---
title: 'Senior Security Engineer  - Application Security at Trade Republic'
canonical: 'https://feeny.ai/job/senior-security-engineer-application-security-trade-republic-berlin-70ne7z54eb2z'
type: 'job'
last_seen: '2026-09-12'
---

# Senior Security Engineer  - Application Security at Trade Republic

- **Company:** Trade Republic
- **Location:** Berlin, Germany / London, United Kingdom
- **Posted:** 2025-08-15
- **Last confirmed live:** 2026-09-12
- **Apply:** https://traderepublic.com/en-de/about?jobId=6683716003&gh_jid=6683716003

## Job description

Please note that this position is based in Berlin or London.

## THE BEST WORK OF YOUR CAREER

Trade Republic is the largest savings platform in Europe - we operate in 17 countries, serving +8 million customers who trusted us with over 100B in assets. But we’re striving for more.

We have a bold mission to empower everyone to build wealth with easy, safe, and free access to financial systems. You will have the opportunity to grow your career by collaborating with a team of outstanding talents and state of the art technology to build a lasting, positive future for millions.

## WHAT YOU'LL BE DOING

As a Senior Security Engineer in our Application Security team, you'll safeguard Trade Republic's applications and development lifecycle through proactive security integration and engineering excellence. Your responsibilities include:

- Partner with engineering teams to embed security into the software development lifecycle from design to deployment;
- Conduct security code reviews, threat modeling sessions, and architecture reviews for critical applications and services;
- Design and implement SAST, DAST, and SCA solutions to identify vulnerabilities early in the development process;
- Build and maintain application security testing automation within CI/CD pipelines;
- Develop secure coding standards, security libraries, and reusable security components for engineering teams;
- Perform penetration testing and vulnerability assessments of web applications, APIs, and mobile applications;
- Triage, prioritise, and remediate application vulnerabilities working closely with development teams;
- Create security champions program and provide security training to engineering teams;
- Research emerging application security threats and integrate defensive measures into the security architecture;
- Contribute to bug bounty program management and coordinate with external security researchers

## WHAT WE'RE LOOKING FOR

Core Experience:

- 5+ years as a Security Engineer with 4+ years focused on application security
- Deep understanding of web application security (OWASP Top 10, API security, authentication/authorization)
- Hands-on experience with security testing tools (Burp Suite, OWASP ZAP, Semgrep, etc.)
- Strong programming skills in modern languages (Python, Java, Kotlin, Go, or JavaScript)
- Experience integrating security tooling into CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins)
- Expertise in secure architecture patterns for microservices, APIs, and distributed systems
- Solid understanding of cryptography, secure session management, and identity/access management
- Hands-on experience with security testing of cryptocurrency/blockchain infrastructure and applications is a major bonus
- Experience with mobile application security (iOS/Android)
- Knowledge of compliance frameworks (PCI-DSS, GDPR, MaRisk) is advantageous
- Excellent communication skills to translate security concepts for engineering audience

## WHY YOU SHOULD APPLY NOW

Our culture rewards ownership, excellence, and high energy. We care deeply about outcomes and hold each other accountable - we’re here to win and fix one of the largest challenges Europeans face - closing the pension gap and democratising wealth. If this gets you fired up, reach out! We believe it’s our team’s varied identities and backgrounds that make us sharper and stronger. We’re committed to creating an environment where everyone feels respected and has equal opportunity to thrive in their careers. For any questions on DEI during the interview process, reach out to your recruitment partner.

## About Trade Republic

## Company Overview
- **One-liner**: Trade Republic is a German neobroker and full-service banking platform that enables commission-free investing, saving, and spending through a mobile-first app.
- **Entity Type**: Private (Series C; total funding disputed between $1.3B and $2.6B; secondary market in 2025)
- **Headquarters**: Berlin, Germany
- **Founded**: 2015
- **Founders**: Christian Hecker, Thomas Pischke, Marco Cancellieri

## Core Business
- **Primary industry**: Fintech (neobroker / digital banking / investment platform)
- **Target customers**: B2C retail investors, predominantly young and first-time investors (≈70% under 35 in 2022), across 17 European countries
- **Mission**: To be the easiest, fastest, and cheapest tool to invest in capital markets and help people save recurrently and consistently

## Products & Services
- **Invest**: Commission-free trading in stocks, ETFs, bonds, derivatives, and cryptocurrencies. Includes fractional investing, real-time market data, and analyst views.
- **Save**: Interest-bearing current account with 2% p.a. on cash balances (paid monthly), automated savings plans, and free ATM withdrawals above €100.
- **Spend**: Visa debit card (virtual, classic, or mirror design) with a 1% Saveback feature that invests 1% of card spend into a chosen savings plan (capped at €15/month). No subscription fees.

