Java Software Engineer – Enfinity / Intershop Commerce Platform

Strength. Care. Growth

Did you know that A1 Bulgaria is working on international projects as well?
Our wide portfolio has long past the telecom services, and we are now offering digital solutions to millions of corporate, public, and private customers.
State-of-the-art technology, the latest innovations, and extremely talented professionals in various areas help us deliver the best-in-class products, services, and customer experience.

You’ll know A1 Bulgaria is the right place for you if you are driven by:

- Opportunities to learn and build your career.

- Meaningful work in a stable and fast-paced company.

- Diversity of people, projects, and platforms.

- A supportive, fun, and inspiring place to work.

Would you like to join us?
Hamzi El- Zein is looking for a new team member.

Your daily routine would include:

- Developing core commerce features end-to-end within a cross-functional squad, designing cartridges, business logic, and custom pipelines/controllers following Enfinity best practices.

- Building and maintaining enterprise integrations connecting the Enfinity platform with ERP, CRM, payment gateways, OMS, and third-party services.

- Investigating and resolving issues across the Enfinity application cluster, cartridges, and database layers (including cache invalidation, pipeline breaks, and batch jobs).

- Participating in code reviews to maintain platform stability, architectural standards, and clean code across cartridges.

- Optimizing performance across Enfinity application servers, object caches, and Oracle DB queries.

- Designing and maintaining database schemas and Enfinity persistent business objects (ORM/EDL), ensuring data consistency across migrations.

We’ll know you can make it if you have:

- Enfinity / Intershop Commerce Management Experience: Minimum 3+ years hands-on development experience customizing Enfinity/ICM (cartridge architecture, pipelines, pipelets, job pipelines, and business objects).

- Strong Core Java & OOP: Solid command of Java (enterprise patterns, clean code, multi-threading, and memory management).

- Database & ORM Proficiency: Strong working knowledge of Oracle DB (SQL queries, stored procedures, indexing, performance tuning) and Enfinity's native ORM/persistence engine or Hibernate.

- Web & Templating Technologies: Experience working with ISML (Intershop Markup Language) templates, JSP/HTML, JavaScript, and XML-based configurations.

- Integrations & Protocols: Proven experience designing and testing REST and SOAP/XML web services and APIs (SoapUI, Postman, or equivalent).

- Application Servers & Environment: Experience configuring, deploying to, and debugging enterprise application servers (Apache Tomcat, native ICM app servers).

- Caching & Concurrency: Deep understanding of caching layers (Enfinity cache architecture, distributed caching/locking, and cache invalidation strategies).

- Tooling & Build Systems: Proficiency with Git/GitHub, Maven or Gradle, and issue tracking tools like Jira.

- Communication & Mindset:Fluent English (written and spoken).Strong communication skills — able to articulate architectural decisions, technical trade-offs, and system limitations clearly.A proactive mindset — you anticipate edge cases, spot performance bottlenecks early, and drive solutions forward independently.

Nice to have:

- Experience migrating Enfinity/ICM legacy monoliths toward headless architectures or modern REST/OpenAPI microservices.

- Familiarity with Spring Framework / Spring Boot for sidecar services or microservice extensions.

- Working knowledge of containerization (Docker, Kubernetes) and CI/CD pipelines.

- Experience with identity/security providers such as LDAP, Keycloak, or modern OAuth2/JWT auth layers.

- Familiarity with modern search/catalog engines integrated with ICM (e.g., Elasticsearch, Solr).

Our gratitude for the job done will be eternal, but we’ll also offer you:

- Innovative technologies and platforms to “play” with.

- Modern working environment for your comfort.

- Friendly, ambitious, and motivated teammates to support each other.

- Thousands of online and in-person learning opportunities to grow;

- Challenging assignments and career development opportunities in multinational environment.

- Attractive remuneration package.

- Flexible working schedule and opportunity for home office.

- Numerous additional goodies, including, but not limited to free A1 services, discounts, health insurance and services, sports center, childcare, team and family events, etc.

Not sure yet?  See us in action in our A1 Blog .
Any questions? Contact  Gabriela Rudarska.
Sounds good? Apply now!
Only shortlisted candidates will be contacted.