At a Glance
- Tasks: Lead end-to-end OneStream implementations and develop innovative financial solutions.
- Company: Join a leading finance transformation consultancy with a passionate leadership team.
- Benefits: Structured training, certification support, and opportunities for career acceleration.
- Other info: Collaborative culture with mentoring and a focus on innovation.
- Why this job: Shape impactful projects and make a real difference in a high-growth environment.
- Qualifications: 3+ years of OneStream experience and strong business rule development skills.
The predicted salary is between 60000 - 80000 £ per year.
Remote with UK travel
Permanent - open to candidates with right to work in the UK
SystemsAccountants is partnering with a leading finance transformation consultancy to hire an experienced Senior / Principal OneStream Consultant. This is a hands‑on, client‑facing role delivering full‑lifecycle OneStream projects across consolidation, planning, forecasting, ESG, lease accounting and wider EPM use cases.
Joining this high‑growth OneStream partner, you’ll play a pivotal role in delivering some of the most complex and rewarding OneStream programmes in the market. Backed by a passionate leadership team, this is a chance to step into a business that’s scaling fast, investing heavily in people, and creating real opportunities for Senior and Principal‑level consultants to shape its future.
You’ll work directly with Finance, IT and C‑suite stakeholders, shaping solution design, leading workshops, building complex business rules, developing integrations, and guiding clients through deployment, go‑live and ongoing optimisation. This role suits someone who thrives across the full project lifecycle and enjoys combining technical depth with strong consulting and finance process expertise.
What You’ll Do
- Lead end‑to‑end OneStream implementations from requirements and design through build, deployment and post‑go‑live support
- Develop business rules, calculations and automation using VB.NET/C#
- Build and troubleshoot integrations from ERPs, APIs and flat files
- Run workshops with Finance and IT to translate requirements into technical solutions
- Deliver best‑practice configuration, metadata, workflow and security design
- Support UAT, cutover, go‑live and performance tuning
- Provide admin training, documentation and knowledge transfer
- Contribute to pre‑sales demos, PoCs and RFP responses
- Mentor junior consultants and support internal best‑practice development
What You’ll Work On
- Financial close & consolidation
- Planning, budgeting & forecasting
- ESG and regulatory reporting
- Lease accounting
- Workflow optimisation, automation and performance improvements
- Client enablement and long‑term value realisation
What We’re Looking For
- 3+ years’ hands‑on OneStream implementation experience
- Strong business rule development (VB.NET/C#) and integration skills
- Solid understanding of finance processes: close, consolidation, planning, forecasting, reporting
- Experience leading workshops and presenting to senior stakeholders
- Strong documentation, communication and problem‑solving skills
- Knowledge of SQL Server or similar relational/multidimensional databases
- OneStream certification(s) preferred
Why Join
You’ll be part of a collaborative, high‑performing consulting team delivering some of the most impactful OneStream programmes in the market. The business is in an exciting growth phase, backed by a leadership team with real passion, vision and momentum, investing heavily in people, innovation and capability. Expect structured training, certification support, mentoring and the chance to shape complex, high‑value transformation projects as the organisation scales. It’s a place where your ideas matter, your expertise is recognised, and your career can accelerate as fast as the company’s trajectory.
Locations
Principal OneStream Consultant in Hampshire, Portsmouth employer: SystemsAccountants
Join a dynamic and rapidly growing finance transformation consultancy that values collaboration, innovation, and employee development. As a Principal OneStream Consultant, you'll benefit from structured training, mentoring, and the opportunity to lead impactful projects while working alongside passionate leaders who are committed to investing in your career growth. This role offers a unique chance to shape the future of the business and make a significant impact in a supportive and high-performing work culture.
StudySmarter Expert Advice🤫
We think this is how you could land Principal OneStream Consultant in Hampshire, Portsmouth
✨Tip Number 1: Get Involved in Consulting Case Competitions
Look for case competitions hosted by universities and consulting firms. They’re a fab way to showcase your problem-solving skills and meet industry players. Plus, winning one can seriously boost your CV, which we know is key when applying for roles like Principal OneStream Consultant at SystemsAccountants!
✨Tip Number 2: Leverage Alumni Networks
Tap into your university’s alumni network; many consultants love to help out new talent. Reach out to alumni who are working in management consulting, they might have insider knowledge about openings at firms like SystemsAccountants or be willing to refer you for that Principal OneStream Consultant position!
✨Tip Number 3: Attend Industry Events and Conferences
Keep an eye on management consulting events, workshops, or panels. These are prime opportunities to network with top professionals and get your name out there. You might even bump into someone from SystemsAccountants who’s on the lookout for their next Principal OneStream Consultant star!
✨Tip Number 4: Polish Your Consulting Skills Online
Engage with online platforms that offer consulting simulations or courses. Prove your chops by completing relevant projects — this not only beefs up your experience but also gives you concrete examples to chat about during interviews for that full-time Principal OneStream Consultant role at SystemsAccountants!
We think you need these skills to ace Principal OneStream Consultant in Hampshire, Portsmouth
Some tips for your application 🫡
Show Your Problem-Solving Skills:In management consulting, it's all about problem-solving—so make sure your CV highlights your analytical and critical thinking skills. Include examples from your studies or previous roles where you tackled complex issues or came up with innovative solutions. Quantify your achievements whenever possible to demonstrate your impact!
Tailor Your Cover Letter:Your cover letter is your chance to explain why you're a perfect fit for the consulting world. Focus on your motivation for joining the industry and how your skills align with the requirements of the role at SystemsAccountants. Remember to mention any relevant coursework or projects that showcase your understanding of strategic frameworks or business models!
Highlight Team Experience:Consultants often work in teams, so it's vital to showcase your collaborative skills. Include experiences where you've worked effectively with others, whether in academic group projects or internships. Discuss your role in the team and how you helped achieve common goals, demonstrating you can thrive in a consultancy environment.
Professionalise Your Online Presence:Make sure your LinkedIn and any other professional profiles are up to date, reflecting your career aspirations in management consulting. Connect with industry professionals and follow relevant groups—show you’re serious about entering this field. Applying through our website is a great way to get noticed, so showcase your personality and enthusiasm there!
How to prepare for a job interview at SystemsAccountants
✨Master the Case Study Game
In management consulting, case study interviews are all the rage. Make sure to practice structuring your thoughts and analysing data on the fly. Use resources like example case studies to get comfortable with frameworks and solutions. Remember, it’s not just about getting the right answer but showcasing your thought process, so talk us through your reasoning!
✨Know Your Numbers
Be prepared for some numerical and analytical questions. Brush up on your mental math and be ready to interpret data from charts or graphs. We might throw some business scenarios at you that require a quick turnaround on numerical analysis, so practice these skills to feel confident and swift!
✨Show Your Leadership Flair
As this is a full-time role, we want to see your potential as a seasoned consultant. Be ready to discuss experiences where you've led a project or a team. Think about times you've influenced decisions or navigated challenges—this is your chance to show how you can thrive in a fast-paced, collaborative environment.
✨Be a Cultural Fit
We’re not just looking for brains; we want to see if you vibe with our company culture at SystemsAccountants. Prepare to share how your values align with ours. Have a think about what makes a great team environment for you and how you can contribute to that. A good cultural fit goes a long way in management consulting!
