Hire the best API Developers in Lisbon, PT
Check out API Developers in Lisbon, PT with the skills you need for your next job.
- $60 hourly
- 5.0/5
- (28 jobs)
🚀 Turning your vision into scalable, high-performance digital solutions! 🏆 6 years experience | 2,500+ Upwork hrs | 25+ successful large-scale projects | Top Rated | 100% Client Satisfaction (JSS) | Proven track record & stellar client feedback! 🌟 Looking for a Full-Stack Team Leader who can turn your vision into scalable, AI-powered applications? I specialize in crafting robust backends, dynamic frontends, and intelligent integrations using modern technologies such as React, Node.js, and advanced AI frameworks. With 6 years of experience—and over 2,500 hours logged on Upwork across 25+ projects—I ensure that your web or mobile application is not only highly functional but also future-ready with cutting-edge features. What I Bring: Seamless Full-Stack Expertise: From creating responsive frontends with React and Next.js to building scalable backends with Node.js, Flask, and Laravel. AI and Chatbot Development: Integration of AI-driven features, including ChatGPT-powered chatbots for personalized user experiences and automation. Database Proficiency: Skilled in MySQL, Supabase, and MongoDB for scalable, secure, and efficient data solutions. Performance Optimization: Strong focus on speed, SEO, and responsiveness for exceptional user experiences. Blockchain Knowledge: Experience building dApps with Ethereum for cutting-edge decentralized solutions. Recent Achievements: Designed and deployed a social networking platform with AI-powered post recommendations, boosting user engagement by 40%. Built and integrated a ChatGPT-based chatbot for a customer support system, reducing response time by 60% and improving user satisfaction. Developed a full-stack e-commerce application using the MERN stack with intelligent product recommendations and real-time order tracking. Created a custom React-based dashboard for a global client, praised for its intuitive design and high performance. Skills & Expertise: 🔹Front-end: Proficient in ReactJS, Gatsby, Next.js, and React Native for crafting UI. 🔹Back-end: Solid understanding of NodeJS and ExpressJS. Flask, Laravel. 🔹Languages: Comfortable with JavaScript, Python, PHP, Typescript, HTML, and CSS. 🔹Design: Skilled in design libraries like Material UI and Antd for appealing interfaces. 🔹React Specialization: Expertise in Redux and Hooks for enhanced app performance. 🔹Database Handling: Experienced in managing MongoDB and Firestore. 🔹Content Management: Proficient in tools like Prismic, Strapi, etc. 🔹Technical Proficiency: Familiar with GraphQL, Webpack. 🔹Version Control: Proficient in utilizing Github, BitBucket, Gitlab. 🔹Cloud Capabilities: Able to leverage AWS to deploy scalable applications to the cloud. 🔹Interactive Preview: Creating interactive components using Storybook. 🔹Dev Tools: I always have Github Copilot backing me up to speed up development. Client Testimonials: "One of the best developers I worked with so far. Good work quality, communication and output. You would be a fool to skip on such a great candidate!" - Eugene, Shosho. "Maaz is an excellent communicator and his mastery of the English language is unparalleled by any other freelancer I have ever hired. He understands what the end result looks like and knows the pitfalls to avoid along the way. He is willing to go the extra mile and this is the reason I have hired him more than once and will rehire when the time comes." Ryan, Ninja Devs If you're looking for a developer who combines technical excellence, AI innovation, and user-centric design, let’s collaborate to create something extraordinary! 🚀
API Development
Node.jsCSSHTML5TypeScriptTailwind CSSWeb Application DevelopmentResponsive DesignNext.jsMobile App DevelopmentJavaScriptReact NativeReactFront-End DevelopmentFull-Stack Development - $39 hourly
- 4.2/5
- (11 jobs)
