About Ensek
Ensek builds the cloud‑native SaaS software that’s transforming how energy retailers operate, innovate and manage at scale.
We help retailers lower operating costs, improve billing accuracy for consumers, and enhance customer experience through automation and AI‑driven insight, all underpinned by modern, cloud‑native architecture.
Ensek is at an exciting inflection point as we scale at pace towards new international horizons. If you’re driven by solving complex, real‑world problems and want to build modern technology that accelerates the global energy transition, you’ll feel right at home with us.
About the role
As ENSEK’s Senior Third Party Supplier Manager, you’ll own our relationships with external technology and SaaS partners end‑to‑end. You’ll make sure every partnership delivers maximum performance, value, and minimal risk — from supporting teams with pricing and service negotiations to complex in‑life contract management, SLA oversight, and renewals.
Key responsibilities:
Contract negotiation:Partner with functional leadership, Legal, Risk and Finance teams to secure strong commercial terms, clear SLAs, competitive pricing, and well‑managed risk
Relationship management:Act as the main contact for vendors, building trusted, long‑term partnerships.
Performance management:Design and build a strong vendor performance process that includes measurement against SLAs and KPIs, using scorecards to ensure quality, value and delivery.
Risk mitigation:Identify and address financial, compliance or security risks to maintain a resilient, scalable global supply chain.
Cost optimisation:Consistentlyreview spend and market trends to spot savings opportunities, consolidate vendors, or source alternatives.
Lifecycle ownership:Manage onboarding, ongoing performance, renewals and off-boarding.
Internal collaboration:Partner closely with Risk, Finance, Legal and functional teams to align vendor strategies with operational, regulatory and data‑privacy needs across new territories.
Key outcomes:
Fast, consistent onboarding/offboarding processwith tight alignment across Finance, Risk, InfoSec and Legal.
A high‑performing supplier base that meets or exceeds SLAs/KPIs and scales seamlessly across territories.
Clear risk mitigations in place for high‑risk suppliers, backed by strong due‑diligence and continuous assurance.
Tangible cost savings and value gainsthrough renegotiation, consolidation, and smarter sourcing.
Aligned vendors that are fully capable of supporting new‑market expansion with the right compliance, data‑handling and support models.
Experience required:
Proven supplier management experience in SaaS, tech, or B2B services.
Strong analytical skillsto assess vendor performance, market trends and financials to drive cost and quality improvements.
Exceptional stakeholder management skills having worked across Finance, Legal, InfoSec and wider teams previously
Solid understanding of risk, due‑diligence and compliance frameworks(privacy, security, regulatory).
A track record of negotiating commercial contracts, SLAs and renewals.
Experience managing multi‑territory suppliers or supporting international expansion.
Company Benefits
25 days’ holiday + bank holidays
Option to buy or sell 5 extra annual leave days per year
Vitality Health Insurance, including private healthcare, virtual GP access, mental‑health support and wellbeing perks (50% off gym memberships-Virgin Active, Nuffield, PureGym)
Pensionwith5% matched contribution
Regular team‑wide and company‑wide events
2 volunteering days per year to give back
Remote‑first working environment with offices in London and Nottingham
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