Principle OneStream Engineer​/Ingénieur principal OneStream

Position: Principle OneStream Engineer / Ingénieur principal OneStream
About the Role

TD SYNNEX is seeking a Principal One Stream Engineer to be the senior technical authority for our global One Stream EPM platform. This hands-on leader will design, build, and govern scalable One Stream 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.

What You'll Do

* Lead architecture, design, development, and delivery of complex One Stream solutions across consolidations, close, planning, forecasting, reconciliations, reporting, workflows, security, and automation.

* Develop and review One Stream Business Rules,  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 One Stream 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.

What We're Looking For

* 10+ years' experience in Enterprise Performance Management (EPM) or financial systems; 5+ years with One Stream.

* Expert One Stream architecture experience, including Business Rules, Extensibility, APIs, and platform administration.

* Advanced  and scripting experience for One Stream 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.

* 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, Net Suite) and related integrations

Additional Skills & Attributes

* 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.

Working Conditions:

* Professional,…