Java Developer (f/m/d) – Secure Communication Services

Zertificon Solutions GmbH; Berlin; Hybrid; EUR 60.000 - 80.000; Vollzeit

Zusammenfassung

Ein Softwarehersteller in Berlin sucht einen erfahrenen Entwickler (m/w/d), der containerisierte Mikroservices in Java und Spring Boot entwickelt. Sie arbeiten in einem flexiblen Umfeld und unterstützen ein hochqualifiziertes Team. Voraussetzungen sind 4+ Jahre Erfahrung in der Softwareentwicklung und 3+ Jahre praktische Erfahrung mit Java und Spring Boot. Das Unternehmen bietet flexible Arbeitszeiten und Home-Office-Möglichkeiten.

Leistungen

Flexible Arbeitszeiten

Mobility: kostenlose Deutschlandticket

Essen und Internetzuschüsse

Dachterrassen & grüner Innenhof

Team-Events

Qualifikationen

• 4+ Jahre Erfahrung in einem Entwicklungsteam.
• 3+ Jahre praktische Erfahrung mit Java und Spring Boot.
• Praktisches Wissen über Sicherheit Konzepte (PKI, S/MIME, OpenPGP).

Aufgaben

• Führen Sie die Produktentwicklung und finden Sie neue Lösungen.
• Vorwegnahme von Blockaden und Ergreifen von Maßnahmen.
• Mentorieren und Anleiten von Teamkollegen.

Kenntnisse

Java

Spring Boot

Microservices

Containerization

Sicherheit Konzepte

Tools

Docker

Kubernetes

MySQL

PostgreSQL

Jobbeschreibung

Erstellungsdatum

Untertitel

Zertificon Solutions – Software Manufacturer since 2004.
We are IT security specialists: our products encrypt business communications. More than 25% of the 100 highest-revenue companies in Germany, as well as hundreds of medium-sized enterprises across all industries, already use our Z1 encryption solutions. We have big plans and continue to grow steadily. Nearly 120 employees are already working with us in Neukölln. Join our professional, highly qualified team: take on challenges, share your knowledge, learn new things, and discover your potential!

Your tasks

Become a key player in shaping and maintainingsecure, containerized services that make communication safe for everyone.

Your work will directly fuel innovation and success across the company. Step into an environment withflexible boundaries, powered by microservices and message brokers. Want to build your service in Go? Go ahead. Discovered a new framework, library, or concept? Bring it forward! You’ll be surrounded byopen-minded colleagues who value fresh ideas and the balance offreedom and responsibility in daily work.

Help us push the limits of software distribution and development by creatingcontainerized microservicesin Java and Spring Boot at the core, while also embracing languages like Rust and Go to turn bold ideas into new products.

Together with your team, you will:

• Drive enterprise product development, findingnew solutions and approaches to create cutting-edge features and strengthen our market position
• Anticipate blockers early, and act to prevent them
• Mentor and guide teammates forefficient, high-quality delivery
• Shapelong-term product roadmaps and architectures
• Act as a bridge between your team and internal stakeholders, ensuring smooth collaboration
• Work with other squads to align software features, optimize designs, and fit seamlessly into theoverall architecture

Your profile

• 4+ years of proven experience in a development team, delivering working solutions and products
• 3+ years of hands-on experience with Java and Spring Boot (we mainly work with Java 11/17/21)
• Practical knowledge of security concepts (PKI, S/MIME, OpenPGP, X.509 Certificates, PGP Keys)

Your toolbox includes:

• Java: 11/17/21
• Frameworks: Spring Boot, Spring MVC/Web, Spring Security
• Persistence: Hibernate ORM (JPA), Liquibase
• Message Brokers: NATS / RabbitMQ / Kafka
• HTTP & APIs: Apache HttpClient, REST / OpenAPI
• Testing: JUnit 5
• OS & Scripting: Linux (basic commands), Bash
• Containerization: Docker, Kubernetes
• Microservices & Monoliths: design and implementation experience
• Build Tools: Gradle
• Databases: MySQL, PostgreSQL
• Version Control: Git, GitLab / Bitbucket
• CI/CD: Jenkins

Bonus points if you:

• Know your way around Email, SMTP, Jakarta Mail, PKI, BouncyCastle
• Have strong English skills (B2 or higher)

We offer

• Flexible working hours and home office possible
• Mobility:free Germany ticket, job bike leasing or car parking
• Allowancesfor food (e.g. Lieferando) and internet in the home office
• Benefits in the office:Roof terraces & green courtyard, organic fruit and drinks, parcel acceptance
• Get-together:pizza Friday in the office, regular team events, big summer party