Available for projects

Senior Full Stack
Developer

Building performant, scalable web applications with modern technologies. Timezone friendly collaboration with teams across the globe.

Sofia, Bulgaria
...
PRs ready by your morning
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Marian - Senior Developer
Marian
Deadline Rescue Available for Contract Full Stack Developer AI-Power Development Rapid Prototyping Second Seat Developer Code Review & Audit Async Friendly Remote Ready Performance Optimization Clear Communication Legacy Refactors Senior-Level Experience

Services

Custom Development

Delivering end-to-end feature development, seamless integrations, and complex builds with clean, maintainable code..

Second Seat Dev

I embed with your teams as a force multiplier. Expanding capacity and accelerating timelines.

Ongoing Maintenance

Retainer-based support for updates, security patches, version upgrades, and ongoing feature development. Your site stays healthy for the long term.

Site Scans & Mitigation

Comprehensive audits covering security vulnerabilities, SEO health, GEO readiness, accessibility compliance, and site speed—complete with actionable fixes to bring everything up to standard.

Performance Audits

Deep reviews of existing codebases identifying bottlenecks, technical debt, and architectural risks before they escalate.

Project Consulting

Scoping, stack selection, architecture planning. Useful before a project starts or when one has gone sideways.

Common Challenges Solved

Poor UI performance

Components re-render constantly, state changes ripple where they shouldn't and requests fire multiple times.

Solved with

  • Use flamegraphs (Chrome Profiler + React DevTools) to see what re-renders and why
  • Keep state local, only lift to global (Zustand) when truly shared across the tree
  • Cancel duplicate in-flight requests with AbortController or TanStack Query deduplication

Slow queries from missing or wrong indexes

Pages that load fine locally crawl in production. The database is doing full table scans it shouldn't.

Solved with

  • Run EXPLAIN ANALYZE on slow queries — spot full scans before users feel them
  • Add compound indexes that match your actual WHERE + ORDER BY column order
  • Avoid SELECT * and N+1 patterns. Fetch only what you need, in as few queries as possible

Images tanking your Core Web Vitals

LCP is slow, layout shifts on load, and images are serving the wrong size to every device.

Solved with

  • Preload hero images with <link rel="preload"> or Next.js priority prop
  • Serve correctly sized images per viewport — stop sending 2000px to mobile
  • Always include alt, width, and height to prevent CLS and help crawlers

Render blocking JS and fonts delaying first paint

The browser stalls before showing anything because scripts and fonts are loaded in the wrong order.

Solved with

  • Defer non critical scripts, nothing blocking in <head> unless essential
  • Use font-display: swap and preconnect to the font origin early
  • Inline critical CSS, load the rest async, stop the browser waiting on stylesheets

Ranking but not getting clicked — SEO/GEO gap

Pages sit on page 2 and AI tools answer your topic without ever surfacing you.

Solved with

  • Fix title tags and meta descriptions to earn the click, not just rank for the keyword
  • Structure content as direct answers, AI (Perplexity, SGE) pulls definitions and lists first
  • Add author authority signals, first hand data, and clear headings that match how questions are asked

Portfolio

A selection of projects I've worked on, from full product builds to embedded engineering engagements.

handi-lift.com
Screenshot of {project.name} website

Corporate website built with Craft CMS, focused on structured content management, performance optimization, and a clean Tailwind-based UI system.

Craft CMSJavaScriptTailwind
joincalibrate.com
Screenshot of {project.name} website

Headless marketing platform powered by Prismic and React, delivering dynamic content rendering and scalable component architecture.

PrismicReactStyle Components
giftingowl.com
Screenshot of {project.name} website

Digital gifting and e-commerce platform built with Laravel and React, featuring custom checkout logic, voucher workflows, and performance optimization.

LaravelReactMariaDB
element451.com
Screenshot of {project.name} website

Modern marketing site built with Prismic and React, implementing reusable components and optimized content-driven architecture.

PrismicReact
antero.com.au/synec
Screenshot of {project.name} website

Custom business platform developed with Laravel and React, utilizing TanStack Query and React Hook Form for complex data handling and scalable API-driven workflows.

LaravelReactTanStack QueryReact Hook FormMariaDB
antero.com.au/incept
Screenshot of {project.name} website

Internal operations platform built with Laravel and Vue, featuring dynamic data management, modular architecture, and optimized database structure.

LaravelVueMariaDB
velgtraining.com
Screenshot of {project.name} website

Training and compliance platform developed with Laravel, focused on structured content delivery, performance, and scalable backend architecture.

LaravelMariaDB
binnacletraining.com.au
Screenshot of {project.name} website

Enterprise training management system built with Laravel and React, supporting large datasets, reporting tools, and complex business workflows.

PHPLaravelReactMariaDB
iehcorp.com
Screenshot of {project.name} website

Corporate platform built with Laravel, focused on structured data management, backend scalability, and maintainable architecture.

PHPLaravelMariaDB
coversports.com
Screenshot of {project.name} website

Marketing website built with Craft CMS, emphasizing clean content structure, SEO optimization, and performance.

Craft CMS
parfium.bg
Screenshot of {project.name} website

E-commerce solution with custom CMS functionality, product management tools, and optimized checkout workflows.

PHPjQueryMariaDBSmarty
x1.gr
Screenshot of {project.name} website

Custom business platform developed with Laravel and Vue, featuring dynamic data management, API integrations, and scalable architecture with MariaDB.