🚀 𝗛𝗲𝗮𝗱𝗹𝗲𝘀𝘀 𝗖𝗠𝗦 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗶𝘁𝗵 𝗦𝘁𝗿𝗮𝗽𝗶, 𝐒𝐚𝐧𝐢𝐭𝐲, 𝐚𝐧𝐝 𝐆𝐡𝐨𝐬𝐭 𝗖𝗠𝗦 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 🏆 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 | 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 📈 𝗣𝗿𝗼𝘃𝗲𝗻 𝗧𝘆𝗽𝗲𝗦𝗰𝗿𝗶𝗽𝘁, 𝗥𝗲𝗮𝗰𝘁, 𝗡𝗲𝘅𝘁.𝗷𝘀, 𝐒𝐯𝐞𝐥𝐭𝐞𝐤𝐢𝐭, 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗮𝗻𝗱 𝗧𝗮𝗶𝗹𝘄𝗶𝗻𝗱 𝗖𝗦𝗦 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 🧙♂️ 𝗢𝘃𝗲𝗿 𝟓𝟎+ 𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁, 𝗟𝗮𝗻𝗱𝗶𝗻𝗴 𝗣𝗮𝗴𝗲 𝗮𝗻𝗱 𝗪𝗲𝗯 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗖𝗮𝘀𝗲𝘀 If you're looking for a reliable Web developer who understands your business requirements and delivers exactly according to your needs, then you're in the right place. I build scalable web applications using React, Next.js, Sveltekit, TypeScript, and Headless CMSes Strapi, Sanity, Ghost, etc 𝗕𝗘𝗡𝗘𝗙𝗜𝗧𝗦 𝗢𝗙 𝗪𝗢𝗥𝗞𝗜𝗡𝗚 𝗪𝗜𝗧𝗛 𝗠𝗘 ✓ 𝗧𝗿𝗮𝗻𝘀𝗽𝗮𝗿𝗲𝗻𝘁 𝗖𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻: Weekly updates so you’re always in the loop. ✓ 𝗙𝗹𝗮𝘄𝗹𝗲𝘀𝘀 𝘁𝗶𝗺𝗶𝗻𝗴 𝗮𝗻𝗱 𝗯𝘂𝗱𝗴𝗲𝘁𝗶𝗻𝗴: Your project stays on track and on time thanks to a strict roadmap that prevents unexpected costs. ✓ 𝗗𝗲𝗱𝗶𝗰𝗮𝘁𝗲𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿: Unlike big agencies that hand off your project, I will see you through from start to finish so that there’s a single point of contact and fast turnaround times. 𝗟𝗘𝗧'𝗦 𝗪𝗢𝗥𝗞 𝗧𝗢𝗚𝗘𝗧𝗛𝗘𝗥 If you’re ready to turn your vision into a reliable app that your users will love then we should talk. Feel free to send me a message. We can arrange a short call with no obligation to go over your project and see whether we're a good fit to work together. Get in touch now! 𝐊𝐄𝐘𝐖𝐎𝐑𝐃𝐒: JavaScript, React, Node.js, Web Development, Strapi, Sanity, Ghost, Next.js, Sveltekit, CSS, TypeScript, API, HTML, WordPress, PHP, Tailwind CSS, API Integration, Front-End Development, Web Application, Web Design, Website, PostgreSQL, MongoDB, Git, Landing Page, MySQL, Responsive Design, GraphQL, Python, CMS Development, HTML5, React.
API Development
Ghost CMSContentfulStrapiCustom Ecommerce Platform DevelopmentEcommerce Website DevelopmentSaaS DevelopmentFull-Stack DevelopmentNode.jsFront-End DevelopmentWeb DesignReactNext.jsTypeScriptGraphQL - $85 hourly
- 4.7/5
- (25 jobs)
I am a seasoned software engineer specialising in scalable, high-performance backend applications using Python technologies, focusing on long-term growth and maintainability. I bring technical excellence, reliability, and clean architecture to every project. Beyond technical expertise, I offer a business-driven mindset, bringing ideas and strategic insights to help define the next steps for your product’s growth. I thrive in collaborative environments, seamlessly integrating into teams with charisma, sincerity, and adaptability. My ability to bridge technical solutions with business objectives ensures that development efforts always align with your company’s success. I leverage AI-driven development tools like ChatGPT, DeepSeek, and advanced IDE integrations to streamline workflows, optimise code quality, and reduce development time. This ensures faster and more efficient delivery of quality solutions. - Strategic, Business-Oriented Development: I don’t just write code; I contribute to the growth roadmap of your platform, helping you make scalable and future-proof decisions. - Efficient & Scalable Solutions: I design backend systems that handle high traffic and complex workflows while ensuring performance and maintainability. - API & Platform Development: extensive experience in designing, developing, and integrating RESTful APIs to power SaaS platforms and enterprise applications. - Long-Term Collaboration & Reliability: whether for a one-off project or ongoing engagement, I ensure your product remains competitive and well-maintained. - Quality & Best Practices: I emphasise clean, maintainable code, testing, and robust security standards to ensure a solid backend foundation. - Seamless Team Integration: My strong communication skills, adaptability, and sincerity make me a valuable team player in remote environments. ⸻ Professional Experience (On-Site) • Senior Backend Contractor – Remote backend engineering for various