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I'm a senior full-stack developer with 15+ years of experience building and scaling web applications across six countries. I specialize in React, Next.js, Node.js, and TypeScript, delivering cloud-native platforms on AWS and leading multinational engineering teams. I co-founded an eSIM marketplace and served as CTO, guiding product and technology strategy across diverse markets. I'm open to impactful engagements, on-site or remote, where I can turn complex requirements into robust, scalable software solutions. I'm passionate about collaboration, mentoring, and delivering high-quality user experiences while running efficient, cross-functional teams. I enjoy tackling challenging architecture problems and staying ahead of cloud-native and front-end trends to drive value for customers and stakeholders.…I'm a senior full-stack developer with 15+ years of experience building and scaling web applications across six countries. I specialize in React, Next.js, Node.js, and TypeScript, delivering cloud-native platforms on AWS and leading multinational engineering teams. I co-founded an eSIM marketplace and served as CTO, guiding product and technology strategy across diverse markets. I'm open to impactful engagements, on-site or remote, where I can turn complex requirements into robust, scalable software solutions. I'm passionate about collaboration, mentoring, and delivering high-quality user experiences while running efficient, cross-functional teams. I enjoy tackling challenging architecture problems and staying ahead of cloud-native and front-end trends to drive value for customers and stakeholders.

Duran Akcaylier

Full Stack Developer, Web Developer, Programmer, +4

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I'm a senior full-stack developer with 15+ years of experience building and scaling web applications across six countries. I specialize in React, Next.js, Node.js, and TypeScript, delivering cloud-native platforms on AWS and leading multinational engineering teams. I co-founded an eSIM marketplace and served as CTO, guiding product and technology strategy across diverse markets. I'm open to impactful engagements, on-site or remote, where I can turn complex requirements into robust, scalable software solutions. I'm passionate about collaboration, mentoring, and delivering high-quality user experiences while running efficient, cross-functional teams. I enjoy tackling challenging architecture problems and staying ahead of cloud-native and front-end trends to drive value for customers and stakeholders.…I'm a senior full-stack developer with 15+ years of experience building and scaling web applications across six countries. I specialize in React, Next.js, Node.js, and TypeScript, delivering cloud-native platforms on AWS and leading multinational engineering teams. I co-founded an eSIM marketplace and served as CTO, guiding product and technology strategy across diverse markets. I'm open to impactful engagements, on-site or remote, where I can turn complex requirements into robust, scalable software solutions. I'm passionate about collaboration, mentoring, and delivering high-quality user experiences while running efficient, cross-functional teams. I enjoy tackling challenging architecture problems and staying ahead of cloud-native and front-end trends to drive value for customers and stakeholders.

Available to hire

I’m a senior full-stack developer with 15+ years of experience building and scaling web applications across six countries. I specialize in React, Next.js, Node.js, and TypeScript, delivering cloud-native platforms on AWS and leading multinational engineering teams. I co-founded an eSIM marketplace and served as CTO, guiding product and technology strategy across diverse markets. I’m open to impactful engagements, on-site or remote, where I can turn complex requirements into robust, scalable software solutions.

I’m passionate about collaboration, mentoring, and delivering high-quality user experiences while running efficient, cross-functional teams. I enjoy tackling challenging architecture problems and staying ahead of cloud-native and front-end trends to drive value for customers and stakeholders.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Turkish

Advanced

Work Experience

Senior Full-Stack Engineer & Founder at D Check.co.uk

March 1, 2026 - Present

Founded and built an AI-powered vehicle analysis platform for UK used-car buyers, integrating DVLA and MOT data sources via a canonical data schema to generate comprehensive reports on pricing, market comparisons, and issue detection, with Stripe-powered payments and AI reporting built on the Anthropic Claude API and LangChain.

Senior Frontend Developer (Contract) at Karno Sound

April 1, 2025 - January 1, 2026

Built a dedicated loyalty web platform for sound engineers, integrated with the SEPIA Host ecosystem to enhance the Beach Club professional experience.

