Turn Customers into Your Profit Engine
I help SaaS founders, CROs, and investors turn post-sale into a predictable growth lever - protecting revenue, improving GRR/NRR, and removing the operational drag that blocks scale. When you need senior Customer Success leadership without the cost or commitment of a full-time exec, I bring the clarity, structure, and execution to stabilise the base and create momentum fast.
My focus is extending the revenue continuum beyond marketing and sales into post-sale: clean handoffs, faster time-to-value, measurable adoption, and a repeatable renewal/expansion motion with clear ownership. The output is tighter forecasting (renewals and expansion you can trust), clearer unit economics (retention and expansion as primary efficiency levers), and an AI-ready operating system - lifecycle, metrics, cadences, and data integrity - that makes growth less about heroics and more predictable.
Retention and Expansion
Defining the systems that lift NRR, reduce churn and make renewals predictable.
Clear operating models
Team structures, workflows, customer journeys, frameworks, health scoring and reporting that give you control.
Commercial GTM rigour
Renewal playbooks, expansion motion design, and cross-functional alignment with Sales, Marketing and Product
AI-enabled execution
AI-readiness and implementations that save hours each week while improving consistency across the customer lifecycle
Turn Churn into Growth
Working across verticals ranging from MarTech to AI and ClimateTech, I’ve led Customer Success, Onboarding, Professional Services, and Support functions in multiple B2B SaaS companies across global markets. In that time I have directly expanded relationships with some of the world's most prominent logos ranging from FedEx to BBC, Barclays Bank to Inditex.
Here are a handful of results from the companies I've worked with. They represent fundamental shifts to revenue predictability, increased LTV, and operational efficiency.
120%+
Net Revenue Retention
Raised from 85% through systematic expansion and churn reduction
95%
Gross Revenue Retention
Industry-leading retention through proactive value delivery
50%
Logo Churn Reduction
Halved through early warning systems and intervention playbooks
40%
Revenue per CSM Increase
Increasing budget efficiency through scalable workflows
25%
Onboarding Time Reduction
Improving time to value for customers while decreasing costs
20%
Services Utilisation Increase
Raising billable hours and profitability
Want to tune your post-sale function as a revenue engine?
Long-term customers are the key to creating profitable growth. If you're ready to enhance your post-sale revenue engine, let's explore whether we're a good fit.
Services: Flexible CS Leadership as you Scale
I offer a variety of engagement models designed for early-stage companies that need senior expertise without the time and cost of a full-time executive hire. Each service will deliver tangible outcomes, not just advice. These are example engagements and any can be tailored to suit your needs.
Fractional CS Leadership
~1–3 days per week for 6-12 months
Senior post-sale leadership embedded in your business. Drive higher NRR and GRR, strengthen renewals, build predictable expansion, create team clarity, enter new markets, implement AI-enabled workflows, and improve cross-functional alignment.
Perfect for companies needing VP-level thinking before you can hire one.
Interim CCO / VP / Head of CS
~3–9 month full-time engagements
Stability and momentum during transitions. I step in, own the number, rebuild the engine, upskill or hire the team, and leave you with a functioning system.
Ideal for companies between leaders or preparing for a permanent hire.
Freelance Services
Ad-hoc as required
Project based engagements to solve pain-points in your business. Anything from a fresh look at your current approach, to a comprehensive redesign of your entire post-sale engine including: onboarding, segmentation, playbooks, health scoring, customer lifecycle, reporting metrics, forecasting and renewals, team structure, and implementing AI-supported processes.
Built to scale from £1M to £10M+ ARR.
The Six Pillars of a Predictable Post-Sale Engine
Retention (GRR protection)
Protecting GRR is downside control. I help leadership teams surface renewal risk early, quantify exposure, and install a repeatable retention motion, so outcomes aren’t dependent on last-minute escalation or discounting.
The result is clearer line of sight on what will renew, what may not, and what mitigations are in place, with accountability that holds across functions.
Expansion (NRR compounding)
Expansion should be a system, not a series of one-offs. I help CEOs and CROs build a repeatable post-sale growth motion: clear account growth pathways, value narratives that stand up commercially, and a mechanism to create and close expansion pipeline from the base.
The focus is compounding NRR with visibility, so you can plan growth with confidence, not optimism.
Revenue Alignment & Predictability
When teams run on different numbers, leadership loses control. I help align CS, Sales, Finance and Product around one set of definitions, one cadence, and one view of retention and expansion risk.
That creates predictability: forecasts you can defend, board updates with confidence signals, and decisions made early enough to matter, without debate about what the metrics “really mean”.
Onboarding & Implementation Efficiency
Onboarding speed and delivery consistency are commercial levers. I help reduce time-to-first-value by tightening handoffs, standardising what should be standard, and removing rework that quietly consumes capacity.
This improves early retention signals, reduces cost-to-serve, and gives leadership a scalable delivery model, so growth doesn’t automatically mean more complexity and margin pressure.
Team Structure and Operations
I help design a structure that matches your customer segments, product complexity, and revenue goals across CS, implementation, and support. That includes hiring plans, role clarity, training, and performance standards, so you can ramp faster and reduce dependency on a few experienced people.
I also focus on capacity and cost-to-serve: the processes, tools, and cadences that eliminate rework, improve productivity, and make workload predictable. The outcome is a post-sale function that scales cleanly without margin erosion, fragmented ownership, or constant reinvention.
AI Readiness
AI only creates leverage when data and workflows are real. I assess readiness across your post-sale systems: trusted definitions, truth sources, event hygiene, and the workflows that run renewals and expansion.
The output is a practical roadmap - what to fix first, what to automate safely, and where AI will genuinely reduce effort or improve decisions, without creating a noisy layer leadership can’t trust.
Let's Talk
If you're scaling and need clarity, or senior CS leadership without the cost of a full-time executive, let's talk. Feel free to select a time from the calendar or connect via LinkedIn. I take on a limited number of clients at a time to ensure deep, hands-on impact.
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© James Leslie 2025
