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Senior Kotlin / Java Software Engineer - Client Technology (m/f/x)

Berlin, BE, de💼 Full-time🗓 2026-07-29 → 2026-09-27

Core

Build and maintain secure client authentication, KYC, consent processes, and the Salesforce platform to support marketing and client support in the financial industry.

Role type

Senior backend software engineer (Java/Kotlin)

Builds

Cloud-native microservices for authentication, identity management, and client-facing platforms

Domain

Fintech / Financial Services

Deliverable

production ML models | product features

Required skills

Java, Kotlin, Spring, AWS (ECS, Fargate, Lambda), Docker, GraphQL, RESTful APIs, SQL, NoSQL, JWT, Microservices architecture

Preferred skills

Security engineering, DevOps practices, Financial industry domain knowledge

Technologies

AWS, ECS, Fargate, Lambda, Docker, Spring, GraphQL, REST, SQL, NoSQL

Responsibilities

Design and implement secure backend services for authentication and KYC; Maintain and enhance the Salesforce platform for marketing and support; Write clean, testable, and documented code; Collaborate on cloud-native infrastructure and DevOps tooling; Drive engineering excellence and continuous improvement

Seniority

Senior, hands-on IC

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