Senior Software Engineer I

Senior Software Engineer

Location:                   Remote, USA

Compensation:       $138,000.00-$172,250.00  

Benefits Offered:    Vision, Medical, Life, Dental, 401K (Range applies to US candidates only) + Benefits/Variable Comp/Equity - Range may vary based on experience. 

Employment Type: Full-Time

Summary

The Senior Software Engineer designs, develops, and delivers complex features and services within the OneStream Platform and Marketplace solutions, leading moderately to highly complex work that drives scalability, performance, and maintainability. This role owns features end‑to‑end, makes technical decisions within owned areas, and ensures well‑designed, backward‑compatible APIs and data contracts. The Senior Software Engineer mentors Software Engineers, leads code reviews, collaborates cross‑functionally on technical solutions, and is accountable for production quality, reliability, and continuous improvement of engineering practices.

 Primary Duties and Responsibilities

• Design, develop, and maintain complex software features and services within the OneStream platform and Marketplace ecosystem.
• Lead implementation efforts for moderately to highly complex features, ensuring scalability, performance, and maintainability.
• Drive technical design discussions and contribute to architectural decisions.
• Build and maintain UI solutions using Angular, React, Blazor, and other .NET UI technologies.
• Make and defend technical decisions within owned areas while aligning with broader architectural standards.
• Ensure XML and JSON data contracts, schemas, and integrations are well designed, documented, and backward compatible.
• Design and evolve APIs, SDKs, and extensibility mechanisms used by internal teams and Marketplace partners.
• Proactively identify opportunities to improve system performance, reliability, and developer productivity.
• Lead and participate in formal code reviews; act as a trusted reviewer and approver.
• Mentor and support Software Engineers through guidance on design, coding standards, and best practices.
• Collaborate cross-functionally to translate business requirements into technical solutions.
• Contribute to CI/CD improvements, automation, and quality initiatives.
• Own complex features and components end to end, including design, implementation, testing, deployment, and ongoing production support.

Required Education and Experience

•   Bachelor’s degree in Computer Science, Engineering, or a related technical field, or equivalent experience.
• 4–8 years of professional software development experience.
• Strong proficiency in C#, VB.NET, .NET, ASP.NET, Blazor, and related frameworks.
• Experience with UI technologies including Angular, React, WPF, XAML, and web standards.
• Deep understanding of RESTful API design and service-oriented architectures.
• Strong experience designing, maintaining, and evolving XML and JSON data contracts in enterprise applications.
• Experience with performance tuning, memory management, and SQL query optimization.
• Strong experience with Git-based workflows and CI/CD pipelines.
• Experience reviewing unit tests and ensuring adequate test coverage.

Preferred Education and Experience

• Experience building extensible platforms, frameworks, or Marketplace solutions.
• Familiarity with SaaS architectures, distributed systems, or multi-tenant applications.
• Experience with deployment automation and DevOps practices.
• Domain experience in financial systems, EPM, or CPM solutions.
• One or more Azure certifications.

 Knowledge, Skills, and Abilities

• Strong software design and architectural thinking skills.
• Ability to independently own and deliver complex features.
• Proven ability to mentor engineers and influence technical direction.
• Excellent analytical and troubleshooting capabilities.
• Ability to communicate complex technical concepts clearly to diverse audiences.
• Ability to balance feature delivery with long‑term maintainability, scalability, and operational quality.
• Strong sense of ownership, accountability, and continuous improvement.

 Travel

• Regular travel is not expected for this position.

 Who We Are

OneStream is how today’s Finance teams can go beyond just reporting on the past and Take Finance Further™ by steering the business to the future. It’s the only enterprise finance platform that unifies financial and operational data, embeds AI for better decisions and productivity, and empowers the CFO to become a critical driver of business strategy and execution. Our vision is to be the operating system for modern finance, digitizing core financial functions and empowering the CFO to become a critical driver of business strategy. To learn more visit www.onestream.com.

Why Join The OneStream Team

• Transparency around corporate structure, salary, and benefits.
• Core value of customer success.
• Variety of project work (not industry-specific).
• Strong culture and camaraderie.
• Multiple training opportunities.

Benefits at OneStream  
OneStream employees are passionate, hardworking individuals who go above and beyond to keep our customers happy and follow through on our mission statement. They consistently deliver the best and in turn, we make every effort to keep them cared for and happy. A sample of the benefits we provide are:

• Excellent Medical Plan.
• Dental & Vision Insurance.
• Life Insurance.
• Short & Long Term Disability.
• Vacation Time.
• Paid Holidays.
• Professional Development.
• Retirement Plan.

#LI-Remote #LI-KA1

All candidates must be legally authorized to work for any company in the country where this position is located without sponsorship.

OneStream is an Equal Opportunity Employer.