companies, delivering reliable, well-architected solutions. • Python Engineer, London – Built scalable platforms at TutorCruncher.com and Tangent.co.uk, working with clients like Wolseley and PepsiCo. • Software Engineer, Helsinki – Contributed to SSH Communications Security for their Key-Manager product (company behind SSH protocol). • Dedagroup – Developed backend & mobile applications supporting Alzheimer’s patients, caregivers, and doctors. • Diverse Client Portfolio – Worked with Ribose on open-source projects for IETF, CompareEurope, Crowdbotics, IOT Valley, Civic Vision, Autokroma, MTL-Guide, DYEL Labs, The New Boston, Gaman Corp, and Shakti. • Technical Interviewer (2021-2022) – Conducted 100+ technical interviews, assisting companies in hiring backend engineers. ⸻ Education Double Master’s Degree in Software and Service Architectures, with a minor in Innovation & Entrepreneurship: combining strong technical skills with a business-oriented mindset. ⸻ Preferred Tech Stack Python3.12, Django/FastAPI, PostgreSQL, Redis, Celery, Docker
API Development
Django StackAPIIT RecruitingWeb ApplicationAPI IntegrationDjangoWebsocketsPythonSoftware DesignDockerSoftware Architecture & Design - $120 hourly
- 5.0/5
- (24 jobs)
Do you need to turn AI generated code into a real production ready system? Did your prototype start breaking and you’re stuck? I’ll help you get to the next level. Over 20 years of business experience in various sectors and extensive practical knowledge of software development. My goal is to help you save both money and time. Money: - Audit the teams to make sure they are lean - Check that internal/external dev teams are not doing unnecessary jobs - Interview developers and give hiring recommendations to avoid dead weight Time: - Improve or develop architecture for your application or start-up - If you hire me before starting the development process, I'll help you select a technical stack that will let you build quicker and cheaper, with a smaller development team - Provide a developer from a pool of trusted and tested professionals Ping me for a free 30 minutes zoom call.
API Development
DatalogAutomationWeb ApplicationClojureScriptBusiness AnalysisBot DevelopmentClojureSQLPython - $100 hourly
- 5.0/5
- (5 jobs)
Knowledge and will.
API Development
FirebaseAWS CloudFormationFlutterSalesforceServerless ComputingGoogle Cloud PlatformAWS LambdaJavaScriptPythonLaravelNode.jsMySQLAmazon Web ServicesTypeScript - $35 hourly
- 5.0/5
- (7 jobs)
Are you seeking a software developer who will journey with you from concept to completion? I am a passionate freelance software developer dedicated to solving complex real-world problems with cutting-edge technologies. With over a decade of experience, I've collaborated with both startups and enterprises, crafting scalable software solutions that seamlessly serve millions of users. My expertise includes React Native, NextJS, and NestJS—proven technologies I’ve mastered to build robust and scalable applications. As a former CTO and Full Stack developer for multiple startups, I prioritize effective communication and teamwork, understanding their critical roles in achieving success. Whether you're looking to create an innovative new product or enhance an existing solution, I am here to transform your vision into reality with my skills and enthusiasm for coding. Let's collaborate to create something truly remarkable!
API Development
CSSNestJSExpressJSUnit TestingNext.jsPythonPostgreSQLReact NativeReactNode.jsMongoDB - $50 hourly
- 0.0/5
- (0 jobs)
For the past 10 years I have been working mainly as a TIBCO Developer and MuleSoft Developer in projects based in Amsterdam, Barcelona, Brussels, and Lisbon for clients operating in several different sectors: Gaming, Banking, Pharma, Energy and Airlines. Plus, I also had the chance to get certified as UiPath RPA Developer, Mulesoft 4 Certified Developer - MCD (x3), Mulesoft Certified Platform Architect - MCPA, WSO2 EIterprise Integrator 6 Developer, AWS Cloud Practitioner and Microsoft Azure Fundamentals AZ-900. Currently remote based in Lisbon.
