Python Developer With Banking in Canada

VySystems; Toronto; On-site; CAD 120,000 - 160,000; Full time

Job summary

VySystems in Toronto, Canada is seeking a senior backend engineer to design, implement, and maintain cloud-based payments and financial transaction systems. You will influence platform architecture, focusing on payments and money movement, and lead the development of new features end-to-end.

Responsibilities include documenting data flows, ensuring regulatory compliance, and collaborating with cross-functional teams to deliver scalable, high-quality services.

Qualifications

• 5+ years of experience in software engineering, designing, building, deploying and maintaining cloud-based services.
• Experience designing and building backend payments flow (APIs, rails, ledgers, settlement).
• Proficiency in coding languages (Python, Next.js, React, Golang, C#) and building APIs/databases (Postgres, DynamoDB).
• Ability to translate business requirements into technical specs; strong documentation skills.
• Strong written and verbal communication; leadership without formal authority.
• Familiarity with blockchain/crypto concepts is a plus.

Responsibilities

• Design, build, and maintain backend financial and payments systems flows.
• Influence software architecture and lead design decisions for the Platform, focusing on payments and money-movement.
• Develop, test, and launch new features for the Platform.
• Document processes and key data flows; ensure regulatory compliance and audit readiness.

Skills

Backend design & architecture

Payments systems

Cloud services

Programming languages

APIs

Databases

Technical documentation

Leadership without authority

Blockchain / Crypto

Tools

PostgreSQL

DynamoDB

RESTful APIs

Job description

• Design, build, and maintain backend financial and payments systems flows (e.g., core banking, ACH, wire, card, and digital asset transaction processing).


• Influence software architecture and lead design decisions for the Platform, with particular focus on payments and money-movement systems.


• Develop, test, and launch new features and releases for the Platform.


• Document processes and key data flows


• Ensure compliance with regulatory requirements and support audit certification efforts, including documenting systems for regulatory and internal audit purposes.

Product & Requirements Enablement

• Partner with engineering, product, operations, and compliance teams to translate business needs into clear, actionable technical requirements and specifications.


• Organize and decompose business requirements into well-structured functional and technical specs that other engineers can execute against.


• Act as a bridge between business stakeholders and the engineering team, clarifying scope, surfacing technical trade-offs, and reducing ambiguity before development begins.


• Document and improve engineering processes, workflows, and SDLC practices to increase team efficiency and knowledge sharing.

Leadership & Team Enablement

• Set technical direction and best practices that enable other engineers to deliver high-quality work independently.


• Influence and align cross-functional partners and engineering peers without relying on formal authority or direct reports.


• As needed mentor engineers on logic, code quality, and requirements-writing practices.


• Make independent, sound decisions on system design and process improvements within defined parameters.

Skills and Experience

• Minimum of 5 years of experience in software engineering, including designing, building, deploying, scaling, and maintaining modern, cloud-based production services, with knowledge of service-oriented architecture.


• Proven experience designing and building backend financial or payments system flows (e.g., APIs workflows supporting core banking, payment rails, ledgers, settlement, or digital asset transaction processing).


• Proficiency writing high-quality, well-tested code using one or more languages (e.g., Python, Next.js, React, Golang, C#), building APIs, and building/using databases (e.g., Postgres, DynamoDB).


• Demonstrated ability to gather and translate business requirements into technical specifications


• Strong written and verbal communication skills, with the ability to create clear, detailed technical and functional documentation.


• Leadership and influencing skills — comfortable guiding and developing other engineers and driving alignment across teams without formal direct-report authority.


• Self-directed work style with the ability to manage multiple priorities and make sound independent decisions.


• Creativity, organization, and troubleshooting skills.


• Experience with Blockchain technology (e.g., Bitcoin, Ethereum) or crypto-forward experience, including familiarity with onchain activity and dApps or blockchain-based services is a nice to have.