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Hire the best API Integration Freelancers in Sofia, BG

Check out API Integration Freelancers in Sofia, BG with the skills you need for your next job.
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  • $40 hourly
    • 5.0/5
    • (6 jobs)
    ⭐️⭐️⭐️⭐️⭐️ 𝟱-𝘀𝘁𝗮𝗿 Web Developer on Upwork ★ 𝗧𝗼𝗽 Service Provider by Clutch ★ 𝟭𝟬𝟬+ Successful IT projects ★ 𝟯𝟬+ International Awards ★ 𝟱 𝘆𝗲𝗮𝗿𝘀 of expertise with clients 𝐖𝐞𝐥𝐜𝐨𝐦𝐞 𝐭𝐨 𝐦𝐲 𝐩𝐫𝐨𝐟𝐢𝐥𝐞 𝐩𝐚𝐠𝐞: 👨‍💻 I'm a passionate engineer specializing in Vue.js and Laravel. With years of experience, I provide top-tier web solutions and skilled IT personnel to elevate your projects. Whether you need bespoke web applications or additional tech talent, I'm here to deliver excellence. 🏆 Expert-Vetted front-end developer. 🏆 Head of development at Top Clutch IT agency in Bulgaria. 🏆 Managed projects for 30+ clients and delivered over 50 fully developed products. 🎯 𝐌𝐲 𝐦𝐚𝐢𝐧 𝐬𝐤𝐢𝐥𝐥𝐬: ・Vue, NuxtJS, GraphQL, Next, React. ・Open AI enthusiast. ・JavaScript (ES6-ES8), Typescript. ・NodeJS, Express. ・MongoDB, PostgreSQL, MySQL. ・Scss, Sass, PostCSS, HTML5, CSS3. ・Building maintainable design systems with Storybook. ・Client-side performance including AMP and PWA apps. ・Accessibility, 508 Compliance support. ・SEO Optimization. ・Cross-browser/cross-platform manual testing. ・Automation QA: Cypress, Puppeteer, Playwright, Jest, Selenium. ・Tooling: Webpack, Git, NPM. I am an accomplished web developer with extensive expertise in full-stack development, specializing in both front-end and back-end technologies. My skill set includes proficiency in HTML5, CSS3, and JavaScript (JS), along with experience working with frameworks and libraries such as Vue (VueJS), Node.js, Express.js, TypeScript, React, Next.js, and Nuxt.js. I excel in creating scalable web applications, leveraging tools like Gatsby and GraphQL to build dynamic, data-rich websites. On the front-end, I utilize frameworks like Bootstrap, Tailwind CSS, and Sass to craft responsive and user-centric interfaces. For back-end development, I have a strong background in integrating and managing databases, including MongoDB, PostgreSQL, MySQL, and DynamoDB. My experience extends to deploying and managing applications on cloud platforms such as AWS, Google Cloud Platform, and Microsoft Azure, ensuring reliable and efficient solutions. I specialize in RESTful API development and integration to facilitate seamless communication between application layers. I am adept at version control and collaborative workflows, utilizing tools like Git, GitHub, and Bitbucket. Additionally, I have experience with Firebase for real-time database solutions and Cypress for comprehensive testing of web applications. My expertise also includes SaaS development, crafting tailored Software-as-a-Service solutions to meet diverse business needs. I am proficient in CMS development across platforms like Shopify, HubSpot, Strapi CMS, and Ghost CMS, delivering highly customizable content management systems. Whether it’s building a Shopify application, a static site, or a bespoke CMS, I ensure top-notch quality in every project. I thrive in agile development environments, leveraging tools like Jira, Trello, and Asana to streamline project workflows and deliver on time. For effective team communication, I rely on platforms like Slack and Google Meet to stay aligned with clients and colleagues throughout the project lifecycle. With my comprehensive experience in full-stack development, front-end design, and web application deployment, I am well-equipped to handle every phase of web development, ensuring innovative and high-quality outcomes for my clients. ⭐ 5/5 "I wholeheartedly recommend Voidweb's services to others. They played a pivotal role in achieving my MVP goals and provided invaluable insights" - Jonas S. / Studyquick ⭐ 5/5 "One of the most impressive aspects of Voidweb was their attention to detail and ability to bring our design vision to life. They accurately captured our brand identity and translated it into a visually stunning website. Their expertise in user experience and responsive design was particularly noteworthy." - Aneliya I. / Cyris ⭐ 5/5 "We are pleased to say that Voidweb met every aspect of our project's demands and delivered on time, even for the most challenging issues. Their responsiveness was both efficient and effective, ensuring that our needs were always addressed promptly. Overall, we are extremely satisfied with their project management and the services provided" - Douglas Insights
    Featured Skill API Integration
    Vuex
    RESTful API
    GitHub
    Web Development
    JavaScript
    Tailwind CSS
    Bitbucket
    Laravel
    Node.js
    React
    Redux
    Next.js
    Vue.js
    Nuxt.js
  • $50 hourly
    • 5.0/5
    • (8 jobs)
