Senior Business Systems Analyst – Mainframe & API

Job summary

The role involves bridging business and technology teams to translate complex requirements into functional specifications and BDD-based user stories. You will support API and Mainframe initiatives while maintaining requirements traceability throughout the design, testing, and deployment phases.

Job details

Senior Business Systems Analyst – Mainframe & API Location: Toronto or London, ON – Hybrid, 4 days onsite Duration: 12 months, with potential extension/conversion Hours: 37.5 hours/week The Role We are seeking a Senior Business Systems Analyst to join an Agile technology team supporting critical customer data platforms. The team is focused on enabling consumers to onboard to API endpoints used to inquire and maintain customer data, while also supporting ongoing Mainframe/Host initiatives. You will bridge business and technology teams, translating complex requirements into clear functional specifications and BDD-based user stories. You will work closely with Product Owners, Architects, Engineers, QA teams and business stakeholders throughout design, testing and deployment. Key Responsibilities Gather, analyze and document functional and non-functional system requirements. Translate requirements into detailed JIRA user stories and acceptance criteria using BDD methodology. Perform current-state, future-state and gap analysis. Support API and Mainframe/Host initiatives from requirements through testing and implementation. Maintain requirements traceability across design, development, testing and deployment. Partner with QA teams on test scenarios, expected results and defect resolution. Collaborate with technical and business stakeholders in a Scaled Agile environment. Must-Have Skills 8+ years of Business Systems Analyst experience. Hands-on experience inquiring and maintaining data through Mainframe screens – required. Hands-on experience inquiring and maintaining data using APIs/Postman – required. Strong experience working within a Scaled Agile framework. Strong understanding of Behavior-Driven Development (BDD) and writing user stories. Strong JIRA and Confluence experience. Strong testing and gap-analysis experience. Excellent stakeholder management, communication and problem-solving skills. Engineering/technical mindset with the ability to bridge business requirements and technology solutions. Nice to Have Customer data/platform experience. Banking or financial-services experience. Microsoft 365 Copilot or GitHub Copilot exposure. Business Analysis certification. Note: We use AI tools to: obtain basic information, detect plagiarism, false employment history or references, categorize your skills, and do an initial match with job posting.

What you’ll do

The role involves bridging business and technology teams to translate complex requirements into functional specifications and BDD-based user stories. You will support API and Mainframe initiatives while maintaining requirements traceability throughout the design, testing, and deployment phases.

Requirements

Candidates must have 8+ years of experience as a Business Systems Analyst with hands-on expertise in Mainframe and API data management. Proficiency in Scaled Agile, BDD methodology, and JIRA/Confluence is required to succeed in this technical environment.

Listed skills

• Data analysis · Preferred
• Jira · Preferred
• Stakeholder Management · Preferred

Other relevant skills

Identified from the job description. Confirm important requirements above.

• Business Systems Analysis
• Mainframe
• API
• Postman
• Scaled Agile
• Behavior-Driven Development
• JIRA
• Confluence
• Gap Analysis
• Stakeholder Management
• Requirements Documentation
• Functional Specifications
• User Stories
• Testing
• Data Analysis

Job areas

• Technology
• Software
• Data & Analytics
• Consulting