[spert.ai] // 2026_
Spert is the company of Martijn Jegerings. It helps brands grow eCommerce revenue and enlarge their digital footprint — hands-on, from audit to execution, with AI where it actually moves the needle.
Full-funnel growth for D2C brands: strategy, conversion, retention. From audit to double-digit growth.
Practical AI: agents, dashboards and workflows that save hours every week. Built, not talked about.
Tech stacks, platform migrations, team setups. Modern foundations a brand can grow on.
One view of the truth across channels. Decisions based on data, not opinions.
Interim or fractional leadership for eCom and digital teams. Senior direction without the full-time hire.
Full audit of eCom and digital performance, followed by interim DTC leadership: paid media, email/CRM, agency alignment and conversion UX. Back on track to double-digit growth, with the move to Shopify in preparation.
Brand analysis and a full rebuild of the tech stack: migration to Shopify, a custom ERP connector, and the foundations for the next phase of growth.
Designed and built an AI travel assistant for a global triathlon event brand: helping athletes get to their races with more ease. Launching soon.
An internal AI product for a Swiss multi-family office, supporting daily workflows and compliance in a FINMA-regulated environment. Fully EU/CH self-hosted, privacy-first, with strictly gated CID handling.
A sharp audit of where the business stands: channels, tech, team, numbers. Backed by 20+ years of experience — no fluff, just findings.
Strategy and hands-on execution in one: migrations, campaigns, tools, teams. Spert works project-based or as fractional leadership.
Handover to the team with the dashboards, playbooks and automations to keep growing without me.
Twenty years in eCommerce and digital, most of it in the outdoor and sports industry. Built up eCom teams, tech stacks and digital organisations at Mammut, X-Bionic and Protest Sportswear, and founded Open Wear. Work that won Webby, Lovie, Awwwards, iF, Red Dot and ISPO awards along the way.
Based in Seewis Dorf, Switzerland. When not shipping projects: on a bike, on skis, or somewhere in the mountains.
eCom from 3% to 15% of total business, and a full migration from monolith to headless.
Tripled eCom growth and migrated to Shopify.
From Kickstarter to 1M in revenue.
Launched DTC as a channel.