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Alexander KeckAK

Alexander Keck

Technical Lead / Senior Software Engineer

€720/day
Hamburg, DE
8-15 years

Average response time: 1 hour

About Alexander

I am a Technical Lead and Senior Backend Engineer with a strong focus on building scalable systems and optimizing development and deployment processes.

I help companies improve system stability, accelerate delivery, and bring structure into complex architectures.

In my recent work, I reduced deployment times by ~90% by designing and implementing CI/CD pipelines and daemonless container build processes (Jib, Kaniko).

I combine hands-on development with architectural thinking and enjoy working at the intersection of backend, DevOps, and system design.
  • German

    Native or bilingual

  • English

    Fluent

Can work on-site
Hamburg (up to 10km)

Experience

  • NautilusLog GmbH
    Technical Lead / Senior Software Engineer
    September 2021 - February 2026 (4 years and 5 months)
    • Led cross-functional team (backend, frontend, mobile)
    • Acted as interface between product management and engineering
    • Managed release cycles and deployments
    • Contributed to development using Java, Kotlin, TypeScript, React, Next.js
    • Designed and implemented scalable backend systems using Java and Spring Boot
    • Defined and drove architecture decisions across services and applications
    • Built and maintained CI/CD pipelines using Jenkins
    • Implemented container image builds using Jib (Java) and Kaniko (frontend)
    • Reduced deployment time by ~90% and increased deployment frequency
    • Developed contract-first APIs using OpenAPI specifications
    • Implemented event-driven architecture and event sourcing patterns
    • Built centralized logging and monitoring using ELK stack (Elasticsearch, Logstash, Kibana)
    • Worked with Kubernetes-based environments
    • Collaborated with external partners on real-time tracking systems
    Java Kotlin CI/CD Kubernetes Typescript
  • OPITZ CONSULTING
    Software Engineer
    June 2020 - August 2021 (1 year and 2 months)
    • Developed REST APIs using Java and OpenAPI
    • Built cloud infrastructure on AWS (EC2, S3)
    • Analyzed and migrated legacy systems to modern architectures
    • Mentored junior developers and students
    Java SQL IBM Db2 OpenAPI JakartaEE
  • adesso SE
    Software Engineer
    February 2019 - May 2020 (1 year and 3 months)
    • Worked on legacy system modernization (Java EE, Kafka, DB2)
    • Built CI/CD pipelines using Jenkins and Docker
    • Applied Test Driven Development (TDD) and Domain Driven Design (DDD)
    • Conducted code reviews and supported team members
    Java Apache Kafka Mockito Domain Driven Design Test driven development

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Education

  • B.Sc. Computing in Science
    University of Hamburg
    2016

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