Building the teams that build the platforms

Vasileios Fasoulas

Product Engineering leadership for orgs that build platforms, not just features.

A Leader with over two decades building and operating teams, scalable platforms, and digital products across start-ups, scale-ups and enterprise environments.

From fast-moving, hands-on product teams to globally distributed programmes of 100+ people; with architecture expertise that moves between hands-on delivery and long-range strategy, tested across multiple stacks and clouds.

With recent focus on AI-native and agentic software development: AI-assisted engineering workflows, autonomous agent systems, LLM orchestration, and spec-driven approaches that tighten the loop between product and engineering.

A consistent view across two decades of change: stacks and frameworks turn over, but peopleware, product thinking and execution discipline are what actually make digital products and orgs successful.

Email ↗ LinkedIn ↗ Github ↗
20+Years in industry
250+Engineers led
40+Global brands
5Business replatforms

Experience

Reverse chronological
Sept 2025 — Present
Current

Founder and CTO

Alpha44

  • Offering frational CTO services to agencies and startups
Nov 2025 — May 2026

Head of Engineering

Meshx

  • Own engineering's daily operations and alignment with company objectives
  • Set engineering strategy to enhance product development and innovation
  • Guide design and execution of engineering projects against quality and timeline standards
  • Accelerated delivery cycles using AI agents and spec-driven development, increasing sprint velocity by 200%
  • Championed AI agents for ChatOps, extending DevOps knowhow and capability across the organisation
  • Directed development of agents spanning the full software development lifecycle, from ideation to deployment
Feb 2024 — Sep 2025

Head of Engineering

Heat Geek

  • Designed and delivered an API-first, multi-tenant architecture for partner integration
  • Introduced event-driven thinking to the organisation, educating the team on event storming and modelling
  • Oversaw architecture of the next-generation platform: event-sourced, CQRS-based, built alongside The Composable Architecture (TCA) for iOS
  • Led AI and process automation for third-party integrations
  • Brought engineering rigour to exploratory Data Science work, hardening it for production
Nov 2021 — Nov 2023

Chief Technology Officer

Sliide

  • Transitioned from Chief Architect with no team or budget to full accountability for engineering, on the strength of recognised impact
  • Responsible for QA, Data Engineering, DevOps, Mobile Apps and Platforms (headcount: 72, direct reports: 5)
  • Set technology strategy underpinning all roadmaps and development
  • Partnered with the Chief Product Officer to align product vision with technology vision, including platform-as-a-product initiatives
Feb 2021 — Nov 2021

Chief Architect

Sliide

  • Gave architectural leadership, design and approval for all significant projects
  • Guided the development team with reference architectures
  • Developed technology roadmaps for the organisation
  • Sat on the senior management team as direct liaison with senior business stakeholders
Jul 2019 — Feb 2021

Technical Director

Digitas — Formula 1 account

  • Owned technology direction for the agency's flagship F1 account
  • Managed onshore and offshore delivery across front end, back end, native mobile and data/analytics
  • Combined Azure, AWS and GCP to deliver two headless F2/F3 sites on Next.js with CloudFront and Lambda@Edge
  • Provided technical consultancy to F1 and coordinated solution design across multiple partners and vendors
  • Reported jointly to the Head of Technology and Chief Product Officer, triaging initiatives across product, tech and delivery
2018–19Technology PrincipalIdean
2017–18Technical DirectorThe BIO Agency: Arrow Electronics
2014–17Technical DirectorPossible: Manchester City, Aston Martin
2012–14Technical DirectorRadley Yeldar: GSK
2011–12Technical ArchitectBBC Worldwide
2010–11Technical Director (Contract)VCCP
2009–10Senior Technology Lead & Solutions ArchitectR/GA
2008–09Technical ArchitectRazorfish
2007Integration Consultant (Contract)London Capital Group
2007Business Analyst Consultant (Contract)Morbus Consulting / Defra
2006–07Web Services / SOA ResearcherCity University
2005–07Visiting TutorCity University
2000–01Software Engineer (Placement)CERN
1999Systems Analyst (Contract)Pylon-Engineering SA

Skills

Leadership & Delivery

Engineering strategy · Technology roadmaps · Stakeholder management · Onshore/offshore delivery · Vendor/partner management

Cloud & Platforms

AWS · Azure · GCP · Multi-cloud strategy · Serverless · FinOps · Scaling

AI & Agentic Engineering

AI-assisted engineering workflows · Multi-agent orchestration · Spec-driven development · Agentic ChatOps & SDLC automation

Data & Engineering Practice

Data Engineering · Event sourcing · DevOps · CI/CD · QA & testing culture · Systems Hardening

Architecture & Patterns

Event-driven architecture · CQRS · Event storming · API-first · Multi-tenant design · Ref architectures

Frontend & Mobile

SPA · Typescript · Next.js · React Native · iOS (TCA) · Android (Jetpack Compose, MVI)

Education

MSc Business Systems Analysis & Design

City St George's University

Graduated with Distinction. Thesis: Web Services Monitoring — awarded best computing project of the year.

BSc (Hons) Software Engineering

Brighton University (Sandwich)

Graduated with Honours (2:1). Dissertation: Web Services — Which Is Their Role in Enterprises.