PHPLaravelVueMariaDB
filkab-eng.com
Screenshot of {project.name} website

Developing complex engineering services and production

PHPJavaScriptMariaDBSEO optimisation
zagorka.bg
Screenshot of {project.name} website

For better taste in life

Project ManagerOutsourcing
u4ili6teto.bg
Screenshot of {project.name} website

Educational management platform integrating Omeka and Moodle, enabling structured digital learning workflows and API-based system communication.

OmekaPHPAPIMoodleYUI
parfumgroup.de
Screenshot of {project.name} website

High-traffic e-commerce platform with complex product catalog, custom backend logic, and React-powered frontend components for improved UX and conversion.

PHPjQueryJavaScriptMariaDBReact
mytrendylady.com
Screenshot of {project.name} website

Fashion e-commerce platform built with custom PHP architecture, featuring advanced filtering, dynamic UI components, and performance optimizations.

PHPjQueryJavaScriptMariaDBReactSlim
filkab.com
Screenshot of {project.name} website

Corporate website and digital presence management for an electrical manufacturing company, overseeing project coordination and vendor communication.

Project Manager
point1.bg
Screenshot of {project.name} website

E-commerce platform for sporting goods built with React and Node, utilizing MongoDB for flexible product management and scalable backend services.

PHPMongoDBReactNode
burkan.info
Screenshot of {project.name} website

Classified ads platform developed with custom PHP stack, featuring multi-category listings, search filters, and scalable database architecture.

PHPjQueryJavaScriptMariaDBSmarty

Testimonials

Picture of Roman

Roman

Strategist at Cantilever

"Marian is a versatile full-stack engineer who quickly adapts to different tech stacks and delivers solid results across a wide range of projects. He’s proactive, easy to collaborate with, and brings a reliable, high-quality approach to his work."

View on LinkedIn
Picture of Stefan

Stefan

Lead at Antero

"Marian quickly proved himself as someone who takes ownership and drives work forward with minimal direction. Give him a goal and clear boundaries, and he’ll see it through to completion while adapting easily to changing priorities"

View on LinkedIn
Picture of Harry

Harry

CEO at Antero

"Marian consistently brings structure, calm, and technical depth to the projects he works on. His versatility and strong sense of ownership allow him to lead initiatives and deliver complex full-stack features with minimal guidance."

View on LinkedIn
Picture of Slava

Slava

CEO at SSB PLUS Consulting

"Marian is extremely far-sighted in his work, researches in depth the needs and preferences of clients and works diligently to achieve maximum results. He is very calm and very easy and pleasant to work with."

View on LinkedIn
Picture of Lachezar

Lachezar

CIO at FILKAB AD

"Marian is a diligent developer who quickly grasps new concepts and understands the core of a project from the outset. He’s motivated, easy to work with, and highly respected by colleagues both professionally and personally.."

View on LinkedIn
Picture of Kostadin

Kostadin

CEO at DigitalSpring

"Together with Marian we worked on an e-commerce project which required a lot of integrations to work smoothly. Marian stepped in and was quick to provide us with sustainable long-term solutions. I would recommend him to anyone looking for a professional, reliable and humble developer."

View on LinkedIn

Second Seat Model

The second seat model means I work alongside your developers not instead of them. I'm the multiplier: the person who takes the backlog pressure off your leads, handles the technically complex tickets, and bridges communication between design and engineering.

SOFIA, BULGARIA
NEW YORK · EST
OUTSIDE BUSINESS HOURS
HOW A WORKDAY UNFOLDS
9AM Sofia

My day begins in Sofia. Your NY team is still asleep. Work is already in motion.

You open Slack. Seven hours of focused work already done. PRs open, tickets moved, blockers cleared.

OVERLAP WINDOW

Live standup, code reviews, quick questions. Two solid hours of real-time sync before I wrap.

I wrap up for the day, wrote clean handoff notes in Slack/Jira ticket. Your afternoon is fully unblocked. The loop repeats tomorrow.

Async first. Documented handoffs. Low slack noise. High output.

AI-Powered Development

AI is a tool I use to deliver better results faster and a capability I can build directly into your product, website, or internal workflow.

Custom AI Agents

I build custom AI agents that can be embedded into any website or platform. They’re trained on your website content, documentation, or internal knowledge so they can answer questions clearly and accurately.

  • Website trained chatbots
  • Embeddable on any website or platform
  • Answers grounded in your content

AI Writing & Content Tools

I build AI tools that help your team draft, rewrite, summarize, and improve content faster. These tools can support customer-facing content, internal workflows, and publishing processes.

  • Content drafting and rewriting
  • Summarization and content assistance
  • Custom tools for your workflow

Interested in AI features for your website or business? Let’s talk.

About me

Who I Am

I'm a Senior Full Stack developer who thrives at the intersection of clean architecture and great user experiences. I build fast, scalable web applications with a focus on code quality and long-term maintainability.

With over 14 years of experience shipping production software, I've worked with startups and established companies alike — from solo-founding MVPs to leading engineering teams. I'm based in GMT+2 and specialize in async-first collaboration with US-based teams, delivering progress around the clock.

I care deeply about performance, accessibility, and developer experience. Every project I take on gets the same treatment: thoughtful architecture, clean code, and a relentless focus on the end user.

14+

Years Experience

50+

Projects Delivered

30+

Happy Clients

Tools I reach for

TypeScriptReactNext.jsVueAstroReduxZustandTanStack QueryReact Hook FormZodTailwindScssNode.jsExpress.jsPHPLaravelREST APIsPestCypressPostgresSQLMariaDBMongoDBRedisDockerAWSForgeGitPostmanFigmaAgileScrumAIWordPressPrismicCraft