    Engineering Project Management training and experience -> then engineering technical sales -> then software sales and sales management. I am passionate about software sales and sales management where I've excelled for the last 6 years. I love business strategy & sales management, technical communication and negotiation. I have a talent for business communication / proposals etc. - and negotiation. I also love sports, comedy and craft beer. I'm a Canadian and native English speaker who recently moved to Bulgaria for my next adventure. I'm an interesting blend of Analytical thinking with Sales & Business interests - and a talent for writing. Hockey, Rugby, Lacrosse, Fitness, Comedy, Beer, Soccer, Nutrition
    Featured Skill API Integration
    Airtable
    Software Development
    Amazon Webstore
    Make.com
    Google Sheets
    Project Management
    Zapier
    Sales Management
    Management Skills
    Coaching
    Technical Project Management
    Proposal Writing
    Business Management
    Engineering & Architecture
  • $50 hourly
    • 4.7/5
    • (125 jobs)
    Coding has always been my true passion! Although I have a master's degree in dentistry, I decided to stick to coding because that's what I do best. My experience over the years helps me deliver high-quality code, solving complex problems and helping my clients improve their products. Tech Stack: Solidity (Blockchain), Laravel (PHP), OpenCart, WordPress, IP.Board, phpBB, RESTful APIs, MySQL, JavaScript, HTML, CSS
    Featured Skill API Integration
    Blockchain
    phpBB
    OpenCart
    Solidity
    RESTful API
    CSS
    WordPress
    HTML
    jQuery
    PHP
    JavaScript
    Laravel
    HTML5
    MySQL
  • $25 hourly
    • 5.0/5
    • (1 job)
    I am a pretty fast learner. This is really useful in my line of work especially in Research and Development projects and situations. I have personal experience with a lot of technologies already, specializing professionaly in C#, ASP.NET, HTML, JavaScript, PHP, SharePoint, DevOps Tools, Project management, Team management, C/C++, Java, Python, Powershell, Mentorship, Application architecture and too many other technologies to be meaningful to add. I also have good knowledge about servers, communications, computer diagnostics, databases, linux amongst other things.
    Featured Skill API Integration
    Django
    Umbraco
    WordPress
    .NET Core
    .NET Framework
    Python
    C#
    API Development
    C++
    Web Application
  • $50 hourly
    • 0.0/5
    • (2 jobs)
    Experienced Consultant with a demonstrated history of working on the MCI Datorama platform. Focused on implementing and utilizing the full potential of the Datorama (MCI) platform for Marketers and all users. Еnd-to-end implementation services to help you get up and running quickly and efficiently.
    Featured Skill API Integration
    HTML
    Data Analysis
    Microsoft Excel
    Data Visualization
    JavaScript
    Dashboard
    Analytics Dashboard
    Database Administration
    SQL
    Marketing
  • $16 hourly
    • 5.0/5
    • (2 jobs)
    🔍 Do you need a Detail-oriented Front-End Developer? Click "Invite" at the top, and let's work together! 👨‍💼 I'm working with: HTML, CSS, SASS, MUI, React, JavaScript, TypeScript, Next.js, Node.js/Express, MySQL/MongoDB, TailwindCSS, Redux, Firebase, Supabase, Figma, Adobe PS/AI/XD and more. 🚀 I have over 3 years of software development experience and thanks to my Bachelor's degree in Graphic Design I create websites that are not only scalable and intuitive but also look great. 🤝 I have hands-on experience with React, Redux, Next.Js and Node/Express. I have a good understanding of HTTP Requests, REST APIs, and Git/Git Flow, and I’ve used Docker to containerize a project. I have basic understanding of the concept of CI/CD pipeline. 🛠 I’ve also worked with Firebase and Supabase for back-end solutions and used tools like Postman and Reqbin for API testing. I have worked with the authentication protocols - OAuth, and JWT. 🌟 𝗞𝗲𝘆 𝗦𝗸𝗶𝗹𝗹𝘀: - Proficiency in React/Next.js with Javascript/TypeScript - HTML, CSS/SASS, Bootstrap 5, Material UI, Tailwind CSS / Shadcn/UI - RESTful API Integrations - Deployment to Vercel - Very strong design and UI/UX skills 🔗 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲: - PostgreSQL - MongoDB - Firebase/Supabase 🔄 𝗩𝗲𝗿𝘀𝗶𝗼𝗻 𝗖𝗼𝗻𝘁𝗿𝗼𝗹: - GitHub 💬 𝗢𝘁𝗵𝗲𝗿 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 - Agile/Scrum Methodologies - Node/Express - Jira/Confluence - Docker 💼 Whether you need a responsive website, an online store, or a custom website, I’m here to help. I work hard to make sure everything is done in the best way possible and always in my deadlines. I’m comfortable working with Windows and Mac, and my daily tools include VSCode, Chrome DevTools, React Developer Tools, Redux Toolkit, Slack, Discord, and ChatGPT. I have experience with hosting on platforms like Firebase and Vercel. ⚡ Let’s work together and make your ideas a reality!
