General Index (GX) is a commodity benchmark provider based on the most data. We produce over 4,700 daily energy prices - in crude oil & refined products, biofuels, hydrogen, and carbon markets - which our clients use to make critical energy & investment decisions. GX’s unique approach collates thousands of trades from 225+ data partners and applies expert-designed algorithms based on detailed methodologies to calculate prices. GX benchmarks are robust, consistent and compliant with IOSCO and FCA requirements.
Backed at Series A by Chalfen Ventures and 20VC (Harry Stebbings), GX has an experienced team with proven leadership – as well as a rapidly growing customer and partner base. With offices in London, Krakow, Houston, and Singapore, GX continues to expand rapidly and is now hiring a Senior Customer Success Manager to support our next phase of growth.
About the role:
We are looking for a proactive and commercially minded Senior Customer Success Manager to own post-sale relationships with our clients and grow into building our Customer Success function. You will ensure our customers get maximum value from GX data, drive adoption across their organisations, and expand usage over time.
This is a hands-on role working with senior stakeholders at major accounts and collaborating internally with Sales, Product, and Data teams to deliver outstanding customer experiences and measurable results.
- Act as the main point of contact for onboarding, training, and data integration for new customers.
- Drive adoption of General Index data across client workflows, replacing legacy data sources where possible.
- Understand client business objectives and align GX solutions to support trading, analytics, compliance, and AI initiatives.
- Oversee parallel runs and benchmark migration projects.
- Proactively identify opportunities for upsell, renewal, and expansion (owning our expansion number).
- Capture client feedback and work with Product and Data teams to influence roadmap priorities.
- Build and maintain senior and operational stakeholder relationships.
- Grow the Customer Success team in line with business requirements over time, bringing in high-performing talent.
You offer:
- Proven experience in customer success, account management, or a similar client-facing role in market data, energy, or financial services in modern GTM teams.
- Strong understanding of commodities pricing, benchmarks, or trading workflows.
- Excellent relationship-building skills with both operational and executive stakeholders.
- Data-driven and numerate – allowing you to use key tools such as PostHog, HubSpot and Excel to understand account usage.
- Comfortable managing complex, multi-stakeholder projects with enterprise clients.
- Commercially minded, with a track record of driving account growth.
- Highly organised with strong communication and presentation skills.
We offer:
- Office in Covent Garden.
- Share options.
- Private healthcare.
- NEST Pension scheme.
- Regular off sites and team socials, with a positive and high-energy culture.
A diversity of identity, perspective, and experience makes us stronger. We welcome you to apply to GX regardless of your background, age, gender, ethnicity, orientation, or ability.
Don't meet all the requirements? At GX we believe that professional development happens through teaching and learning from your peers and managers. Even if you’re uncertain about whether you have the experience we’re looking for, please apply if this position sparks your curiosity and you have a real interest or passion in what we are doing.
