A funded team is approaching diligence or a board decision
The product works, but architecture, security, delivery risk, or hiring cannot be explained cleanly. We turn the technical state into decisions and evidence, then own the remediation order.
FRACTIONAL CTO · Vienna
Fractional CTO Vienna
Christof's home · on-site as surchargeable add-on
Remote first, with Christof based in Vienna. Use paid on-site time for the conversations that benefit from a room: board reviews, hiring panels, vendor decisions, and technical due diligence.
Reply within 4 working hours. Usually within 1.
AwardedTop 100 Young Companies in Austria. #36 in 2024, #58 in 2023 (GEWINN magazine).
Shipped75+ products, 5+ years, across 17 countries.
LanguagesDeutsch, English.
ReviewsGoogle 4.7 stars. Trustpilot 4.5 stars.
Working with Wavect in Vienna
Vienna gives Wavect one practical advantage: Christof is based here. A board review or hiring panel can happen on-site without turning the retainer into an open-ended presence contract.
The city runs an international startup ecosystem. ViennaUP reported more than 14,000 participants from over 90 countries across 65 events in 2026. That says something about the density and international reach of the ecosystem. It does not prove that every Vienna startup is funded, regulated, or ready for a CTO.
Our line is simpler: bring us in when technical decisions need one accountable owner. We document the decision, its trade-offs, and who has to deliver it. No innovation theatre, no outsourced title with no authority.
Two Vienna situations where CTO authority matters
The common thread is not company size. It is technical accountability under stakeholder pressure.
Internal engineers and vendors are pulling in different directions
A roadmap exists, but nobody has the authority to settle build-versus-buy, integration, platform, or ownership disputes. We make the call and stay accountable for the technical outcome.
The first 30 days with a Vienna team
The output is a functioning decision system, not a slide deck about digital transformation.
- Establish the technical truthReview code, infrastructure, incidents, vendors, security obligations, delivery promises, and what the board currently believes.
- Close the decision backlogResolve the architecture, ownership, hiring, and vendor questions blocking the next milestone.
- Make reporting usefulIntroduce a short board-ready risk view, named owners, and a weekly engineering cadence that exposes slippage early.
Does the Vienna gap sit in product or engineering?
Hire the Fractional CTO when architecture, delivery, hiring, vendors, or production have no owner. Hire the Fractional CPO Vienna when the post-PMF roadmap and discovery cadence are the problem. Use the Fractional CTPO when one person must own both.
// SOURCESWhat we use for Vienna context
We use these sources for local context. They do not imply a partnership, endorsement, office, or client relationship.
- City of Vienna: ViennaUP 2026Official city report on the scale, international participation, and programme of ViennaUP 2026.
Engagement tiers and transparent pricing
Four ways to start. Each one has a clear scope and a clear cancellation policy. No hours tracked, no surprise invoices.
CTO-on-Call
Async architecture review, hiring panels, tech decisions on demand.
FROM
€2,500/ month
Start here →Embedded Fractional CTO
Lead the engineering org. Roadmap, hiring, vendor management, production accountability.
FROM
€12,000/ month
Start here →Tech Due Diligence
Fixed-price diligence for fundraising or M&A. Architecture, code, team assessment, investor-ready report.
FROM
€8,000fixed
Start here →Discovery + Roadmap
Two to three week deep-dive into a single product or transformation. Architecture, milestone plan, fixed-price build offer.
FROM
€3,500fixed
Start here →Fixed-price engagements are signed SoW (Werkvertrag). Wavect is legally bound on scope and deliverables. Retainers cancel weekly with no notice.
// 03How the network model works
Three things that make this different from hiring one consultant with one calendar.
You hire two founders, not one consultant.
Kevin and Christof are on every engagement. One is your product and CTO interface, the other is the senior engineer in the room. No account-manager handoff, no junior on the call after week three.
The bench scales when the work does.
15+ specialists we have shipped production work with. Security, zero-knowledge, mobile, ML, IoT. They plug in under the Wavect SoW. One contract, one invoice. We stay accountable for the outcome.
You stay in control of the contract.
Werkvertrag for fixed-price builds (signed scope, legally bound). Retainer for ongoing work (cancel any week). No hour tracking. No scope-creep invoices. The price you sign is the price you pay.
Who is in the room
Two managing directors. Both technical. Both on every engagement.
Kevin Riedl
Managing Director, Operations and Product
- Lectures Blockchain at MCI Innsbruck.
- 150+ podcast episodes on Web3, AI, and product.
- 75+ products shipped across 17 countries.
Christof Jori
Managing Director, Software
- Architecture lead across Web3, AI, and reliability.
- 10 years cross-domain engineering.
- FH Kufstein Tirol graduate.
Looking for a different city?
Fractional CTO Innsbruck →Fractional CTO Tirol →Fractional CTO Graz →Fractional CTO Linz →Fractional CTO Salzburg →Fractional CTO Munich →Fractional CTO Zurich →
Back to Austria →
// proof
Proof, not promises
4 years
Inside the City-Scale Build
Smart City IoT for Innsbruck: hardened LoRaWAN infrastructure, evaluated and integrated multi-vendor devices, wrote the per-device …
Kubernetes
LoRaWAN
Docker
2 months
0 to Enterprise
Institutional bond analytics platform, zero to enterprise-ready in 2 months; raised multiple rounds.
NestJS
React
Typescript
7 services
Unified Testing
1.5 years owning QA across seven services and multiple vendors. Quality stayed shippable through every refactor.
React
Java/Kotlin
Go
These are selected projects, not our full portfolio. We have shipped 75+ products since 2018.
What clients say
LinkedIn
If you're thinking about digitization of your company, tokenization, coding... you name it, I'd strongly recommend to get in touch with Kevin. His knowledge in the field is unparalleled and working with him a sheer pleasure as he is a super nice guy, strategic thinker and proactively hard worker. Thanks for your brilliant work Kev!
LinkedIn
I got to know Kevin around 1 year ago and have been working together with him since then. His vast knowledge in tech and programming combined with his business acumen makes him the go-to person for me in regards to any tech-related topics. Regardless if it is a project in the field of blockchain, IoT, or any other software development domain, I can recommend reaching out to Kevin to benefit from his tech know-how and a business relationship based on trust and customer centricity.
Trustpilot
Excellent work. The collaboration was very pleasant and you always had the feeling of being in good and capable hands.
Independently rated 5.0/5 on Clutch Read the reviews
Fractional CTO Vienna: local questions
Local access without a fake office story.
Two founders. One number. Reply in four hours.
Reply within 4 working hours. Usually within 1.