Senior Frontend Developer (Contract) at Infinitive Group

September 1, 2024 - March 1, 2025

Developed ILUS, a circular-economy tool to support recycling of Temporary Fixed Asset Materials on the HS2 megainfrastructure project.

Senior Frontend Developer (Contract) at Intercity Rail Freight

October 1, 2023 - August 1, 2024

Developed and deployed a nation-wide consignmen t management platform on AWS, tracking shipments from planning through delivery with real-time visibility.

Senior Frontend Developer (Contract) at RightHub

July 1, 2023 - October 1, 2023

Architected and built reusable task-management screens and activity components for a collaborative task-management platform, improving application efficiency and maintainability.

Senior Full-Stack Developer (Contract) at Accelerate Law

April 1, 2023 - June 1, 2023

Delivered the client's corporate web site (acceleratela w.co.uk) using the Next.js App Router, migrating the CMS from Contentful to Strapi and deploying on AWS.

Senior Full-Stack Developer (Contract) at Legal Sidekick

January 1, 2022 - May 1, 2023

Built and maintained the frontend and backend of an intelligent web-based legal platform for tech founders, developing user and admin dashboards and integrating Stripe payments and a GraphQL API to streamline completion of legal tasks with on-demand expert support.

Software Support Engineer (Contract) at Cambridge Cognition

October 1, 2021 - November 1, 2022

Reproduced and resolved defects across core cognitive-test products within Kanban and Sprint teams, collaborating with developers, scientists, and product managers to formalise requirements and improve software quality and test coverage.

Senior Web Application Developer at Byte Shift Digital Agency

March 1, 2021 - Present

Founded and run a web development company delivering bespoke web applications for multinational clients, leading customer needs analysis, requirements gathering, and solution architecture, and collaborating with designers to deliver modern, high-quality user interfaces.

Co-Founder & CTO at Airalo

March 1, 2019 - June 1, 2020

Co-founded the eSIM marketplace and led a team of nine developers across multiple nationalities, designing system architecture and technical blueprints from the ground up to support distribution across 190+ countries.

Senior Web Application Developer at UptimeRobot

August 1, 2016 - March 1, 2019

Developed core monitoring services serving over 1.1 million users with accurate, real-time uptime monitoring, engineering high-performance RESTful web services and building Chrome extensions and desktop applications to extend the product.

Director of Development at iGOA

January 1, 2012 - June 1, 2016

Led a team of 20+ developers across five nationalities, resolving frontend and backend challenges and overseeing QA to deliver high-quality projects for renowned brands including Nissan, Citroën, Fiat, New Balance, and more.

Software Developer at Kent Digital Signage

August 1, 2010 - December 1, 2011

Built a scalable digital-signage software platform delivering multimedia content across multiple cities in Turkey.

Project Assistant at Siemens AG

September 1, 2006 - October 1, 2008

Contributed to an IFF military project ensuring secure data transfer between sensors and devices, in collaboration with TÜBİTAK and Middle East Technical University.

Project Assistant at Siemens AG

October 1, 2008 - June 1, 2010

Contributed to an IFF military project ensuring secure data transfer between sensors and devices, in collaboration with TÜBİTAK and Middle East Technical University.

Software Developer at Byte Shift Digital Agency

March 1, 2021 - Present

Founded and ran a web development company delivering bespoke web applications for multinational clients, leading requirements gathering and solution architecture.

Co-Founder & CTO at AiraLo (Airalo) Singapore

March 1, 2019 - June 1, 2020

Co-founded the eSIM marketplace, led a team of nine developers across multiple nationalities, designing system architecture and tech blueprints for global distribution.

Tech Web Developer at UptimeRobot Malta & Turkey

August 1, 2016 - March 1, 2019

Developed core monitoring services and high-performance RESTful web services handling millions of requests; built Chrome extensions and desktop apps to extend the product.

Senior Web Application Developer at IGOA Goa

January 1, 2012 - June 1, 2016

Led frontend and backend development for multiple enterprise projects across five nationalities; delivered high-quality web applications for renown brands.

Tech Web Developer at Kent Digital Signage

August 1, 2010 - December 1, 2011

Developed multimedia signage platforms in Istanbul, contributing to scalable digital signage software.