We are looking for a Full Stack Java Developer to build and enhance contemporary web applications using Angular on the frontend and Java/Jakarta EE on the backend.

The role also requires working knowledge of databases and practical familiarity with AI-assisted development tools and LLM application components (e.g., vector databases and orchestration frameworks).

You will collaborate with product, QA, and Dev

Ops teams to deliver secure, testable, container-ready solutions.

Responsibilities Develop and maintain SPA features using Angular 17+ , Type

Script 5.x , and Angular Material / Material Design .

Build backend services using Java 17+ and Jakarta EE 10 (REST APIs, validation, security, integration patterns).

Design and implement API contracts, error handling, logging, and performance-conscious services.

Write and maintain automated tests: Frontend: Jest Backend: JUnit 5 Work with databases: create/modify schemas, write queries, tune basic performance, and support migrations.

Apply AI tools and patterns to improve productivity and/or product features: Use AI coding assistants (e.g., Git

Hub Copilot , Windsurf/Devin ) effectively and responsibly.

Integrate or support LLM-based capabilities using vector databases (e.g., ChromaDB or similar) and orchestration frameworks ( Lang

Chain or Haystack ).

Use Git for version control and participate in code reviews and branching workflows.

Build and package applications using Maven ; containerize and run services with Docker .

Collaborate in agile ceremonies, contribute to estimations,



and communicate progress and risks clearly.

Troubleshoot issues across the stack (UI, API, database, container/runtime) and contribute to root-cause analysis.

Required Qualifications Professional experience delivering full stack applications with: Angular 17+ , Type

Script 5.x , Angular Material Java 17+ , Jakarta EE 10 Testing experience with Jest (frontend) and JUnit 5 (backend).

Working knowledge of databases (relational preferred): SQL querying, joins, indexes basics, transactions, and data modeling fundamentals. AI enablement experience/knowledge: Hands-on familiarity with Git

Hub Copilot and/or Windsurf/Devin Understanding of vector databases (e.g., ChromaDB or similar) and typical RAG flows Exposure to Lang

Chain or Haystack concepts (chains/pipelines, retrieval, prompt management) Proficiency with Git , Maven , and Docker in day-to-day development.

Nice to Have Oracle / PL/SQL Spring Batch Python / FastAPI Open

Shift / Kubernetes Jasper Reports Redis Key Skills (Summary) Frontend: Angular 17+, Type

Script 5.x, Angular Material, Jest Backend: Java 17+, Jakarta EE 10, JUnit 5 Data: SQL + database fundamentals; (optional) Oracle/PLSQL, Redis AI Enablement: Copilot/Windsurf/Devin, Vector DB (ChromaDB+), Lang

Chain/Haystack General: Git, Maven, Docker; (optional) Open

Shift/Kubernetes What Were Looking For Ability to own features end-to-end (UI API database) Strong testing mindset and clean coding practices Practical understanding of how to incorporate AI tools and LLM components safely (privacy, correctness, review)

📌 Full Stack Java Developer to build and enhance modern web applications using Angular, Java/Jakarta EE, databases, and AI-enabled development tools. (Toronto)
🏢 S.i. Systems
📍 Toronto