Lexo is hiring a Senior Java Developer to design and build robust, scalable backend APIs and services. You will join a cross-functional team and be supported by senior technical leadership while working on modern Java stacks and learning to interface with an existing HPE Tandem (NonStop) mainframe environment.

What you will do

- Design, implement and maintain backend services and RESTful APIs using Java (Java 17+).
- Build microservices with Spring Boot and related Spring ecosystem technologies.
- Learn COBOL Programmiing, TAL Script and HPE-NonStop ENV
- Write automated tests (unit, integration, end-to-end) and participate in code reviews to maintain high quality.
- Collaborate with product owners, UX, QA and DevOps across the full SDLC.
- Troubleshoot, profile and optimize services for performance, reliability and scalability.
- Apply practical AI/ML tools and automation to improve development and operational productivity.

Required qualifications
- Strong Java fundamentals and production experience with Java 17+.
- Hands-on experience with Spring Boot and microservices architecture.
- Experience of Build Workflow with Github Aciton
- Practical experience with containerization (Docker) and familiarity with Kubernetes.
- Solid testing practices: unit, integration and automated E2E testing.
- Strong problem-solving, communication and technical writing skills.
- Experience working in Agile teams (Scrum or Kanban).

Nice-to-have
- Experience with HPE Tandem (NonStop)



or COBOL Language, or willingness to learn legacy mainframe system.
- Familiarity with FX, money markets, or financial services domains.
- Experience applying AI/ML tools in a software engineering workflow.

What we offer
- Permanent role with career growth toward Senior Specialist or technical leadership.
- Collaborative, supportive team and mentorship from senior engineers.
- Hybrid work model: downtown Toronto office plus 2 days/week onsite.

Logistics
- Expected start date: Nov 01, 2026
- Job type: Permanent
- Location: Downtown Halifax, ON (hybrid — 2 days/week onsite)
- Salary: TBD

How to apply Please submit your resume and a brief note describing relevant Java projects or systems you have built, and any experience with legacy systems or financial domain work.

Lexo is an equal prospect employer. We welcome candidates from diverse backgrounds and are committed to creating an inclusive environment for all employees.

Job Types: Full-time, Permanent

Pay: From $70,000.00 per year

Benefits

- Dental care
- Extended health care
- Paid time off
- Vision care

Flexible language requirement:
- French not required

Education:
- Bachelor's Degree (required)

Experience:
- Java: 5 years (required)
- Spring Boot: 3 years (required)
- Kubernetes: 1 year (required)
- GitHub: 1 year (required)
- Linux: 1 year (required)

Work Location: Hybrid remote in Halifax, NS

📌 Sr. Java Developer on Capital Market - Halifax (Halifax Regional Municipality)
🏢 Lexo Consulting Services
📍 Halifax Regional Municipality