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Epsilon Solutions Ltd.

Java Payment Developer

Epsilon Solutions Ltd.
Canada · Contract · Mid-Senior

Role: Java FullStack Developer/ Architect (Payment Domain)

Location: Toronto, ON

Duration: Contract


Job Description

Mandatory Skills: Java full Stack Developer + Python + Strong commercial payment (Swift Payment)

Responsibilities and Duties

  • Design and deliver high quality features and enhancements.
  • Own the end-to-end delivery of large features within your team that could span 3+ months.
  • Create technical design specifications in collaboration with other members of the engineering team.
  • Provide estimates and actively participate in the sprint planning process.
  • Produce highly secure solutions.
  • Tune the performance of our distributed system to ensure they operate within our SLAs.
  • Peer review other engineers’ code.
  • Mentor other engineers to create good technical solutions to problems and ship code quickly to our customers.


Qualifications and Skills

  • Experience with cloud computing and container-based distributed systems (Docker).
  • Experience working with relational databases (preferably MySQL) and high proficiency with SQL.
  • Understanding of higher level RDBMS concepts (locking and transaction model, isolation levels, deadlocks, etc.).
  • Significant experience with at least one dynamically typed, object-oriented programming. language ( preference for Python).
  • Great understanding of distributed systems and microservice architecture.
  • Hands-on experience in using message brokers such as RabbitMQ.
  • Deep understanding of restful API development.
  • Demonstrated ability to work in a fast pace customer centric environment.
  • 5+ years of experience in software development.
  • Excellent communication and organization skills.
  • Proven experience using code repositories such as GitHub.
  • Bachelor’s degree in Computer Science, Software Engineering, or equivalent.

Key Skills

Ranked by relevance

java python swift mysql cloud
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Posted
Jun 26, 2025
Type
Contract
Level
Mid-Senior
Location
Toronto

Industries

IT Services IT Consulting Banking Investment Banking

Categories

Information Technology

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