Open Systems Technologies
Back End Developer
Senior Java developer builds and maintains high-performance backend services using Spring Boot, Python/Django, and cloud-native tools for a financial-services client.
- Compensation
- Not disclosed
- Location
- Mississauga, Canada
- Work setup
- Not specified
- Seniority
- Not specified
- Employment
- Contract
- Experience
- 8+ years
- Category
- Backend
- Posted
Skills
Must have
- 8-12 years of hands-on Java backend development
- Proficiency with Spring Boot
- Experience with Python, Django and/or related Python frameworks
- Ability to implement high throughput, low-latency, reliable frameworks
- Deep understanding of Java internals (GC, DI, annotations, threading, sync)
- Strong understanding of microservices architecture and RESTful APIs
- Experience with MongoDB
- Familiarity with AWS, GCP, Azure and containerization (Docker, Kubernetes)
- Solid understanding of SDLC and Agile methodologies
- Experience with message brokers such as Kafka
- Knowledge of DevOps practices and CI/CD pipelines
Full description
The Senior Java Developer is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to lead applications systems analysis and programming activities.
Qualifications
- 8-12 years of hands‑on experience in Java backend development and Python, Django and/or related Python frameworks and libraries.
- Proficiency with frameworks such as Spring Boot.
- Ability to implement high throughput, low‑latency, extremely reliable frameworks.
- Deep understanding of Java technology such as garbage collection internals, dependency injection, annotations, threading model, and synchronization primitives.
- Strong understanding of microservices architecture and RESTful APIs.
- Experience with database technologies such as MongoDB.
- Familiarity with cloud platforms like AWS, GCP, Azure and containerization (Docker, Kubernetes).
- Solid understanding of the software development lifecycle (SDLC) and Agile methodologies.
- Excellent communication skills and the ability to collaborate effectively in a team environment.
- Experience with message brokers such as Kafka.
- Knowledge of DevOps practices and CI/CD pipelines.
Seniority level
Not Applicable
Employment type
Contract
Job function
Information Technology
Industries
Banking, Financial Services, and Capital Markets