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Professional Java Developer IT-Security; f​/m​/d

Online/Außer Haus - Idealerweise für Kandidaten in
10115, Berlin, Berlin, Deutschland
Unternehmen: HCM ADVICE KG
Fernarbeit/Heimarbeit position
Verfasst am 2026-06-29
Berufliche Spezialisierung:
  • Software Entwicklung
    Java Entwicklung, Backend Entwicklung, Software-Ingenieur, DevOps Ingenieur
Gehalts-/Lohnspanne oder Branchenbenchmark: 60000 - 80000 EUR pro Jahr EUR 60000.00 80000.00 YEAR
Stellenbeschreibung
Stellenbezeichnung: Professional Java Developer IT-Security (f/m/d)

For ethical coders:
Build a safer world. Join our development team.

Zertificon Solutions –Software manufacturer & IT security specialist– Protecting business communications since 2004. –More than 25% of the 100 German companies with the highest turnover and hundreds of small and medium‑sized enterprises worldwide use our encryption solutions. We have big plans and are growing steadily. Located in Neukölln, Berlin, our organization counts over 100 employees. Join a professional, highly qualified team: take on challenges, share your knowledge, learn and discover your potential!

Professional

Java Developer IT‑Security (f/m/d) What you will be doing

You are to become an important team member for developing and maintaining new, containerized services that make communication secure for everyone.

Responsibilities
  • Help us push boundaries, opening up a new era of software distribution and development by creating containerized microservices in Rust/Java/Go.
  • Together with the team, proactively develop and plan our enterprise products, finding new ways and solutions to create bleeding‑edge products, expanding our position on the market.
  • Analyze the possible issues or blockers within the development strategy and plan and act in prevention.
  • Mentor and guide the subordinate team members for the most effective delivery of the results/development of the features/product an enterprise customer of Zertificon expects.
  • Help your team coordinate long‑term product road maps and architectures.
  • Develop a deep understanding of the team/products capabilities and act as an effective coordinator with the team interacting with internal stakeholders.
  • Together with the other squads create road maps, architectural pictures to develop and optimize the software features.
  • Align your teamwork with the other RND teams to make sure that your product and its components fit into the overall development architecture.
Requirements
  • You have successfully worked in a development team for at least 3 years and successfully managed to deliver solutions and products with that team.
  • You have at least 2 years of practical experience working with Java (Java 11/17/21).
  • You have experience with security, e.g. PKI, S/MIME, OpenPGP, X.509 certificates, PGP keys.
  • You are proficient with the following technologies:
    • Basic Linux commands.
    • ANSI Shell, Bash.
    • Spring MVC, Boot.
    • Message‑broker (NATS or RabbitMQ or Kafka).
    • Containerization (Docker and/or Kubernetes).
    • Microservice design.
    • Monoliths.
    • Gradle.
  • Ideally, you already have knowledge about Email, SMTP, Java Mail and Bouncy castle.
  • You have a good level on English (at least B2).
What Zertificon offers you
  • Innovative work culture in an established company - without the startup risks.
  • A reason to have a good mood in the morning – meaningful job within IT security, contributing to a safer world.
  • Collaboration in an international, highly qualified, successful and ambitious team.
  • Plenty of room for autonomy and responsibility, regular feedback meetings and transparent quarterly targets.
  • An exciting full‑time job with an attractive salary and development prospects.
  • Numerous benefits such as home office, hybrid and mobile working, flexible working hours, BVG‑Ticket/Parking/Job‑Rad, parcel acceptance, organic fruit and drinks, meal allowance, Internet subsidy, team and company events, etc.
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