    Featured Skill API Integration
    Node.js
    UX & UI
    Redux
    Graphic Design
    Firebase
    Figma
    Sass
    HTML
    CSS
    Tailwind CSS
    Next.js
    TypeScript
    JavaScript
    React
  • $39 hourly
    • 0.0/5
    • (0 jobs)
    I’m a Senior Frontend and Full-Stack Developer with over 10 years of experience building scalable, user-friendly web applications. My expertise lies in JavaScript frameworks like React, Node and Next.js, complemented by a strong background in Tailwind CSS and responsive design. I’ve worked on complex projects, including React Native apps, delivering seamless user experiences and high-performing, maintainable code. Whether you need a cutting-edge web app, a robust SaaS platform, or a sleek, responsive website, I can turn your ideas into reality. Here’s what I bring to the table: • Frontend Expertise: Highly skilled in creating intuitive user interfaces using React, Next.js, and modern CSS frameworks. • Full-Stack Development: Experienced with integrating REST APIs, optimizing performance, and ensuring scalability. • Problem-Solving: A proven ability to troubleshoot and enhance applications with precision and efficiency. • Communication: Clear, timely updates to keep your project on track. Let’s collaborate to create something exceptional. Reach out, and let’s discuss how I can help your project succeed!
    Featured Skill API Integration
    Tailwind CSS
    Responsive Design
    Front-End Development
    Full-Stack Development
    JavaScript
    Node.js
    React
    Web Application
    React Native
    Web Development
  • $20 hourly
    • 0.0/5
    • (1 job)
    I am excited to apply for the Laravel Developer position. With over 9 years of experience in full-stack development, I specialize in creating robust back-end systems with Laravel and dynamic front-end interfaces with Vue.js. I am eager to contribute to your innovative projects and bring my technical expertise to your team. Linkedin: Borislav Glaskov
    Featured Skill API Integration
    MySQL
    Laravel
    Bootstrap
    Vue.js
    CSS
    Vuex
    PHP
    Web Development
    GraphQL
    RESTful API
    JavaScript
    HTML5
    PHPUnit
  • $55 hourly
    • 0.0/5
    • (1 job)
    I specialize in crafting robust, scalable solutions on .NET, Azure Cloud, and Kubernetes, with expertise spanning both infrastructure and application design. My approach is rooted in aligning technical solutions with business objectives, ensuring efficiency and impactful results. Key Strengths: - Solution Design: Proficient in building architectures from scratch or optimizing existing systems for performance and scalability. - Cloud Expertise: Deep experience with Azure services, container orchestration (Kubernetes), and modern DevOps practices. - Efficiency Focus: Committed to eliminating unnecessary processes and delivering value-driven outcomes swiftly. I thrive on simplifying complexity, driving innovation, and achieving tangible business results. Whether you need a greenfield architecture, system modernization, or seamless migration, I bring the tools, mindset, and experience to make it happen. Let's collaborate to unlock your project's potential and achieve measurable success.
