Senior OneStream Developer

Salary: £40,000 - 80,000 per year

Requirements:

• We require 6+ years of experience developing and supporting Enterprise Performance Management (EPM) platforms.
• We require 2+ years of hands-on OneStream development experience.
• We require experience with alternative EPM technologies such as Oracle Hyperion/HFM, Oracle EPM Cloud, SAP BPC, IBM Planning Analytics (TM1), or similar platforms.
• We require strong experience developing OneStream Business Rules, Finance Rules, Extender Rules, Dashboard XFBRs, Cube Views, Workflows, Data Management Sequences, and integration solutions.
• We require strong programming experience with VB.NET.
• We require advanced SQL development and database skills.
• We require experience developing and supporting integrations between OneStream and enterprise applications.
• We require experience working with OneStream metadata, dimensional modeling, security, and application administration concepts.
• We require a solid understanding of financial close, consolidation, planning, forecasting, account reconciliations, and management reporting processes.
• We require experience troubleshooting, optimizing, and supporting enterprise financial applications.
• We require experience working within Software Development Lifecycle (SDLC) processes including testing, deployment, release management, and change management.
• We require strong analytical, troubleshooting, and problem-solving skills.
• We require excellent communication skills with the ability to collaborate effectively with Finance, Accounting, IT, and business stakeholders.
• We require the ability to translate business requirements into scalable technical solutions.
• We require a bachelors degree in Computer Science, Information Systems, Finance, Accounting, or a related field, or equivalent practical experience.
• Preferred: experience participating in one or more full-cycle OneStream implementations.
• Preferred: experience supporting OneStream Cloud (SaaS) environments.
• Preferred: experience with REST APIs, XML, JSON, PowerShell, or other integration technologies.
• Preferred: experience with source control and release management practices.
• Preferred: experience supporting global Finance transformation programs.
• Preferred: experience working in large multinational organizations.
• Preferred: knowledge of SAP, Oracle, Workday, or other enterprise ERP platforms.
• Preferred: experience working within distributed global teams.

Responsibilities:

• We design, develop, and maintain OneStream solutions including Business Rules, Finance Rules, Extender Rules, Dashboard XFBRs, Cube Views, Workflows, Data Management Sequences, and integrations.
• We develop and enhance solutions using OneStream, VB.NET, SQL, and OneStream APIs to support financial consolidation, close, planning, forecasting, reporting, account reconciliations, and other Finance processes.
• We build, configure, and support OneStream metadata, dimensions, hierarchies, security, and application components following established development standards.
• We develop and maintain integrations between OneStream and ERP, HRIS, Data Warehouse, and other enterprise applications using SQL, flat files, REST APIs, and integration tools.
• We collaborate with Finance stakeholders to translate business requirements into scalable technical solutions.
• We participate in solution design, technical analysis, development, testing, deployment, and ongoing support activities.
• We troubleshoot application and integration issues, perform root cause analysis, and implement sustainable technical solutions.
• We optimize application performance, calculation logic, data processing, and integration efficiency.
• We support application upgrades, platform enhancements, release management, and production deployments.
• We create and maintain technical documentation, solution design specifications, development standards, and support documentation.
• We support data governance and ensure the accuracy, consistency, integrity, and reliability of financial data.
• We collaborate with global team members, implementation partners, contractors, and business users across multiple regions.
• We participate in ongoing system enhancements, strategic initiatives, and continuous improvement activities within the Finance Systems team.
• We support critical financial close, forecasting, and planning cycles while providing production support for a global user community across EMEA, Americas, and APAC time zones.

Technologies:

• Cloud
• Data Warehouse
• ERP
• IBM
• Support
• JSON
• Oracle
• PowerShell
• REST
• SAP
• SQL
• Security
• TM1
• XML
• DevOps
• Network

More:

We are TD SYNNEX, a Fortune 500 global company operating in over 100 countries and the worlds largest IT distributor. Our diverse workforce of 24,000 employees helps us deliver top-class technology solutions that enable businesses and individuals to navigate the digital world in a safe and efficient way. This Senior OneStream Developer role sits within our global Finance transformation and Finance Systems team, supporting a reliable, high-performing EPM environment across multiple regions. We offer elective benefits tailored to your country, formal leadership and professional development programs, on-demand learning, global well-being support, diversity and inclusion initiatives, onboarding with new co-workers, and opportunities to connect through community activities and resource groups. Our values guide everything we do: Together, We Own It, We Dare to Go, We Grow and Win, and We Do the Right Thing. Location: Barcelona, Spain; Lisbon, Portugal; Basingstoke, United Kingdom; Warsaw, Poland. Full time.

last updated 34 week of 2026