Roman D.-CTO
Check rate
Experience
CTO
EFS
- Introduced a serverless/event-driven platform, boosting deployment frequency from 3 to 40 per month
- Implemented an LLM-based fraud-detection proof of concept that flagged 92 % of suspicious transactions
- Built performance and DORA metrics dashboards adopted by the C-suite
Interim CTO
Flightright
- Spearheaded monolith-to-microservices re-architecture, reducing average response time by 40 % and enabling weekly releases
- Productionised an LLM-driven claim-classification service that automated triage for over 100k cases, slashing manual review by 70 %
- Introduced DORA metrics and outcome-oriented OKRs, boosting eNPS from 42 to 63 within six months
Tech Advisor
InnTech Vision
- Designed a scalable RAG architecture delivering sub-1 s answers across a 100K-document corpus
- Mentored founding teams on lean delivery, hiring, and cloud cost control
- Facilitated GenAI discovery workshops that uncovered three new product lines
CTPO & Co-Founder
Man-Go
- Bootstrapped end-to-end product and infrastructure
- Championed lean engineering practices
Engineering Lead
Smava
- Managed three squads (15 engineers)
- Launched React migration
- Introduced “Focus Time” initiative
- Developed a mastery framework
Tech Lead
Höffner
- Planned monolith-to-microservices migration
- Strengthened onboarding and hiring processes
CTO & Co-Founder
DexTecnology
- Scaled team from 2 to 35 developers
- Established technology vision, strategy, and mentoring culture
Software Developer
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Banking and Finance, Retail, and Professional Services.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Strategy, Human Resources, and Business Intelligence.
Summary
Hands-on engineering leader blending 20 years of product-centric delivery with practical GenAI adoption. I design resilient cloud architectures, embed AI into business workflows, and grow motivated teams. Believer in lean, data-driven decisions and code that tells a story.
Skills
- Leadership & Product: Agile & Lean • Org Design • Remote & Hybrid Teams • Okrs • Executive-Level Stakeholder Communication
- Ai & Data Llms: (Openai Gpt, Anthropic Claude, Mistral) • Retrieval Pipelines (Langchain, Llamaindex – Basic) • Vector Store • Prompt Engineering & Evaluation • Python Data Stack (Numpy, Pandas)
- Software Architecture: Event-Driven Microservices • Domain-Driven Design • Micro-Frontends • Ci/Cd • Iac (Terraform, Cdk) • Kubernetes • Observability
- Tech Stack (Hands-On): Typescript/Node.Js • React/Next.Js • Java • C# • Python • Postgresql • Mongodb • Gcp • Aws • Azure
Languages
Education
Taras Shevchenko University
MSc · Computing Machinery & Systems · Kyiv, Ukraine
Certifications & licenses
Inspiring & Motivating Individuals
University of Michigan
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Roman is based in Berlin, Germany.
Roman speaks the following languages: Russian (Native), English (Advanced), Romanian (Intermediate), Ukrainian (Intermediate), German (Elementary).
Roman has at least 26 years of experience. During this time, Roman has worked in at least 8 different roles and for 7 different companies. The average length of individual experience is 3 years and 3 months. Note that Roman may not have shared all experience and actually has more experience.
Based on recent experience, Roman would be well-suited for roles such as: CTO, Interim CTO, Tech Advisor.
Roman's most recent position is CTO at EFS.
In recent years, Roman has worked for EFS, Flightright, InnTech Vision, Man-Go, and Smava.
Roman is most experienced in industries like Information Technology, Banking and Finance, and Retail. Roman also has some experience in Professional Services.
Roman is most experienced in business areas like Information Technology, Product Development, and Strategy. Roman also has some experience in Human Resources and Business Intelligence.
Roman has recently worked in industries like Information Technology, Banking and Finance, and Professional Services.
Roman has recently worked in business areas like Information Technology, Product Development, and Strategy.
Roman holds a Master in Computing Machinery & Systems from Taras Shevchenko University.
Roman has 3 certificates. These include: AWS Solutions Architect Associate, Professional Scrum Master I, and Inspiring & Motivating Individuals.
The availability of Roman needs to be confirmed.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 7 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Similar freelancers
Discover other experts with similar qualifications and experience
Oleg A.
Anton K.
Pavlo V.
Alexey G.
Viktor S.
Dmitry T.
Michael B.
Jens R.
Matthias K.
Mathias W.
Experts recently working on similar projects
Freelancers with hands-on experience in comparable project as a CTO
Thomas H.
Simona T.
Serge K.
Vitalijs V.
Stanislav S.
Stephan F.
Tan P.
Hüseyin K.
Daniel B.
Max R.
Nearby freelancers
Professionals working in or nearby Berlin, Germany
Stefan O.
Sascha B.
Dmitry P.
Chris W.
Björn S.
Nune I.
Mladen B.
Andreas R.
Erik W.
Silvia B.
