James Sperring

James Sperring

B2B SaaS Fractional CTO & Delivery Constraint Specialist

UK & US B2B SaaS • Audit Sprint first

[email protected]
linkedin.com/in/jamessperring
On request after intro call

Find the constraint slowing your SaaS delivery.

I help B2B SaaS leaders diagnose why delivery has slowed, identify the decisions blocking progress, and create a practical 90-day plan to restore flow, reduce release risk, and ship value sooner.

Key Outcomes

80%
Lead time reduced
delivery system redesign
3-10x
Deploy frequency
handful per year to multiple per week
50%
Ops toil reduced
less operational drag
$10k+
Saved per release
manual release involvement removed

Results vary by context.

The Audit Sprint

Delivery Constraint Audit Sprint
2-3 week diagnostic for B2B SaaS teams with slow or risky delivery
Constraint diagnosis
The bottleneck slowing delivery, with evidence
Delivery flow map
Where work waits, loops, or accumulates risk
Decision and ownership map
What needs deciding and who owns the trade-offs
90-day execution plan
Sequenced actions, owners, impact, and metrics
Pricing
Fixed fee from £7,500 + VAT

How It Works

Fit call (30 minutes)

Confirm whether the problem is likely a constraint/system issue and whether I am the right person to help.

Audit Sprint (2-3 weeks)

Diagnose the bottleneck, map risks and decisions, and produce a practical 90-day plan.

Lead & Enable (90 days)

Help the team implement the most important changes and make progress visible.

Best Fit / Not Fit

Works best if
  • You already have engineers
  • Delivery has slowed despite capable people
  • Leadership is willing to change ownership or sequencing
Probably not a fit if
  • You mainly need extra developers
  • You are pre-PMF and still searching for the product
  • You want someone to bless decisions already made
If you want more help after
  • Lead & Enable for 90 days
  • Fractional CTO / Advisory
  • Interim CTO, scoped individually

Method

FlowOwnershipArchitectureOperating rhythmMetricsTheory of ConstraintsTeam TopologiesDomain-Driven DesignDevExData & integrations

Tech Stack

ReactNestJSNodeTypeScriptPostgres/PostGISCQRSAzureCI/CDC#/.NetSQL

Based in the UK. Comfortable with US time zones and travel.

Audit Sprint fixed fee from £7,500 + VAT. 30-minute fit calls are free.