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I’m Darko Živković, a Senior Web Developer with over 7 years of experience designing and maintaining cross-platform web and mobile applications from a shared codebase. I specialize in JavaScript, React, and React Native, delivering STI and R&D analytical services through modern web technologies while keeping security and performance at the forefront. I work with AWS infrastructure and WordPress development, emphasizing security protocols such as NIST RMF and DISA STIGs to support force health protection and public health readiness. I collaborate with cross-functional teams to define analytical requirements, implement scalable solutions, and ensure reliable deployments through robust CI/CD pipelines.…I’m Darko Živković, a Senior Web Developer with over 7 years of experience designing and maintaining cross-platform web and mobile applications from a shared codebase. I specialize in JavaScript, React, and React Native, delivering STI and R&D analytical services through modern web technologies while keeping security and performance at the forefront. I work with AWS infrastructure and WordPress development, emphasizing security protocols such as NIST RMF and DISA STIGs to support force health protection and public health readiness. I collaborate with cross-functional teams to define analytical requirements, implement scalable solutions, and ensure reliable deployments through robust CI/CD pipelines.

Darko Živković

Full Stack Developer, Back-End Developer, Front-End Developer, +3

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I’m Darko Živković, a Senior Web Developer with over 7 years of experience designing and maintaining cross-platform web and mobile applications from a shared codebase. I specialize in JavaScript, React, and React Native, delivering STI and R&D analytical services through modern web technologies while keeping security and performance at the forefront. I work with AWS infrastructure and WordPress development, emphasizing security protocols such as NIST RMF and DISA STIGs to support force health protection and public health readiness. I collaborate with cross-functional teams to define analytical requirements, implement scalable solutions, and ensure reliable deployments through robust CI/CD pipelines.…I’m Darko Živković, a Senior Web Developer with over 7 years of experience designing and maintaining cross-platform web and mobile applications from a shared codebase. I specialize in JavaScript, React, and React Native, delivering STI and R&D analytical services through modern web technologies while keeping security and performance at the forefront. I work with AWS infrastructure and WordPress development, emphasizing security protocols such as NIST RMF and DISA STIGs to support force health protection and public health readiness. I collaborate with cross-functional teams to define analytical requirements, implement scalable solutions, and ensure reliable deployments through robust CI/CD pipelines.

Available to hire

I’m Darko Živković, a Senior Web Developer with over 7 years of experience designing and maintaining cross-platform web and mobile applications from a shared codebase. I specialize in JavaScript, React, and React Native, delivering STI and R&D analytical services through modern web technologies while keeping security and performance at the forefront.

I work with AWS infrastructure and WordPress development, emphasizing security protocols such as NIST RMF and DISA STIGs to support force health protection and public health readiness. I collaborate with cross-functional teams to define analytical requirements, implement scalable solutions, and ensure reliable deployments through robust CI/CD pipelines.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Security Researcher at Cantina

September 1, 2024 - Present

Conducted in-depth vulnerability assessments and penetration testing on web applications, APIs, and internal systems. Analyzed threat intelligence data to identify trends, attack vectors, and potential risks across digital assets. Developed custom scripts and tools to automate security testing and streamline vulnerability identification processes. Collaborated with engineering teams to remediate security flaws and implement best practices in development pipelines. Participated in red team simulations and reported findings with actionable mitigation strategies.

Fullstack Web Developer at Revbunny

February 1, 2023 - September 22, 2025

Developed responsive web applications using React.js and Node.js, improving user engagement and system performance. Integrated RESTful APIs and third-party services to enhance application functionality and real-time communication. Collaborated with cross-functional teams to define project requirements and deliver scalable, secure solutions. Led code reviews and implemented CI/CD pipelines, reducing deployment errors and boosting productivity. Maintained SQL and NoSQL databases, ensuring data integrity, optimized queries, and seamless application support.

Solidity and Front-End Developer at RavenX

August 1, 2021 - September 22, 2025

Developed and deployed smart contracts using Solidity for decentralized applications on Ethereum-compatible blockchains. Collaborated with designers to implement responsive front-end interfaces using React, Tailwind CSS, and Web3.js integration. Optimized blockchain interactions with gas-efficient smart contracts and secure wallet integration for seamless user experiences. Conducted unit testing and smart contract audits using Hardhat and Chai to ensure contract reliability. Integrated front-end dApps with backend smart contracts using Ethers.js and Metamask wallet for transaction handling.

Frontend Developer at TradeCoinToken

August 1, 2020 - September 22, 2025

Developed responsive user interfaces using React.js and Next.js to enhance crypto trading user experience. Collaborated with backend team to integrate APIs and ensure seamless blockchain transaction data rendering. Optimized frontend performance by reducing load times through efficient component structuring and lazy loading. Implemented secure authentication flows using OAuth and JWT for user account and wallet protection. Maintained codebase using Git and participated in agile sprints for iterative feature deployment and review.

CTO & Fullstack Website Developer at REVBUNNY

September 1, 2020 - Present

Develops and maintains cross-platform web and mobile applications from a shared React and React Native codebase, improving force health protection readiness and system performance. Integrates RESTful APIs and PHP data sources using Spring Boot to deliver personalized STI deliverables. Designs responsive HTML5/CSS3 UI components with WordPress and Tailwind CSS, ensuring WCAG compliance and DISA STIGs security guidelines. Collaborates with cross-functional teams to define R&D analytical requirements and deliver scalable, secure solutions for public health threats. Maintains CI/CD pipelines in AWS, applying NIST RMF to protect sensitive health data. Optimizes SQL/PL/SQL and NoSQL databases for high-speed R&D data retrieval.

Frontend Developer at TRADECOINTOKEN

April 1, 2018 - August 1, 2020

Developed high-performance user interfaces using JavaScript, React JS, and Next.js to visualize complex transaction data. Collaborated with backend teams to integrate APIs and render personalized data in secure environments. Optimized frontend performance through efficient component structuring and lazy loading. Implemented OAuth and JWT-based authentication, aligning with security principles under NIST RMF. Maintained codebase with Git and used Figma, Sketch, and Adobe XD for iterative feature deployment in Agile sprints.