Nikolaos P.-Fullstack AI Engineer · UX/UI · Applied Psychology
Check rate
Experience
Product Builder
Odyssea
Full Stack Engineer
AIWonderLab
- Engineered high-availability enterprise applications via AI-Augmented Development (Claude Code, Cursor, Codex).
- Applied Clean Architecture and Modular Monolith patterns for long-term scalability.
- Built autonomous agentic workflows with RAG and multi-agent orchestration for complex automation.
- Delivered full-stack with NestJS, Prisma and Next.js — a Universal TypeScript Stack across Web, Mobile (React Native) and Desktop (Electron).
- Integrated self-healing data logic and security-hardened identity management systems.
Internal Tools Developer
AffiliateMotion
- Developing internal tooling and automation solutions to streamline affiliate operations.
Fullstack AI Engineer (UX/UI & Applied Psychology)
ARPA Corp.
- Building AI-powered web applications combining technical engineering with UX/UI design principles.
- Applying psychological frameworks to improve user experience and product behavior.
Affiliate Account Manager
AffiliateMotion
- Managed affiliate partnerships and drove performance growth across key accounts.
Webmaster / Ecommerce Administrator
Studio 360 – Dorkofikis
- Managed and optimized the company's ecommerce platform and digital presence.
Product Manager & Technical Support Manager
N. Kiourtisidis & Co.
- Led product roadmap planning, cross-functional coordination, and technical support operations.
Recruitment Specialist
ReSource Consultants
- End-to-end recruitment for tech and corporate roles; sourcing, interviewing, and onboarding.
Business Development Specialist
Rendl Light Studio
- Identified and developed new business opportunities in the B2B lighting market.
Freelance AI Data Annotator & Evaluator
Independent Contractor
- Contracted by AI labs and data-services companies to evaluate and rank large language model responses against detailed, project-specific rubrics and annotation guidelines.
- Focus on software-engineering and reasoning task families — reviewing generated code for correctness and idiomatic style, and writing reference solutions and prompts.
- Daily exposure to model failure modes and alignment criteria that directly informs how AI features are designed, prompted and evaluated in production work.
Human Resources Generalist
DYPA – Greek Public Employment Service
Social Media Manager
Lioncode Your IT People
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Advertising, Professional Services, Retail, Manufacturing, and Government and Administration.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Quality Assurance, Research and Development, Marketing, Product Development, Information Technology, and Operations.
Summary
AI-first Fullstack Engineer combining software engineering with UX/UI design and applied psychology. Experienced in building high-availability enterprise applications through AI-Augmented Development, agentic workflows, and modern TypeScript stacks. Alongside engineering work, has spent four years under contract with AI labs and data-services companies evaluating model outputs against detailed rubrics — practical, hands-on insight into how LLMs actually behave, where they fail, and how output quality is measured. A background spanning product management, recruitment, business development and digital marketing enables a uniquely holistic approach to product thinking and team dynamics.
Skills
Languages & Frameworks
- Typescript
- Javascript
- Nestjs
- Next.Js
- React Native
- Electron
- Prisma
Ai & Tooling
- Claude Code
- Cursor
- Codex
- Rag
- Multi-Agent Orchestration
- Agentic Workflows
- Vercel V0
- Google Stitch
Ai Evaluation
- Rubric-Based Response Evaluation
- Preference Ranking
- Prompt Design
- Annotation Guidelines
Design & Ux
- Ux/Ui Design
- User Experience Design
Architecture
- Clean Architecture
- Modular Monolith
- Universal Typescript Stack
Other
- Product Management
- Human Resources Management
Languages
Education
Università degli Studi Guglielmo Marconi
BSc Psychology · Psychology · Rome, Italy
Hellenic Open University
Bachelor of Business Administration (BBA) · Business Administration · Greece
DYPA EPAS Kavalas
Vocational Degree, Information Technology · Information Technology · Kavala, Greece
Certifications & licenses
Casambi – Hardware & App Specialist
Google Ads Display Certification
Google Ads Search Certification
Human Resources Management Certification
Problem Solving – HackerRank (Basic)
HackerRank
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Nikolaos is based in Athens, Greece.
Nikolaos speaks the following languages: Greek (Native), English (Advanced).
Nikolaos has at least 6 years of experience. During this time, Nikolaos has worked in at least 12 different roles and for 11 different companies. The average length of individual experience is 1 year and 6 months. Note that Nikolaos may not have shared all experience and actually has more experience.
Based on recent experience, Nikolaos would be well-suited for roles such as: Product Builder, Full Stack Engineer, Internal Tools Developer.
Nikolaos's most recent position is Product Builder at Odyssea.
In recent years, Nikolaos has worked for Odyssea, AIWonderLab, AffiliateMotion, ARPA Corp., and Studio 360 – Dorkofikis.
Nikolaos is most experienced in industries like Information Technology, Advertising, and Professional Services. Nikolaos also has some experience in Government and Administration, Retail, and Manufacturing.
Nikolaos is most experienced in business areas like Quality Assurance, Research and Development, and Marketing. Nikolaos also has some experience in Product Development, Sales, and Information Technology.
Nikolaos has recently worked in industries like Information Technology, Advertising, and Professional Services.
Nikolaos has recently worked in business areas like Quality Assurance, Research and Development, and Marketing.
Nikolaos holds a Bachelor in Psychology from Università degli Studi Guglielmo Marconi and a Bachelor in Business Administration from Hellenic Open University.
Nikolaos has 5 certificates. Among them, these include: Casambi – Hardware & App Specialist, Google Ads Display Certification, and Google Ads Search Certification.
Nikolaos is immediately available full-time for suitable projects.
Daily rate distribution
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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 27 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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