience using coding agents (e.g., Codex or similar AI-assisted development tools) is a plus.

Additional Information

• Be part of one of the fastest-growing and most visible Fintech startups in Europe, creating innovative services that have a substantial impact on the lives of our customers


• Work with an international, diverse, inclusive, and ever-growing team that loves creating the best products for our clients


• Be productive with the latest hardware and tools


• Learn and grow by joining our in-house knowledge sharing or career development sessions and spending your individual Education Budget


• Learn and experience German culture first hand by joining our free German language classes


• International relocation support is provided if required


• Opportunity to work from abroad


• Benefit from an attractive compensation package and from the company pension scheme


• Monthly contribution of 50% for the ‘Deutschland Jobticket’


• Say goodbye to order commissions and say hello to your complimentary subscription of the company Capital's PRIME+ Broker


• Enjoy flexible and discounted sports activities with Urban Sports Club