    Featured Skill API Integration
    React
    Xamarin
    Stripe
    Data Modeling
    XAML
    Cloud Development
    Azure DevOps
    .NET Stack
    Solution Architecture
    DevOps
    Problem Solving
    Microsoft Azure
    Docker
    Kubernetes
  • $33 hourly
    • 0.0/5
    • (0 jobs)
    Results-driven Software Engineer with a comprehensive skill set and over 5 years of experience. Proficient in both frontend and backend technologies, with hands-on experience in JavaScript, C#, HTML, CSS, and various frameworks such as React.js, Node.js, and Express.js. Possesses good knowledge of cloud services, eCommerce platforms, and database management. Adept at collaborating with cross-functional and international teams to drive project success. Seeking opportunities to contribute expertise in project development. Programming languages: JavaScript (5 years), TypeScript(2 years), C# (1 year), HTML (5 years), YAML (1 year) Domain specialization: E-Commerce (over 4 years), Education (1 year), Video Sharing (1 year) Front-End Technologies: - Frameworks and Libraries: React.js, React-Admin, Next.js, Vue.js, Nuxt.js, Bootstrap, MaterialUI, Handlebars.js Front-End Scripting: jQuery Back-End Technologies: - Frameworks and Libraries: Express.js, Nest.js, GraphQL Cloud Services: AWS (Lambda, SQS, SNS, EventBridge, API Gateway), GCP (Cloud Functions, Cloud Storage), Firebase(Hosting, Realtime Database, Cloud Storage, Cloud Functions), Heroku. Data Formats: JSON, XML, YAML Testing: SpecFlow(BDD framework for .Net), Jest. Version Control: Git, Bitbucket, GitHub Content Management Systems: BigCommerce, StrapiJS, KeystoneJS Databases: MongoDB, PostgreSQL, DynamoDB ORM: Prisma ORM, TypeORM ODM: Mongoose.js Project management tools: Jira, Tempo for Jira Bundlers: Webpack, Parcel Search tools: Bloomreach, Algolia Operating systems: Windows, Linux (Ubuntu WSL) Platforms: Node.js, Docker, Ngrok Experience (last 5 + years) Full Stack Software Engineer 2019 - Now 4IRE, Mira Commerce Digital Agency, Homebranded LLC • Contributing to the development of a large-scale application as part of a multidisciplinary team, including PMs, TL, front-end, and QA engineers. • Implementing backend functionality from scratch using Nest.js, designing database schemas and APIs, and resolving bugs to ensure smooth system functionality. • Developing frontend components in React.js (Next.js) and AWS services, focusing on responsive design and user-centric features. • Worked on custom AWS middleware development, implementing "Site Reports and Notifications" modules, fixing issues, and enhancing system components in collaboration with a team of full-stack and QA engineers. • Focused on improving page load speed and accessibility compliance, alongside bug fixes. • Migrated millions of records from Salesforce to BigCommerce using optimized data processing pipelines, ensuring data integrity and minimizing downtime. Developed custom widgets and REST APIs, improved performance, and addressed support issues. • Implemented tailored modules, frontend styling, and resolved bugs to align with technical requirements. • Supported data migration and custom module development, ensuring smooth system functionality and integration with BigCommerce. • Participated in architectural decision-making for scalable backend solutions. • Set up data monitoring dashboards using Grafana for real-time performance tracking and business metric visualization, providing crucial insights to stakeholders. • Developed custom data analysis tools for business intelligence, utilizing DynamoDB and PostgreSQL to derive actionable insights for client decision-making. • Acted as a mentor for junior developers, guiding them in best practices for full stack development.
    Featured Skill API Integration
    BigCommerce
    Ecommerce Development Consultation
    Scripts & Utilities
    Cloud Services
    AWS Application
    Cloud Database
    Auth0
    Front-End Development
    Back-End Development
    Data Migration
    Cloud Application
    Database Design
    API Development
  • $25 hourly
    • 0.0/5
    • (0 jobs)
    What fascinates me about working in payments, is the rapid innovation and the impact we have on global commerce. I’m excited to be part of a small, dynamic, and ambitious team that drives change and delivers cutting-edge solutions. It’s rewarding to work in such a fast-paced environment where we’re always pushing the boundaries of what’s possible.
    Featured Skill API Integration
    JSON
    CSS
    HTML
    API
    Zendesk API
    Zendesk
    Slack
    Conference
    Jira
    Payment Functionality
    Payment Plugin
    Payment Processing
    Payment Gateway
    Technical Support
  • $50 hourly
    • 0.0/5
    • (0 jobs)
    I’m passionate about turning ideas into polished content and streamlined processes that drive growth. With 3 years as a top‑performing real‑estate broker, 1 year building and leading a 7‑person agency, and 3 years hands‑on in digital marketing, video editing & AI implementations, I blend strategic insight with executional excellence. — What I bring to the table: • Video Editing & Creation • AI Automations & Integrations • Strategic Marketing Let’s collaborate to elevate your brand with next‑level video and AI solutions!
