Curriculum Vitae

Chief Technology Officer. B2B SaaS. Product engineering.

Copenhagen, Denmark ·soeren@oexenhave.dk ·linkedin.com/in/oexenhave

Profile

CTO with over 15 years in B2B SaaS, progressing from developer to CTO at TimeLog across 12 years, experiencing the full arc from 24-person startup through venture-backed growth to 120 FTEs and a right-sizing to 75, before joining Zylinc in 2024.

I bring a steady, strategic approach to engineering leadership: I recognise patterns others miss, in systems, teams, and processes, and use those insights to design scalable platforms, drive automation, and create the conditions where great engineering thrives.

I lead organisations through the shift from project-driven delivery to genuine product engineering, drawing on practical experience with scaling, right-sizing, and compliance. Technically grounded in .NET/C#, cloud-native architecture, event-driven systems, and containerised infrastructure at scale.

Core skills

Leadership
Engineering team leadership, 1:1 coaching, OKRs, career ladders, stakeholder alignment
Backend
.NET / C#, REST APIs, event-driven architecture, RabbitMQ, IdentityServer
Product
Product engineering (Cagan/Empowered), discovery and delivery, roadmapping, ADRs
Infrastructure
Docker Swarm, Azure, CI/CD, ELK stack, containerised multi-tenant SaaS at scale
Compliance
ISAE-3000 Type 2, ISAE-3402 Type 1 and 2, security assessments, audit management
Frontend
React, TypeScript. Architectural oversight and standards, not day-to-day delivery
AI in operations
Developer tooling adoption (Claude Code, Copilot), team AI practice change, workflow integration, AI-native engineering habits
AI in product
AI-assisted product discovery, rapid prototyping, AI tooling strategy for B2B SaaS

Experience

CTO at Zylinc

Feb 2024 – PresentCopenhagen, Denmark

Cloud-native contact centre platform for enterprise customers primarily in Denmark. ~35 employees, 200 tenants.

  • Lead a 14-person engineering team across backend, frontend, and DevOps in a flat structure with no intermediate management layer.
  • Define and drive technical strategy for a cloud-native communication platform serving enterprise contact centres across Europe.
  • Led platform infrastructure programme covering 5 production swarms, 200 tenants, and 5,000 containers across 35 servers.
  • Drove compliance programme achieving ISAE-3402 Type I and Type II in collaboration with the CISO.
  • Introduced product engineering methodology (Cagan/Empowered) and monthly innovation days to increase engineering autonomy and velocity.
  • Drove AI adoption across the engineering team, establishing Claude Code and AI-assisted tooling as standard developer practice, with measurable change in how the team approaches daily tasks and problem-solving.
  • Established engineering career paths, structured 1:1 programme, and OKR-based goal alignment across the team.

CTO at TimeLog

Oct 2022 – Feb 2024Copenhagen, Denmark

Project management and time tracking SaaS for professional services firms. Venture-backed; grew from ~24 to 120 employees, right-sized to 75 during tenure.

  • Stepped in as Acting CTO during a critical leadership transition (Oct 2022), maintaining delivery continuity across 28 engineers with no disruption; formally appointed CTO in Jan 2023.
  • Led a team of 2 team managers and 28 engineers; owned stakeholder alignment with Customer Success and Product Management.
  • Drove product engineering transformation, introducing Cagan/Empowered methodologies and elements of Shape Up.
  • Expanded automation and control of the customer product lifecycle through purpose-built internal tooling (Account Portal, TCAM).
  • Maintained ISAE-3000 Type 2 and ISAE-3402 Type 2 accreditation in collaboration with the CISO.
  • Built and coached an engineering career ladder; led regular 1:1s and personal development discussions with team managers and engineers.
  • Developed technology sunrise/sunsetting plans to rationalise the platform’s technology mix.

Tech Lead at TimeLog

Sep 2018 – Oct 2022Copenhagen, Denmark

  • Developed a 24-month technical roadmap providing clear strategic direction across multiple concurrent product streams.
  • Introduced rigorous code quality practices, reducing bugs and improving maintainability across all products.
  • Enhanced development frameworks — documentation, testing, and deployment — to improve team efficiency and reliability.
  • Ran technical concept sessions and hands-on workshops, building shared practices and continuous learning culture.
  • Built and maintained an internal engineering knowledge base covering principles, ADRs, coding standards, and onboarding content: the team’s primary reference for decisions and process.

Solution Architect at TimeLog

Jan 2012 – Sep 2018Copenhagen, Denmark

  • Evaluated and implemented new frameworks, patterns, and infrastructure; delivered proof-of-concepts with full documentation for handover to core development and DevOps.
  • Implemented key technologies including IdentityServer 4, Hypermedia REST API, ELK stack, and a custom CI/CD pipeline for a single-tenant SaaS application.
  • Conducted ongoing architectural grooming of a codebase spanning four technology generations and 15 years of history.
  • Migrated source control and build pipelines from TFS to Visual Studio Team Services; improved Git branching strategy across the team.
  • Introduced official API documentation and built SDKs for both internal use and customer integrations.
  • Served as Certified ScrumMaster for the distributed R&D team, improving process efficiency and team cadence.

Earlier career

2006 – 2023
Co-founded Lektieplan, a homework and messaging portal for Danish primary schools, built and operated alongside full-time roles for 17 years.
2009 – 2011
Videnhuset A/S / Videnhuset UK Ltd. Partner and Solution Architect working with enterprise semantic search using Autonomy/IDOL products; helped establish the UK branch.
2003 – 2010
Mindtrio. Co-founder and developer; grew a software consultancy from a side project to a full-time business before merging with Videnhuset.

Education

2003 – 2009
MSc, Telecommunications, DTU – Technical University of DenmarkSoftware engineering, distributed systems, data communication, future mobile networks.
2023
Leadership Program, Class of 2023, Viking VentureValue creation in B2B SaaS, team dynamics, self-leadership.
2013
IT Project Management, IT University of CopenhagenPMI, PRINCE2, and Scrum methodologies.