## Market Standing
- **Valuation**: $5.3B as of Series C in May 2021; secondary market transaction of $1.2B in December 2025 (no new valuation disclosed). Both figures are from conflicting reports.
- **Key Metric**: €100 billion in assets under management; 8 million customers as of April 2025.
- **Annual Revenue**: $25.0M (estimated by LinkedIn firmographic data; company has not publicly disclosed revenue for recent years).
- **Total Funding**: Ranges between $1.3B (Contrary) and $2.6B (LinkedIn) depending on inclusion of secondary rounds. Key rounds:
  - Series C (2021): $900M led by Sequoia Capital (also TCV, Thrive Capital, Accel, Founders Fund)
  - Series C extension (2022): €250M led by Ontario Teachers’ Pension Plan
  - Secondary market (2025): $1.2B from 7 investors
- **Notable Investors**: Sequoia Capital, TCV, Thrive Capital, Accel, Founders Fund, Ontario Teachers’ Pension Plan
- **Growth Signals**: 
  - 17.9% headcount growth YoY (709 employees, +203 people)
  - 65% of customers are first-time investors
  - One-third of customers now come from outside Germany
  - Opened national branches in France, Spain, and Italy in January 2025 (local IBANs, local tax automation)
  - Job postings surged 243.8% YoY

## Competitive Advantages
- **Full ECB banking license** since 2023, enabling savings and current account products directly, not just brokerage
- **Scale**: 8M users and €100B AUM create massive network effects and data advantages for product development
- **Low‑cost model**: Commission-free trades, zero subscription fees, and fractional investing remove barriers for retail investors
- **Vertical integration**: All platform components built in-house (no external vendors), including execution via LS Exchange (Hamburg Stock Exchange)
- **Strong brand & trust** in Germany’s fintech ecosystem, reinforced by partnerships with banks like Deutsche Bank and J.P. Morgan

## Strategic Focus
- **International expansion**: Localized banking products with local IBANs in France, Spain, Italy; state-supported savings products
- **Revenue diversification**: Reducing reliance on PFOF (phased out by EU by June 2026; PFOF was 1/3 of revenue in 2024) – building income from interest, card fees, and savings products
- **Product depth**: Adding bonds, derivatives, crypto, and automated tax reporting to increase stickiness
- **Engineering investment**: 280+ engineers organized in domain-based teams; active open‑source contributions; hiring across ML, platform, and security roles

## Why Work Here
- **Engineering culture**: Entire platform built in-house; decisions governed by RFCs, ADRs, and a Tech Radar (ThoughtWorks-inspired). Active engineering blog on Substack covering PostgreSQL, Kafka, Swift macros, and LLMOps. Open‑source project Cilicon (1,140 GitHub stars).
- **Work environment**: Hybrid model – typically 3 days in office (Mon/Wed/Thu), WFH on Mondays and Fridays. Full remote available for some engineering roles. Work‑from‑abroad option for limited periods. Engineering hubs in Berlin, London, and Paris.
- **Perks & team**: ~709 people, heavily technical (21% in engineering). Strong talent flow from N26, Klarna, Amazon, and Deutsche Bank. Very high hiring growth (+243% YoY job postings) signals aggressive scaling.
- **Culture notes** (based on LinkedIn employer reviews – 380 ratings, overall 2.9/5): Work‑life balance rated lower (2.2), compensation (3.2), and culture (2.4). Career development rated 3.0. The company is in a high‑growth phase, which may deliver fast career acceleration but with intense expectations.

## Sources
1. [Trade Republic Official About Page](https://traderepublic.com/en-de/about)
2. [LinkedIn Company Page – Trade Republic](https://www.linkedin.com/company/trade-republic)
3. [Contrary Research – Trade Republic Company Profile](https://research.contrary.com/company/trade-republic)
4. [iwill.work – Trade Republic Jobs & Company Info](https://iwill.work/companies/trade-republic)
5. [Trade Republic – Products & Services Overview](https://traderepublic.com/en-de)

## Other roles at Trade Republic

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- [Junior Talent Acquisition Partner](https://feeny.ai/job/junior-talent-acquisition-partner-trade-republic-headquarter-zd7dq6h7h5vj) — Headquarter
- [Process Operations Working Student (f/d/m)](https://feeny.ai/job/process-operations-working-student-f-d-m-trade-republic-berlin-7w9tdkktrwsg) — Berlin, Germany
- [Engagement Manager](https://feeny.ai/job/engagement-manager-trade-republic-headquarter-hpp7xvcps5de) — Headquarter
- [Country Manager Portugal](https://feeny.ai/job/country-manager-portugal-trade-republic-headquarter-g3tjg1yye1bz) — Headquarter
- [Accounting Intern](https://feeny.ai/job/accounting-intern-trade-republic-headquarter-a93q139tceed) — Headquarter
- [Front Desk Agent](https://feeny.ai/job/front-desk-agent-trade-republic-headquarter-cmkdhcca5vkf) — Headquarter
- [Tax Manager - Financial Services](https://feeny.ai/job/tax-manager-financial-services-trade-republic-headquarter-mqgdtv0kjtkq) — Headquarter
- [Senior Office Operations Manager](https://feeny.ai/job/senior-office-operations-manager-trade-republic-headquarter-t6tbcvb6xg27) — Headquarter
- [(Senior) People Partner](https://feeny.ai/job/senior-people-partner-trade-republic-headquarter-gt0cgfy3wh7z) — Headquarter