Consulting · Experimentation and Growth Engineering
Hands-on help building experimentation systems your team can actually trust.
I work directly with growth teams at scaling software companies to audit experimentation infrastructure, raise experiment velocity, and fix the assignment, exposure, and analysis failures that quietly invalidate results.
ARR scaled at Postman
users grown
acquisition lift at Achieve
experiments shipped across Postman, Tout, Achieve, Skipcard
Who this is for
Built for growth teams that already run experiments and need them to hold up.
Growth teams of 3 to 50+ people (engineers, PMs, analysts, QA) at scaling software companies, roughly $1M to $1B+ in revenue.
You already have feature flags and analytics, but experiments are slow to ship or the results feel untrustworthy.
You need to audit or scale experimentation across multiple teams, products, or surfaces.
You want practical systems and trustworthy results, not academic theory.
Probably not a fit: pre product-market-fit startups under $1M revenue, or teams only running marketing A/B tests on landing pages and emails without product experimentation.
What I help with
End-to-end experimentation, from infrastructure to analysis to enablement.
Experimentation audits
A systematic review of assignment, exposure, metrics, and operability for correctness. Find the bottlenecks that silently break your tests, with evidence for each finding.
Velocity and reliability
Raise experiment throughput without sacrificing rigor. Fix the SRM, exposure, and stopping-rule failures that quietly invalidate decisions.
Platform and architecture
Full-stack design from flagging and targeting to analytics pipelines, identity stitching, and guardrails. Built to scale across teams and surfaces.
Stats and analysis frameworks
Frequentist and Bayesian readouts, power and MDE, sequential testing, and clear decision criteria your team can actually run.
Vendor selection
LaunchDarkly, Optimizely, Amplitude, or homegrown. Align tooling to your roadmap, negotiate contracts and SLAs, and implement it cleanly.
Team enablement
Training and playbooks for PMs, engineers, analysts, and leadership, so decision-quality experiments scale across the whole org.
How engagements work
Most engagements start with a focused audit, then move into implementation and enablement.
Infrastructure audit
A focused review of your experimentation stack against the six pillars, delivered as a prioritized findings report with concrete fixes.
Embedded advisory
Ongoing, hands-on work alongside your growth team to build, ship, and harden experimentation systems over a defined engagement.
Team enablement
Workshops, templates, and office hours that level up PMs, engineers, analysts, and QA on growth engineering and experiment design.
The audit framework
Every audit runs against the six pillars of experimentation excellence.
Identity, assignment, and bucketing
Eligibility, exposure, and event logging
Metrics, events, and data integrity
Experiment execution and concurrency
Runtime monitoring, alerting, and debugging
Platform hygiene and operability
Who you work with
Javid Jamae
Growth engineering leader who scaled Postman from $60M to $100M+ ARR and 20M+ users as Head of Engineering for Growth. Has built and audited experimentation systems at Achieve, Earnest, and Tout. 20+ years in engineering and product leadership.
Ready to talk?
Tell me about your experimentation setup. I will tell you what is working and what is not.
15-minute call. No pitch. If we are a fit for a real engagement, we will talk next steps.
Book a 15-minute call