Principle OneStream Engineer / Ingénieur principal OneStream

TD SYNNEX•Mississauga, ON

1d•$236,000 - $245,000•Remote

About The Position

TD SYNNEX is seeking a Principal OneStream Engineer to be the senior technical authority for our global OneStream EPM platform. This hands-on leader will design, build, and govern scalable OneStream consolidations, planning, forecasting, reporting, integrations, and automation that support Finance and FP&A. You will reduce technical risk, drive platform performance and stability, mentor technical teams, and enable enterprise financial transformation. This is a high-impact role with cross-functional influence and opportunities for technical leadership and career growth.

Requirements

10+ years’ experience in Enterprise Performance Management (EPM) or financial systems; 5+ years with OneStream.
Expert OneStream architecture experience, including Business Rules, Extensibility, APIs, and platform administration.
Advanced VB.NET and scripting experience for OneStream customizations.
Strong SQL and relational database skills; demonstrated experience designing complex data integrations.
Proven track record optimizing application performance at enterprise scale.
Deep understanding of Financial Close, Consolidation, Planning, and Forecasting.
Bachelor’s degree in Computer Science, Engineering, Finance, or related field, or equivalent experience.
Excellent verbal and written communication skills; able to translate finance requirements into technical solutions and present to senior finance stakeholders.

Nice To Haves

Experience with cloud-hosted EPM deployments, automation tooling, and CI/CD for application releases.
Prior leadership in platform governance, SOX/ITGC controls, or large-scale EPM migrations.
Familiarity with ERP platforms (SAP, Oracle, NetSuite) and related integrations.
Strong attention to detail and data accuracy; proficient data-entry and record-keeping for critical financial and technical artifacts.
Advanced computer literacy and ability to use common office equipment, collaboration tools, and relevant enterprise applications.
Ability to follow instructions, work independently with minimal supervision, and proactively request clarification when needed.
Exceptional problem-solving, critical thinking, decision-making, and prioritization in high-pressure, deadline-driven environments.
Effective multitasking, time-management, and organizational skills to drive tasks to completion across competing priorities.
Adaptable to change, resilient under stress, and able to flex with evolving project roadmaps and business needs.
High professional and ethical standards, including maintaining confidentiality of sensitive data and compliance with governance requirements.
Strong interpersonal skills: build collaborative relationships across teams and interact confidently with managers and senior leaders.
Comfortable participating in extended phone/virtual sessions or wearing headsets for detailed technical discussions.

Responsibilities

Lead architecture, design, development, and delivery of complex OneStream solutions across consolidations, close, planning, forecasting, reconciliations, reporting, workflows, security, and automation.
Develop and review OneStream Business Rules, VB.NET extensions, APIs, and automation frameworks to meet global finance requirements.
Define and enforce technical standards, metadata design, release/deployment controls, and platform governance to ensure performance, scalability, maintainability, and security.
Design and govern enterprise integration patterns between OneStream and ERP, data warehouse, BI/analytics, and HR systems (ETL/ELT, APIs, SFTP).
Own platform performance optimization (calculations, memory, metadata), incident escalation, root-cause analysis, and remediation for high-risk production issues.
Produce architecture artifacts, runbooks, migration plans, and governance documentation to support audits, SOX/ITGC, disaster recovery, and operational continuity.
Provide hands-on technical leadership and mentorship to internal developers and third-party integrators; collaborate closely with Finance Systems leadership, IT, Infrastructure, Cybersecurity, and vendors.