Java Workflow Engine Developer
Location: Oakville, Ontario - Hybrid
Employment Type: Contract to hire
Contract duration: 1 year
Experience Level: Intermediate to Senior
Who Are You?
You are a highly skilled Java Backend Developer with strong experience building enterprise-grade workflow-driven applications. You understand that workflow systems are far more complex than traditional CRUD applications and require careful management of process state, transaction boundaries, concurrency, auditability, reliability, and performance.
You have hands-on experience working with workflow and BPM platforms such as jBPM, Camunda, Flowable, Activiti, or similar technologies. You are comfortable designing and implementing backend services that support long-running workflows, approvals, escalations, retries, exception handling, and audit requirements.
You are also comfortable leveraging modern AI-assisted development tools such as Claude Code, OpenAI Codex, GitHub Copilot, Cursor, or similar technologies to improve productivity while maintaining strong engineering judgment and code quality standards.
Position Overview
We are looking for a strong Java Backend Developer / Workflow Engine Developer to design, develop, and support mission-critical, workflow-driven backend applications. This role requires hands‑on experience building enterprise Java services using workflow/BPM engines such as jBPM, Camunda, Flowable, Activiti, or similar platforms.
Experience in finance, insurance, banking, government, healthcare, or other workflow-heavy industries is highly preferred.
Key Responsibilities
- Design and develop mission-critical Java backend services for workflow-driven enterprise applications.
- Implement business workflows using jBPM, Camunda, Flowable, Activiti, or similar workflow/BPM engines.
- Model, execute, and maintain workflow processes using BPMN, decision rules, task routing, approvals, escalations, timers, and exception handling.
- Build reliable backend APIs using Java, Spring Boot, RESTful services, and WebSocket-based communication.
- Design transaction-safe backend logic with a strong understanding of ACID transactions, isolation levels, rollback behavior, locking, and consistency.
- Develop backend services that support long-running workflows, human-in-the-loop tasks, system tasks, retry logic, and audit trails.
- Troubleshoot complex production issues related to transactions, workflow state, concurrency, thread management, JVM memory, and garbage collection.
- Optimize application performance, database access, workflow execution, and JVM runtime behavior.
- Work with relational databases such as Oracle, PostgreSQL, SQL Server, or similar enterprise databases.
- Collaborate with business analysts, product owners, architects, QA, and DevOps teams to translate workflow requirements into reliable backend implementation.
- Create automated tests for workflow logic, REST APIs, transaction behavior, and edge‑case scenarios.
- Use Agentic AI tools such as Claude Code, Codex, GitHub Copilot, Cursor, or similar tools to assist with code analysis, implementation, test generation, documentation, and productivity improvement.
- Review AI-generated code carefully and apply strong engineering judgment before using it in production systems.
Required Qualifications
- 4-6 years of strong hands-on experience as a Java backend developer.
- Strong experience with Spring Boot, REST APIs, and enterprise backend service development.
- Hands‑on experience with at least one workflow/BPM engine, such as jBPM, Camunda, Flowable, or Activiti.
- Apache Airflow, Temporal, or similar workflow orchestration platforms may also be relevant.
- Strong understanding of workflow‑driven application design, including process state, task assignment, escalation, retries, timers, compensation, and audit history.
- Solid understanding of ACID transactions, transaction boundaries, rollback behavior, database consistency, and distributed transaction challenges.
- Strong knowledge of multithreading, concurrency, thread pools, asynchronous processing, and synchronization issues.
- Good understanding of JVM internals, memory management, garbage collection, heap/thread dumps, and performance troubleshooting.
- Experience with relational databases and SQL.
- Experience developing and consuming REST APIs.
- Experience with WebSocket or real-time backend communication is preferred.
- Ability to work on mission‑critical systems where reliability, correctness, auditability, and maintainability are essential.
- Strong troubleshooting and debugging skills.
- Good documentation and communication skills.
Preferred Qualifications
- Experience in finance, insurance, banking, pension, claims processing, underwriting, payment processing, government case management, healthcare workflow, or other regulated workflow-heavy domains.
- Experience building systems involving approvals, reviews, adjudication, case management, claims, payment workflows, onboarding workflows, compliance workflows, or exception handling.
- Experience with BPMN 2.0, DMN, rules engines, or decision tables.
- Experience with Camunda 7 / Camunda 8, jBPM, Flowable, or Activiti in production environments.
- Experience with message-driven architecture using Kafka, RabbitMQ, JMS, ActiveMQ, or similar messaging platforms.
- Experience with Spring Security, OAuth2, JWT, IAM integration, or role-based access control.
- Experience with observability tools such as logs, metrics, traces, Prometheus, Grafana, ELK, OpenTelemetry, or similar.
- Experience with Docker, Kubernetes, CI/CD pipelines, Git, Maven/Gradle, and automated testing.
- Experience using GenAI or agentic development tools such as Claude Code, OpenAI Codex, GitHub Copilot, Cursor, or similar tools.
GenAI / Agentic Tool Expectations
- The candidate is not expected to be an AI researcher but should be comfortable using AI-assisted engineering tools as part of daily software development.
- Using Claude Code, Codex, Copilot, Cursor, or similar tools to understand existing Java backend code.
- Generating first drafts of workflow services, REST APIs, unit tests, integration tests, and documentation.
- Using AI tools to analyze workflow definitions, BPMN files, service interactions, and database logic.
- Using AI to accelerate troubleshooting, refactoring, and test coverage improvement.
- Carefully reviewing, testing, and validating AI-generated code before it is merged or deployed.
Ideal Candidate Profile
The ideal candidate is a strong Java backend engineer who has worked on real enterprise workflow systems, preferably in finance, insurance, banking, or another regulated industry. They understand that workflow applications are not just simple CRUD systems. They require careful handling of process state, transaction boundaries, retries, concurrency, auditability, and production reliability.
They should be able to design and implement backend workflow services using Java and workflow engines such as jBPM or Camunda, while also being comfortable using modern AI coding tools to improve productivity.
Inclusivity
We strive to build teams that reflect the diversity of the communities we work in. We encourage all qualified applicants to apply, including people from traditionally underrepresented groups such as women, visible minorities, Indigenous peoples, people identifying as LGBTQ2SI, veterans, and people with visible or non‑visible disabilities. For accommodations, visit
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