Customer Success Manager - B2B

Department: Customer Growth & Development
Reports to: Head of Number Operations
Location: Head Office – Leeds (LS28) UK
Contract: Full-time, Permanent

About Us

Core Telecom is a market leading and fast-moving Global Telecoms Network based in Leeds. We are dynamic, growing, and provide specialist telecommunication solutions to clients based around the world. We looking for an experienced head-office based Customer Success Manager to join the team. This is a mixed and varied proactive office-based account management & sales role with great growth potential.

Role Purpose

Manage, develop and drive growth across an assigned customer base, being their first point of contact and building relationships that promoting the full breadth of our telecom’s solutions. You’ll support their needs and identify opportunities to expand the services we offer, as well as delivering a best-in-class experience.

Key Responsibilities

• Portfolio-Led Growth

Position and sell our full product portfolio, linking solutions to customer requirements (reliability, flexibility, cost control, and customer experience).

• Customer Engagement & Planning

Conduct regular reviews with your account base, supporting their businesses with any new solutions – making sure we are their first port of call for any telephony need.

• Onboarding & Adoption

Coordinate smooth launches of any new services, (including any number transfers) and onboarding of new accounts.

• Development & Commercial Ownership

Forecast accurately, manage and present your sales pipeline and meet company targets and goals.

• Issue Management & Resolution

Partner with Support & Operations to resolve issues quickly; capture feedback and promote customer needs internally.

• CRM Excellence

Maintain accurate notes and internal communications. Ensuring all teams are aware of sensitive or large-scale projects.

Success Measures (KPIs)

• Existing divisional growth
• New account growth
• Revenue
• Retention

Candidate Profile

Experience

• 3–6+ years in Customer Success, Account Management, or Sales with revenue targets—ideally in telecoms or adjacent B2B services/technology.
• Evidence of portfolio-led selling, growing revenue in existing accounts, and managing new account development.

Skills

• Consultative sales approach; able to shape clear value propositions across multiple products.
• Strong relationship management with senior and operational stakeholders.
• Structured operator: plans well, follows through, and communicates progress.
• Commercially aware: confident in pricing discussions, proposals, and negotiation.
• Data-fluent: comfortable turning usage and service data into insights and next steps.
• Excellent written and verbal communication; confident presenter both client and management facing.

Tools

• CRM, ticketing platforms, Microsoft Office, and presentation tools.

Day-to-Day

• Reactive: Support our customers with any inbound sales requirements or solutions.
• Proactive: Contact & engage with your account base and potential customers, gauging requirements and presenting new products or services they may not be aware we offer.
• Manage: Coordinate sales projects and ongoing proposals to work to customer timelines and offer the right solution every time.
• Maintain: Accurate pipelines, forecasting, and activity records to present to management and meet clear goals & targets.

Job Types: Full-time, Permanent

Pay: From £30,000.00 per year

Benefits:

• On-site parking

Ability to commute/relocate:

• Leeds LS28: reliably commute or plan to relocate before starting work (required)

Education:

• Bachelor's (preferred)

Experience:

• Sales: 3 years (required)

Work authorisation:

• United Kingdom (required)

Location:

• Leeds LS28 (preferred)

Work Location: In person