Freelancers para contratação em Poland
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Mostrando 9 resultados
Freelancers Patrocinados
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As a senior blockchain & financial engineer and full stack web developer, I have more than 6 years of professional experience that is organized, collaborative and highly skilled in a dynamic and deadline-driven work environment. I have built several NFT Minting Platform and NFT Marketplace on multi-chain (Ethereum,...As a senior blockchain & financial engineer and full stack web developer, I have more than 6 years of professional experience that is organized, collaborative and highly skilled in a dynamic and deadline-driven work environment. I have built several NFT Minting Platform and NFT Marketplace on multi-chain (Ethereum, BSC, Polygon, Solana) from scratch with all algorithm and infrastructure design and workflow planning, Smart contract development, UI/UX design, front-end and back-end parts development,testing deploying and maintaining the end-products. I have also rich experience with React.js and Vue.js for frontend especially using Redux (Thunk or Saga) or VueX and various backend frameworks including Node.js, Django, Flask, Golang using MySQL, PostgreSQL, MongoDB for 8+ years. menos
Contratar oscar903
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I am a 6+ years experienced web development professional armed with hands-on experience in designing, developing, testing, and debugging highly responsive user interface components by using AngularJS, React.JS, Typescript, NextJS, HTML, CSS and so on. I have mastered several React.js frameworks such as Redux,...I am a 6+ years experienced web development professional armed with hands-on experience in designing, developing, testing, and debugging highly responsive user interface components by using AngularJS, React.JS, Typescript, NextJS, HTML, CSS and so on. I have mastered several React.js frameworks such as Redux, Material ui, React bootstrap and semantic UI React. Specially, I am always orienting my works as creative and innovatory masterpieces. menos
Contratar james0297
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As a Rust, Golang, and Blockchain web developer, I possess a unique skill set that blends performance-driven programming with blockchain expertise. Proficient in Rust, I specialize in crafting high-performance web applications that prioritize security and efficiency. With Golang proficiency, I bring scalability and...As a Rust, Golang, and Blockchain web developer, I possess a unique skill set that blends performance-driven programming with blockchain expertise. Proficient in Rust, I specialize in crafting high-performance web applications that prioritize security and efficiency. With Golang proficiency, I bring scalability and simplicity to web development projects, ensuring robust backend services and APIs.I have a proven track record of delivering innovative web solutions, particularly in decentralized finance (DeFi) and supply chain traceability. A collaborative team player, I thrive in agile environments, where I contribute actively to cross-functional teams, driving success through effective communication and problem-solving skills. menos
Contratar artursriders
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- Python, Django, Geoserver, Postgis, GIS, JSPRIT, Fintech - 15 years experience in ETL various data structures and DBs , including Oracle, PostgreSql, XML, SAP Integrations etc. - 12 years experience in Python : Django Forms, Django Rest Framework, DRF, Django Admins, Django + Kerberos, Swagger, Micropython - 10...- Python, Django, Geoserver, Postgis, GIS, JSPRIT, Fintech - 15 years experience in ETL various data structures and DBs , including Oracle, PostgreSql, XML, SAP Integrations etc. - 12 years experience in Python : Django Forms, Django Rest Framework, DRF, Django Admins, Django + Kerberos, Swagger, Micropython - 10 years experience in Slack API, Allegro Rest API, Oauth 2.0, Allegro API, HERE Api, Raspberry Pi, Arduino - 8 years experience in administration : Oracle +ASM on Red Hat, Ubuntu Server VPS, Nginx, Apache,Nginx, PostgreSQL. Please do not hesitate to contact me if you need more information. I look forward to difficult challenges radny1984@gmail.com Portfolio: https://poradzisz.tech/about/portfolio/ menos
Contratar radny1984
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I am a 6+ years experienced web development professional armed with hands-on experience in designing, developing, testing, and debugging highly responsive user interface components by using AngularJS, React.JS, Typescript, NextJS, HTML, CSS and so on. I have mastered several React.js frameworks such as Redux,...I am a 6+ years experienced web development professional armed with hands-on experience in designing, developing, testing, and debugging highly responsive user interface components by using AngularJS, React.JS, Typescript, NextJS, HTML, CSS and so on. I have mastered several React.js frameworks such as Redux, Material ui, React bootstrap and semantic UI React. Specially, I am always orienting my works as creative and innovatory masterpieces. menos
Contratar nathan773
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Professional Java development for 10+ years. Expert level in Core Java, deep understanding of both «Java Concurrency in Practice» and Java Memory Model. Solid knowledge of algorithms and data structures with their complexity. Large experience of memory and performance profiling. Basics of Scala. Knowledge and...Professional Java development for 10+ years. Expert level in Core Java, deep understanding of both «Java Concurrency in Practice» and Java Memory Model. Solid knowledge of algorithms and data structures with their complexity. Large experience of memory and performance profiling. Basics of Scala. Knowledge and experience with BigData ecosystem (Spark, Hadoop). Multidimensional OLAP, ActivePivot. Ability to write nice, clean, extensible, robust code. UML, solid understanding and ability to apply OOP design patterns. Sense of quality, large experience in testing (unit, integration tests, code coverage and performance profiling). Experience with containers (Docker, K8s). Good knowledge of Linux, fluent Bash scripting. Cloud technologies (AWS, Azure). Experience of successful technical leadership in small teams. Practical knowledge of agile processes. Open and clear communication. Ability to observe and decompose tasks, formulate the completion criteria, estimate real duration, track the progress. Ability to write nice and clear documentation, to present the results. Vision of customer's demand, good usability expertise. menos
