Vaios K.-Senior Product Manager | AI, Platform & API Products
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Experience
Product Manager & Strategic Advisor
Freelance, Lovable, Dreamarium
- Advise early-stage startups on product vision, roadmapping, and GTM strategy, combining PMP and Stanford PM training with hands-on technical execution.
- Lovable: built and led a 200+ member community program for AI-native founders, bridging real-time founder feedback into product roadmap decisions.
- Lead customer discovery and OKR design engagements, scoping AI integration opportunities across client products.
Technical Product Manager
nanocosmos
- Owned end-to-end product development across API, DevOps, and player technology for a low-latency live-streaming platform.
- Restructured product operations and introduced Agile methodologies, running regular 1:1s with team leads to resolve cross-functional blockers.
- Represented the company in C-level customer engagements and at IBC Amsterdam, the industry's leading streaming technology conference.
Senior Product Manager
HireSpace
- Led end-to-end development of a social network and service marketplace, managing a 14-person cross-functional team (7 engineers, 1 PO, 2 designers, 3 biz dev, 1 marketing).
- Grew marketplace supply from 0 to 150+ freelancers through a data-driven GTM strategy and targeted LinkedIn campaign.
- Ran 30+ user interviews under a continuous discovery model and introduced OKRs and sprint planning, improving team velocity by 40%.
Technical Product Manager / Senior Full-Stack Developer
Freelance
- Operated as fractional CTO, Product Manager, and Full-Stack Developer for early- and growth-stage clients; selected for the BSS@CODE startup accelerator (European Social Fund).
- Delivered product strategy and engineering work for OTTO, IU University, Konfy, SocialBookers, Recyclobe, INVAO Group, Mion Records Berlin, and GS-Home.
- Coded 2 MVPs from scratch, spanning fintech, e-commerce, and ed-tech use cases, and improved performance and scalability across 6 production applications.
- Combined hands-on product management with full-stack delivery (React, PHP, WordPress, Django) across diverse verticals, from blockchain investment platforms to e-commerce and real estate.
Senior Full-Stack Developer
we.CONNECT Global Leaders GmbH
- Managed 90+ company and client websites, strengthening resilience and performance for the events and digital transformation business.
- Led the move to cloud infrastructure, cutting the impact of persistent DDoS attacks by 70%, and built DevOps processes that lifted uptime to 95%.
- Developed APIs connecting in-house mobile apps with Sugar CRM, increasing operational efficiency by 30%.
- Shipped new frontend and backend features (JS, PHP, CSS, Bootstrap, WordPress), improving user experience and functionality by 40%.
- Supported 140+ colleagues across the organization, improving team productivity and issue-resolution speed by 50%.
Team Lead / Senior Software Engineer
NCR Corporation
- Led an 8-person team delivering ATM software for Mashreq Bank (Dubai) and Qatar National Bank, owning the QNB build end-to-end through version 1.
- Pioneered a “Receipt by Email” feature that cut paper usage by 30% and led integration of an IRIS eye-scanning security extension.
Project Manager / Software Engineer
Aristotle University of Thessaloniki
- Developed and managed 3 EU-funded educational platforms (OpenED.eu - the EU’s first MOOC platform; OpenSE.net; Innoentre.com), serving thousands of learners across Europe.
- Authored Specification Requirement Sheets and managed full project lifecycles (schedule, quality, risk, communication) at the Software Engineering Lab under Prof. Ioannis Stamelos.
- Taught Entrepreneurship & Innovation and Software Engineering courses; authored online course content for the university’s open education platform.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Education, Banking and Finance, Real Estate, Retail, and Professional Services.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Product Development, Information Technology, Project Management, Marketing, and Research and Development.
Summary
Senior Product Manager with 8+ years of product leadership and 15+ years as a full-stack engineer, specializing in AI/LLM integration, platform and API products, and community-led growth for B2B and B2C SaaS. PMP-certified and Stanford PM-trained, with a track record of taking products from 0 to 1, leading cross-functional teams of up to 50, and building GTM strategies that scale user acquisition. Hands-on experience integrating OpenAI, Claude, and Gemini APIs into production features, with deep technical fluency (React, Node.js, Python, REST/GraphQL, AWS/GCP) that enables close, credible partnership with engineering teams.
Skills
Product Strategy
- Product Vision & Roadmapping
- 0-To-1 Product Development
- Okrs
- Product Lifecycle Management
Ai & Platform
- Ai/Llm Integration (Openai, Claude, Gemini Apis)
- Api Design (Rest, Graphql)
- Platform Products
- Prompt Engineering
Discovery & Execution
- Continuous Discovery
- User Research
- Agile/Scrum
- Gtm Strategy
- Stakeholder Management
Technical Depth
- Full-Stack Development (React, Node.Js, Python, Php)
- Cloud (Aws, Gcp)
- Sql/Nosql
- Devops (Docker, Kubernetes)
Leadership
- Cross-Functional Team Leadership
- Community Building
- C-Level Communication
Languages
Education
Aristotle University of Thessaloniki
MSc · Information Systems · Thessaloniki, Greece
Aristotle University of Thessaloniki
BSc · Computer Science · Thessaloniki, Greece
Certifications & licenses
Product Management Program
Stanford University
AI Agents for Product Leaders
Influence in Action: Stories and Strategies for Managers
Project Management Foundations: Ethics
Prompting with Agentic Techniques
Statistics
Experience
Global experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Vaios is based in Berlin, Germany and prefers 100% remote projects.
Vaios speaks the following languages: Greek (Native), English (Native), German (Intermediate), French (Intermediate).
Vaios has at least 16 years of experience. During this time, Vaios has worked in at least 7 different roles and for 7 different companies. The average length of individual experience is 2 years and 4 months. Note that Vaios may not have shared all experience and actually has more experience.
Based on recent experience, Vaios would be well-suited for roles such as: Product Manager & Strategic Advisor, Technical Product Manager, Senior Product Manager.
Vaios's most recent position is Product Manager & Strategic Advisor at Freelance, Lovable, Dreamarium.
In recent years, Vaios has worked for Freelance, Lovable, Dreamarium, nanocosmos, HireSpace, and Freelance.
Vaios is most experienced in industries like Information Technology, Education, and Banking and Finance. Vaios also has some experience in Real Estate, Retail, and Professional Services.
Vaios is most experienced in business areas like Product Development, Information Technology, and Project Management. Vaios also has some experience in Marketing and Research and Development.
Vaios has recently worked in industries like Information Technology, Education, and Banking and Finance.
Vaios has recently worked in business areas like Product Development, Information Technology, and Marketing.
Vaios holds a Master in Information Systems from Aristotle University of Thessaloniki and a Bachelor in Computer Science from Aristotle University of Thessaloniki.
Vaios has 6 certificates. Among them, these include: Product Management Program, Project Management Professional (PMP), and AI Agents for Product Leaders.
Vaios will be available full-time from November 2026.
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Calculated based on our freelancers’ daily rates as of 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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