Tessl
Tessl builds AI-powered software factory platforms that automate coding workflows and enforce quality standards across repositories. The London-based startup raised $125M in Series A funding in November 2024 and employs 64 people.
The growth story
Tessl grew from 1 to 64 employees between 2024 and 2026, raising $125M along the way, most recently a Series A in November 2024.
About
Tessl sells tools that help engineering teams automate coding processes while maintaining security and quality standards. Its platform extracts workflows from AI coding agents, enforces standards across repositories, and turns individual automations into reusable assets for entire organizations.
The company raised $125M in Series A funding in November 2024, less than a year after its founding. With 64 employees, Tessl has quickly scaled its team, though its median tenure of 1 year suggests rapid hiring.
Founders and leadership
Engineering is Tessl's largest function, with 6 employees identified in that role. The company operates with a relatively flat structure typical of early-stage startups.
The Tessl org chart
Guy Podjarny (Founder & CEO) leads 14 mapped leaders with 7 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Engineering 29 (+32% YoY), Entrepreneurship 8 (0% YoY), Arts and Design 5 (+67% YoY), Operations 4 (+300% YoY), Marketing 3 (+200% YoY), Sales 3 (+200% YoY).
Talent flow
Tessl's team comes primarily from cybersecurity and tech giants, with 13 employees joining from Snyk and smaller groups from Google, Microsoft, and IBM. Alumni have moved to companies including Google DeepMind and Port.io.
Most common previous employers of Tessl staff: Snyk (13), Google (4), Microsoft (4), Akamai Technologies (3), IBM (3), Cisco (3). Former Tessl employees most often moved to Google (2), Gruve (1), Port.io (1), Lovable (1), Google DeepMind (1), KimmiCon (1).
Alumni worth knowing
What this company is made of
Most common skills at Tessl: JavaScript (23), Leadership (22), Software Development (20), Python (Programming Language) (19), Java (19), Management (18), Agile Methodologies (18), Cascading Style Sheets (CSS) (15).
Where the team actually sits
Tessl people are concentrated in England, United Kingdom (26), United Kingdom (6), London Area, United Kingdom (4), Greater Brighton and Hove Area (2).
Search footprint
Tessl attracts about 7 organic search visits a month, traffic worth roughly $0K a month if bought through ads. It gained 0 ranking keywords and lost 3 in the last period.
Frequently asked
Tessl has 64 employees as of September 2026.
Tessl has raised $125M in total, most recently a Series A round in November 2024.
Tessl was founded in 2024 by Guy Podjarny, Aaron Sokell.
Guy Podjarny (Founder & CEO) sits at the top of Tessl's reporting structure, with 7 direct reports.
The most common previous employers of current Tessl staff are Snyk (13 people), Google (4 people), Microsoft (4 people).
Former Tessl employees most often move to Google (2), Gruve (1), Port.io (1).
Tessl attracts about 7 organic search visits a month, worth roughly $0K a month in equivalent ad spend.
The most common skills among Tessl staff are JavaScript, Leadership, Software Development, Python (Programming Language), Java.
Tessl staff are concentrated in England, United Kingdom (26), United Kingdom (6), London Area, United Kingdom (4).
Tessl has about 29 people in Engineering, up 32% over the past year, as of September 2026.
Tessl has about 8 people in Entrepreneurship, up 0% over the past year, as of September 2026.
Computed from 45 current and 21 former Tessl profiles, as of September 2026. Source: Crustdata.
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