Full-Time

DevSecOps Engineer

lemon.markets

lemon.markets

51-200 employees

Brokerage-as-a-Service investment API platform

No salary listed

Germany

Hybrid

Hybrid; Germany-wide with on-site in Berlin 4+ days per month for contributors; EU remote workation up to 10 days at a time.

Category
DevOps & Infrastructure (2)
,
Required Skills
Service Mesh
Kubernetes
Git
Computer Networking
Role-based Access Control
AWS
Terraform
Helm
Requirements
  • Proven experience with AWS infrastructure and AWS security fundamentals, such as VPC, Security Groups, Guard Duty, Control Tower or CloudTrail
  • Experience securing Kubernetes, including applying network policies, admission controls, OPA/policy-as-code, and service-mesh-aware security patterns
  • Understanding of the Software Development Lifecycle and its tooling (GitHub, CI/CD), and how to embed and operate security controls throughout the delivery lifecycle
  • Proficiency with infrastructure as code and configuration management tools such as Terraform and Helm chart
  • Hands-on experience with network and identity security, including firewalls/WAF, Public Key Infrastructure certificates, identity providers (Identity Federation/Single Sign-On), and RBAC/least-privilege access controls
  • Hands-on experience designing and operating a Vulnerability Management program end-to-end, covering SAST, DAST, Software Composition Analysis, container/image scanning, cloud/Kubernetes posture scanning, and runtime anomaly detection
Responsibilities
  • Lead the design, guidance and automation of lemon.markets cloud infrastructure security to be robust, secure and scalable.
  • Develop proactive security strategies and solutions to ensure security is embedded at all stages of the delivery lifecycle.
  • Contribute to building the brokerage API offering by ensuring security-by-design principles are applied for embedding brokerage services into partner products.
  • Contribute to expanding and improving the Trading API Product to become the leading trading API for developers.
  • Own ownership of security incidents and response planning, monitoring, and improvements.
  • Collaborate with cross-functional teams, including development, operations, and product, to implement secure architectures and controls.
Desired Qualifications
  • Security Certifications such as GSEC, CISSP, CCSP, CCSK, CISM, GCUX or SAST

lemon.markets provides a Brokerage-as-a-Service platform that lets other companies add stock investing features through a single API. Its API-first stack handles account opening, order management and execution, custody, and tax reporting, and can be tailored for use cases like savings plans and automated trading; it uses an in-house order management system for high throughput and plans fractional trading. It is BaFin-licensed and focuses on removing regulatory and technical hurdles for partners, differentiating itself by providing end-to-end investment infrastructure to fintechs, banks, wealth managers, and tech firms. Its goal is to enable partners to launch compliant, customer-centric investment services with minimal integration effort while maintaining independent operation under its new ownership.

Company Size

51-200

Company Stage

Early VC

Total Funding

$29.7M

Headquarters

Berlin, Germany

Founded

2020

Simplify Jobs

Simplify's Take

What believers are saying

  • dwpbank acquisition provides access to Volksbanken and Sparkassen customer base for rapid scaling.
  • Expanded leadership team and equity compensation product support accelerate partner onboarding and revenue.
  • Partnerships with beatvest, Tomorrow, and Deutsche Bank validate platform across wealth and banking verticals.

What critics are saying

  • dwpbank integration failure disrupts platform stability and drives partner migration to competitors.
  • Trade Republic and Scalable Capital launch competing BaaS offerings, undercutting pricing and bundled services.
  • Founder autonomy loss under dwpbank ownership triggers key talent departure and innovation slowdown.

What makes lemon.markets unique

  • API-first infrastructure abstracts regulatory, technical, and operational complexities for partners.
  • BaFin-licensed securities institution enabling compliant end-to-end investment product launches.
  • Modular platform supports contextual brokerage use cases like tax refund reinvestment.

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Benefits

Stock Options

Flexible Work Hours

Hybrid Work Options

Home Office Stipend

Professional Development Budget

Remote Work Options

Training Programs

Performance Bonus

Company Social Events

Employee Referral Bonus

Growth & Insights and Company News

Headcount

6 month growth

↓ -7%

1 year growth

↓ -9%

2 year growth

↓ -6%
Finextra Research
Aug 6th, 2025
Dwpbank buys brokerage-as-a-service platform lemon.markets

Dwpbank buys brokerage-as-a-service platform lemon.markets.

Norton Rose Fulbright
Aug 6th, 2025
Norton Rose Fulbright advises dwpbank on acquisition of lemon.markets Group

Norton Rose Fulbright advises dwpbank on acquisition of lemon.markets Group.

Tech.eu
Aug 6th, 2025
dwpbank Acquires lemon.markets for BaaS Expansion

Deutsche WertpapierService Bank (dwpbank) has acquired Berlin-based fintech lemon.markets to enhance its Brokerage-as-a-Service (BaaS) offering. This acquisition will allow dwpbank to combine its securities expertise with lemon.markets' innovative digital brokerage technology. The partnership aims to provide flexible, modern securities services, leveraging lemon.markets' API-based platform for seamless integration and digital workflows. Both companies will maintain their identities while collaborating closely.

Handelsblatt
Aug 6th, 2025
DWP Acquires Lemon Markets for Neobrokerage

The DWP, the securities depository bank for Volksbanken and Sparkassen, has acquired fintech Lemon Markets. This move aims to quickly provide their customers with a foundation for more affordable digital securities offerings, known as neobrokerage. The acquisition is a response to the success of neobrokers like Trade Republic and Scalable Capital.

Finance Magnates
May 5th, 2025
lemon.markets Expands Brokerage-as-a-Service Platform to Support Equity Compensation

Founded in 2020, lemon.markets has secured over €28 million in funding from investors including CommerzVentures, Creandum, Lakestar, Lightspeed, and System.one.