API Development
Cloud ServicesLow-Code DevelopmentAPI IntegrationData IntegrationMulesoftTIBCO ActiveMatrix BusinessWorks - $88 hourly
- 0.0/5
- (1 job)
I’ve helped companies scale e-commerce projects from $0 to $1M+/month, partnered with big-tech companies like Microsoft to eliminate $1.5M+ of unnecessary technical costs, and slashed product release times by more than 50x for multi-national businesses – all through the pragmatic use of AI, Automation, Process Optimisation, and Engineering. 💸 Some highlights👇 ► As a lead consultant, I spearheaded the engineering team for Specsavers ($5B+ org) to scale a key e-commerce product line from $0 to $1M+ monthly (across multiple countries and languages) ► In partnership with Microsoft, I unlocked over $210,000 of annual savings via workflow automation, cloud infrastructure optimisation and streamlined development processes. These same methods were then applied to a second department to achieve over another $290,000 of annual savings. ► I designed and automated the entire disaster recovery plan for TPP ($1B MedTech Unicorn) and successfully demonstrated this by safely migrating over 50M+ patient records. ► I transformed tech recruitment processes and successfully landed over 30 extremely sought-after graduates from Oxford and Cambridge through data-driven marketing and refined candidate experiences (some of the most in-demand graduates in the world!) ► At BJSS, a Forbes-ranked global tech consultancy, I built non-invasive feedback systems that guided major improvements in team structure, communication protocols, and workflow tooling, boosting engineer satisfaction by over 55% in just 3 months. ► I was awarded the Sir Francis Goldsmid Scholarship for outstanding academic achievement at Cambridge University (Information and Computer Engineering) And finally, whilst I’m obviously passionate about AI, Automation and Technical Innovation, I think it’s extremely important to apply a human-centred mindset to my analysis, interactions and solutions at all times - it just leads to much greater outcomes! If you think I can help, I'd love to hear from you. Luke 😎
API Development
Google Apps ScriptMake.comProject Management SoftwareLead GenerationClaudeGeminiChatGPTSoftware DevelopmentProcess OptimizationWeb ScrapingEmail OutreachAutomationn8nArtificial Intelligence - $60 hourly
- 0.0/5
- (0 jobs)
📌 Data Science | Machine Learning | Geospatial Analytics I’m a data scientist with expertise in machine learning, AI, and geospatial analytics. Whether you need data-driven insights, predictive modeling, or spatial analysis, I can help turn complex datasets into actionable solutions. 🔹 Expert in data science & AI: Python, PyTorch, TensorFlow, Scikit-learn, deep learning 🔹 Geospatial analytics & remote sensing: GIS, Google Earth Engine, satellite image processing 🔹 Data engineering & visualization: Pandas, Geopandas, SQL, interactive dashboards 🔹 Custom workflows & automation: End-to-end model development and deployment I’ve worked with Nokia Bell Labs, The World Bank, GeoKapti, and DMA Analytics, leading projects in AI, urban analytics, and environmental monitoring. I value clear communication, efficiency, and delivering high-quality solutions. 🚀 Open to discuss and adapt to your particular needs.
API Development
Research & DevelopmentMachine LearningGeospatial DataDeep LearningRemote SensingData ExtractionArtificial Intelligence - $20 hourly
- 5.0/5
- (1 job)
I'm a Full Stack Developer with experience in building small to medium sized businesses. If you need help to fix bugs or create an online website I'm here to help you! Expertise: Javascript (ES6), HTML, IOS, React, Swift, MongoDB, Cocoapods, Express , IOS animations, NodeJS, Firebase, CSS, Rest API
API Development
Agile Project ManagementMERN StackFirebaseAPIRESTful APIBootstrapCSSJavaScriptMongoDBReactHTMLNode.jsWeb Development - $20 hourly
- 0.0/5
- (0 jobs)
Hello! I'm a passionate web developer with significant experience in crafting modern and elegant web solutions. My expertise revolves around technologies such as React, Next.js, Node.js, and CSS. With a user-centered approach and a passion for creating amazing online experiences, I'm always on the lookout for exciting challenges in the world of web development. What I do best: Front-end Development: I have a deep knowledge of React and Next.js, enabling me to create highly responsive and dynamic user interfaces. I love turning creative designs into functional and appealing web pages. Back-end Development: With Node.js, I build robust and scalable servers to support web applications. My experience spans from creating RESTful APIs to implementing authentication and database management. Styling with CSS: I have a keen eye for design and can create stylish and consistent styles to ensure your websites stand out visually. Effective Collaboration: I'm a skilled communicator and accustomed to working in distributed teams. I can easily integrate into existing projects or lead initiatives from start to finish. Problem Solving: I enjoy tackling complex technical challenges and finding creative solutions. I stay updated with the latest trends and best practices in web development. I'm committed to delivering high-quality projects on time and within budget. If you're looking for an experienced and dedicated web developer for your next digital mission, I'm ready to help. Let's work together to turn your ideas into reality! I'm available to discuss your projects and specific requirements. Let's create something amazing together!
API Development
React NativeWeb UIJavaScriptWeb ApplicationCSSAPIReactNext.jsNode.jsSwaggerUser Interface DesignUI GraphicsResponsive Design Want to browse more freelancers?
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