    Featured Skill API Integration
    Adobe After Effects
    Social Media Advertising
    Social Media Chatbot
    Scriptwriting
    Presentation Design
    Marketing
    Market Research
    AI Video Generation
    AI Bot
    Task Automation
    Motion Graphics
    Prompt Engineering
    Video Editing & Production
  • $20 hourly
    • 0.0/5
    • (0 jobs)
    Hi there! I'm someone who loves making things simpler and more efficient — especially when it comes to data, Excel, and the tools we all use every day. I help small teams and solo founders save time by organizing messy spreadsheets, automating boring tasks, and connecting the software they rely on. I’m comfortable working with Excel, Google Sheets, and testing APIs with Postman. Not a coder? No problem — I focus on no-code and low-code solutions that just work. If you need help building a smoother workflow or bringing some order to your data chaos, I’d love to work with you.
    Featured Skill API Integration
    Quality Assurance
    Airtable
    Web Scraping
    Data Entry
    Google Sheets
    AI App Development
    Insurance & Risk Management
    MongoDB
    SQL
    API Testing
    ChatGPT
    Microsoft Excel
  • $28 hourly
    • 0.0/5
    • (0 jobs)
    AI Automation Expert | Founder of AI Fortis I’m an AI expert with extensive experience in building advanced automation systems to help businesses save time, scale operations, and achieve measurable growth. As the founder of AI Fortis, I’ve worked with companies of all sizes, empowering them to leverage the latest AI technologies for optimized workflows, enhanced lead generation, and personalized customer outreach. What I Bring to the Table: Custom AI Automations: I design tailored solutions that streamline repetitive tasks and free up time for creative and strategic work. My automations cover outreach, customer service, and internal operations. Personalized Lead Generation: My systems can send thousands of highly customized cold emails daily, improving reply rates and engagement while reducing bounce rates. Scalable Systems: I build solutions that grow with your business, integrating tools like make.com, Instantly, Phantombuster, and LinkedIn Sales Navigator to deliver results at scale. CRM Integration: From lead capture to follow-ups, I integrate AI systems into your existing platforms, enhancing data organization and decision-making. Results I’ve Delivered: Helped businesses increase client acquisition rates by up to 60% through automated and personalized outreach strategies. Reduced manual workload by up to 90% by automating repetitive tasks, allowing teams to focus on high-value activities. Improved email deliverability and engagement, leading to higher reply rates and increased conversions. My Approach: I believe in a client-centric approach, tailoring each project to the unique needs and goals of the business. Whether you need a complete automation system or improvements to your current processes, I focus on delivering high ROI with measurable impact. Why Work with Me? Proven Expertise: Years of experience in AI automation and a strong track record of delivering results. Scalable Solutions: I design systems that grow with your business, ensuring long-term success. Customized to You: Every business is unique, and so are my solutions. I’ll work with you to create the perfect fit for your needs. If you’re ready to take your business to the next level with AI-driven automation, let’s work together to unlock your potential.
    Featured Skill API Integration
    SaaS
    SaaS Development
    API
    AI Image Generation
    AI Content Writing
    AI Data Analytics
    AI Content Creation
    AI Chatbot
    AI Bot
    AI Agent Development
    Automation
    Zapier
    Make.com
    Artificial Intelligence
  • $30 hourly
    • 0.0/5
    • (0 jobs)
    Hi, I’m a passionate web developer focused on integrating artificial intelligence into innovative applications and bots. I specialize in building seamless web applications and intelligent bots with AI-driven features like intelligent automation, data-driven insights, and personalized functionalities. Whether you need a custom AI module for your existing app, a full-scale AI-powered platform, or a smart bot to enhance user engagement, I’m here to deliver efficient, high-quality solutions. My mission is to help businesses harness cutting-edge technology to stay ahead in a competitive digital landscape. Let’s bring your ideas to life—feel free to reach out!
    Featured Skill API Integration
    Flask
    Django
    Python
    Git
    Problem Solving
    Data Analysis
    Back-End Development
    Software Development
    Machine Learning
    TensorFlow
    Web Development
    Web Application
    Artificial Intelligence
  • $15 hourly
    • 0.0/5
    • (0 jobs)
    Enthusiastic Android Developer with a passion for development. Experienced in working collaboratively with cross-functional teams to implement new features and enhance app usability. Skilled in Kotlin, MVVM architecture, and optimizing app performance. Experienced at troubleshooting, problem-solving, and maintaining software reliability. Strong communicator with attention to detail and a continuous learning mindset. Eager to contribute to innovative projects and deliver high- quality solutions in line with industry best practices.
    Featured Skill API Integration
    Database
    Firebase
    Android Studio
    Android SDK
    Android App Development
    Software Architecture
    Unit Testing
    JetPack
    Java
    Kotlin
    Multithreaded Programming
    Android
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