Hello There!
Innovative and results-driven software engineer with extensive experience designing, developing, and deploying secure, scalable, and high-performance solutions across web, mobile, and blockchain platforms. Skilled in backend architecture, smart contract development, and cloud-based systems, with a strong track record of delivering cutting-edge applications for high-profile clients. Adept at leading technology strategy, implementing robust security protocols, and optimizing development pipelines to achieve operational excellence. Passionate about leveraging advanced cryptography, zero-knowledge proofs, and modern frameworks to create reliable and forward-thinking software solutions.
- Birthdate : 20/09/1996
- Email : eugene20920@gmail.com
- LinkedIn : linkedin.com/in/josipneretljak
- WhatsApp : +1 (682) 214-8002
- Telegram : @josipneretljak
- Website : josip-profile.vercel.app
- Addresses : Drenovski put 142, 51000, Rijeka, Croatia
Software Engineer
Blockchain Engineer
Web Developer
Web Tester
Experience
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2025 - Present
Director - technology
Nexifuse・ Led the technology strategy and backend engineering efforts for building secure and scalable solutions in healthcare and blockchain.
・ Architected and developed backend systems leveraging zero-knowledge proofs to enable secure smart contract execution without exposing sensitive data.
・ Oversaw system performance, security audits, and deployment pipelines to deliver reliable decentralized healthcare applications.
・ Contributed to product innovation by integrating cutting-edge data protection and cryptographic techniques, enhancing trust in digital healthcare solutions.
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2023 - Present
Senior Software Engineer
Thrilion LLC・ Delivered multiple projects across web, mobile, and game development in an IT agency setting.
・ Engineered backend systems with Node.js, leveraging Supabase, Firebase, AWS, and GCP for scalable, secure, and high-performance solutions.
・ Developed and maintained Telegram-based games and project backends, ensuring reliable real-time interactions.
・ Built and deployed cross-platform mobile applications using React Native and Expo, enhancing accessibility and user experience.
・ Implemented CI/CD pipelines and Docker-based workflows to streamline development, testing, and deployment.
・ Integrated third-party APIs and subscription-based permission systems to expand functionality and improve security.
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2021 - 2023
Blockchain Engineer
RASTA FINANCE・ Developed and deployed DEX, NFT marketplaces, and various staking and farming contracts, including financial NFT staking solutions.
・ Designed and implemented smart contracts to ensure secure and efficient decentralized operations.
・ Integrated blockchain-based systems with front-end applications for seamless user interaction.
・ Collaborated with a team to deliver scalable and innovative decentralized solutions.
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2020 - 2022
Mobile Application Developer
iBluday Corporation・ Designed and developed Android and iOS mobile applications for booking, tracking, and other service-based solutions, enhancing user engagement and accessibility.
・ Built intuitive and responsive UI/UX using modern frameworks and tools, ensuring seamless performance across devices.
・ Implemented RESTful API integrations to connect mobile apps with backend services, enabling real-time data synchronization.
・ Adapted to evolving project requirements, continuously learning and applying new technologies to improve development efficiency.
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2018 - 2020
Web and SEO Enhancement
RecruitTalk Service・ Developed a job information platform specifically for student athletes, enabling universities and companies to post job opportunities that align with their academic and athletic commitments.
・ Integrated Stripe payment gateway into Ruby on Rails to manage membership ranks efficiently.
・ Implemented the Solr search engine to enhance SEO and improve visibility for job postings.
・ Created an intuitive website user interface using ERB, facilitating seamless navigation for users.
Education
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2013 - 2017
Bachelor of Science in Computer Science
UNIRI University of Engineering
Skills
REACT & REDUX
NEXT & NUXT
VUE & VUEX
ANGULAR
NODE & NEST
PYTHON & DJANGO
DOCKER
GIT & TRELLO & JIRA
THREE.JS
FIREBASE
MYSQL & MONGODB
GRAPHQL & POSTGRESQL
WEB3 & ETHER.JS
SOLIDITY & RUST
SMART CONTRACT
TRUFFLE & HARDHAT
REACT NATIVE
NFT
ICO & DEX & DAO
STAKING & FARMING
Soft Skills
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Problem Solving 100%
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Creativity 95%
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Time Management 100%
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Team Work 100%
Language
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English 90%
My Works
Pricing
Front-End Developer
- React js
- Next js
- Vue jS
- Angular js
- Web3 js & Ether js
Back-End Developer
- Node js
- Python
- Solidity
- Rust
- Truffle & Hardhat
Full-Stact Developer
- Included Front-End Developer
- Included Back-End Developer
Testimonial
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Great Work
Working with a great team can be a game changer for any project, and that is exactly what we found in this particular collaboration. From the outset, it was clear that everyone had an equal voice in the overall strategy, delivering on-time reports and providing excellent communication through every step of the process. As a result, all objectives were achieved quickly, efficiently and to our highest expectations!
Giel -
Top Expectation
Josip did an amazing job upgrading my website! They are incredibly professional and knew the correct questions to ask to ensure that I would get the website upgrade for my situation. They worked on my web every day and finished the upgrade ahead of schedule. I did not know what to expect going in but they steered me in the right direction and most importantly they are experts in search engine optimization and quickly made my website in the top of the web rankings. I was very impressed by the quality of the work for the price. I would use them again and give them 5 stars for their work!
Christopher -
Wonderfull Work
Josip not only implemented this task well, but he also took this as an opportunity to refactor the code for the better. He is a very experienced and accomplished programmer. Its a joy to work with him.
Moseley -
Good Communication
Josip was very communicative and knew what needed to be done to deliver the project I was needing. He's a professional in every respect and I highly recommend him for his expertise, hospitality, and professionalism.
Frenklin -
Impressive Project
The experience working with Josip was pretty impressive throughout the whole project. We expect to with together again very soon. The quality of their job is outstanding, and the handover was quite smooth and straightforward for our team to understand how they build the project and take the development from there. I definitely recommend him!
Alexander
Clients
Latest News
Get in touch
Feel free to contact me
- eugene20920@gmail.com
- linkedin.com/in/josipneretljak
- Drenovski put 142, 51000, Rijeka, Croatia