deepset, makers of Haystack
deepset develops open-source AI orchestration tools for building custom agents and RAG applications, with 85 employees and $45M in funding. Its Haystack framework is used by Airbus, The Economist, and European government bodies.
The growth story
deepset, makers of Haystack grew from 26 to 85 employees between 2022 and 2026, raising $45M along the way, most recently a Series B in August 2023.
About
The company sells an enterprise platform that helps organizations deploy AI applications across cloud and on-prem environments. Customers start with its open-source framework and can upgrade to paid tools for indexing, testing, and governance.
deepset raised a Series B in August 2023 and has grown to 85 staff. Its software is deployed by major enterprises and institutions, suggesting traction in regulated industries.
Founders and leadership
Engineering makes up 39% of the workforce (33 staff). The company has a flat tenure profile with a median of just 1 year at the firm.
The deepset, makers of Haystack org chart
Milos Rusic (Co-Founder & CEO) leads 35 mapped leaders with 8 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 40 (+33% YoY), Business Development 7 (0% YoY), Sales 5 (-29% YoY), Information Technology 5 (0% YoY), Marketing 4 (+33% YoY), Operations 4 (+33% YoY).
Talent flow
Employees commonly come from fintech (N26), consulting (McKinsey, Accenture), and review platforms (Trustpilot). Alumni frequently move to AI infrastructure startups like Blue Guardrails and Samsara.
Most common previous employers of deepset, makers of Haystack staff: N26 (3), McKinsey & Company (3), Accenture (3), Dreamdata (2), Trustpilot (2), Google (2). Former deepset, makers of Haystack employees most often moved to Samsara (2), Blue Guardrails (2), Neo4j (2), Google (2), H&M (1), Black Semiconductor (1).
Alumni worth knowing
The deepset, makers of Haystack mafia
Former staff have founded 3 companies, including AI security startup Blue Guardrails (2 founders) and productivity tool UseLess (1 founder).
4Damian Groß, was Product Design Intern until 2021Mathis Lucka, was Lead AI Engineer until 2025Miriam Kuemmel, was Team Lead Solution Engineering until 2025Tanay Soni, was Engineering & Sales until 2026Web traffic
Traffic mix: 28% direct, 48% search, 9% social, 0% paid.
What this company is made of
Most common skills at deepset, makers of Haystack: Python (Programming Language) (37), Git (26), Project Management (25), Microsoft Office (25), SQL (23), English (21), Amazon Web Services (AWS) (20), JavaScript (20).
Where the team actually sits
deepset, makers of Haystack people are concentrated in Berlin, Germany (18), Germany (11), Berlin Metropolitan Area (8), Bavaria, Germany (5).
Search footprint
deepset, makers of Haystack attracts about 2,242 organic search visits a month, traffic worth roughly $8K a month if bought through ads. It gained 390 ranking keywords and lost 438 in the last period.
Frequently asked
deepset, makers of Haystack has 85 employees as of September 2026.
deepset, makers of Haystack has raised $45M in total, most recently a Series B round in August 2023.
deepset, makers of Haystack was founded in 2018 by Milos Rusic, Malte Pietsch.
Milos Rusic (Co-Founder & CEO) sits at the top of deepset, makers of Haystack's reporting structure, with 8 direct reports.
The most common previous employers of current deepset, makers of Haystack staff are N26 (3 people), McKinsey & Company (3 people), Accenture (3 people).
Former deepset, makers of Haystack employees most often move to Samsara (2), Blue Guardrails (2), Neo4j (2).
At least 3 companies have a founder who previously worked at deepset, makers of Haystack, including UseLess, Blue Guardrails, Sanlabs.
deepset, makers of Haystack attracts about 2,242 organic search visits a month, worth roughly $8K a month in equivalent ad spend.
The most common skills among deepset, makers of Haystack staff are Python (Programming Language), Git, Project Management, Microsoft Office, SQL.
deepset, makers of Haystack staff are concentrated in Berlin, Germany (18), Germany (11), Berlin Metropolitan Area (8).
deepset, makers of Haystack has about 40 people in Engineering, up 33% over the past year, as of September 2026.
deepset, makers of Haystack has about 7 people in Business Development, up 0% over the past year, as of September 2026.
Computed from 77 current and 76 former deepset, makers of Haystack profiles, as of September 2026. Source: Crustdata.
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