Contratar Ivan0512
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I'm extremely experienced in Web & Mobile application development especially, with 5+ years of experience. I got an excellent reputation for resolving problems and improving users' satisfaction. I have extensive knowledge of web frontend, backend, mobile app programming, I find myself suitable for full-time position...I'm extremely experienced in Web & Mobile application development especially, with 5+ years of experience. I got an excellent reputation for resolving problems and improving users' satisfaction. I have extensive knowledge of web frontend, backend, mobile app programming, I find myself suitable for full-time position that offers professional challenges that require interpersonal skills, excellent time management and problem solving skills. - Web development ✔ MERN Stack ✔ Angular 9, ReactJS ✔ NodeJS, Express, sailsjs, loopback ✔ SQL(MySQL, PostgreSQL), NoSQL(MongoDB, CouchDB) ✔ HTML5, CSS3, Sass/Less, Bootstrap ✔ Javascript(ES5/ES6+, Babel), jQuery, DHTMLX, Typescript, D3.js, Socket.IO, Three.js ✔ Test: Jest, Jasmine, Mocha, Karma, Chai ✔ UI/UX, responsive web ✔ Firebase, AWS, GCP ✔ Stripe, Paypal, Yodleeany timezone and available 24*7 on any platform. - Mobile app development ✔ iOS, Android ✔ Swift, Objective-c, Kotlin, Java, React Native, Flutter menos
Contratar Andrii2224
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✅ 15+ years of experience ✅ 70+ projects delivered ✅ 10k+ Hours ✅ 100% Success Score ✅ 5 Stars ✅ Backed by a skilled team for handling complex projects Doubtful about finding a developer who can handle complex challenges or pick up the pieces from a previous failure? Wondering if it's possible to have a bug-free,...✅ 15+ years of experience ✅ 70+ projects delivered ✅ 10k+ Hours ✅ 100% Success Score ✅ 5 Stars ✅ Backed by a skilled team for handling complex projects Doubtful about finding a developer who can handle complex challenges or pick up the pieces from a previous failure? Wondering if it's possible to have a bug-free, scalable solution? I've seen and solved it all. With a commitment to deliver and a track record of success, I am here to protect your project from common setbacks and elevate it to its highest potential. Hi! I'm a Senior Full-stack developer with over a decade of experience in the tech industry. I specialize in delivering comprehensive frontend and backend solutions, from concept to deployment, bolstered by solid experience as a Solution Architect and a Dev Lead. In 2015, I gathered my own web dev team from the ground up, as an extension of my software developer expertise and wisdom. Now, with over70 successful projects behind us, we focus on creating IT solutions for businesses to guarantee their growth and prosperity. ---=== Why I Stand Out: ===--- - Unmatched Reliability: Every project I undertake is guaranteed to reach completion, irrespective of the initial condition or challenges encountered along the way. - Continuous Support: My relationship with clients extends beyond project completion. I offer ongoing support to ensure continued success and adaptability in an ever-evolving digital landscape. - Scalable Team Leadership: While I thrive as a sole developer, I also lead a talented team of developers, ready to scale according to your project needs. This flexibility allows me to tackle projects of any size and complexity, delivering high-quality solutions on time and within budget. - End-to-End Solutions: From initial consultation to final delivery, I manage all phases of the development cycle. ---=== My Technical Foundation: ===--- - Frontend Expertise: Proficient in HTML, CSS, JavaScript, TypeScript, and an array of frameworks & libraries including React.js (with Redux, Thunk, Sagas, Next.js), Bootstrap, Material UI, CSS in JS, Tailwind, and React-Admin. - Backend Proficiency: Skilled in Node.js, Express.js; along with Feathers.js, RESTful API, GraphQL development, Socket.IO, Strapi, and BullMQ. - Data Visualization Mastery: Experienced with D3.js, Chart.js, GSAP, Three.js, React Three Fiber, and techniques involving Canvas and SVG. - Database Management: Competent in managing data using SQL, PostgreSQL, MongoDB, and ElasticSearch. -DevOps & Deployment: Knowledgeable in Docker, Kubernetes, and implementing CI/CD pipelines with GitHub, GitLab. menos
Contratar rostcompany
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ChatGPT, Armazenamento de Dados, Administração de Bancos de Dados, Desenvolvimento de Banco de Dados, Programação de Banco de DadosI am a developer with extensive experience (15+ years). I specialize mainly in database and back-end solutions. I possess well-developed analytical and communication skills. I excel in both individual and teamwork settings. I am certainly characterized by a great determination in action and flexibility. Despite my...I am a developer with extensive experience (15+ years). I specialize mainly in database and back-end solutions. I possess well-developed analytical and communication skills. I excel in both individual and teamwork settings. I am certainly characterized by a great determination in action and flexibility. Despite my experience, I am open to further development, whether it be learning a new language, tool or enhancing existing skills. menos
Contratar JZwier
