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  • $71 hourly
    • 5.0/5
    • (24 jobs)
    As a seasoned VP of Engineering with over 12 years of experience in software engineering, I bring a unique blend of technical expertise, leadership skills, and entrepreneurial spirit to drive innovation and growth. With a strong background in software development, I excel in designing and implementing scalable, high-performance systems that meet business needs. Technical Strengths: Proficient in a wide range of technologies, including Apis, Celery, Django, Flask, FastAPI, DjangoRestFramework, Docker, Github, Kafka, Kubernetes, Microservices, Pytest, Python, Redis, Rest, RQ/task-queue, RabbitMQ, WebSockets, and Real-time video processing (ffmpeg). I'm also a skilled DevOps with experience in Kubernetes, Cloud, Docker, Grafana, Prometheus, etc. Leadership and Management: Proven track record of building and leading high-performing engineering teams, with a focus on innovation, technical excellence, and mentoring. Successfully scaled companies' main applications to support significant user capacity growth, ensuring future readiness. Experienced in developing and implementing technology strategies that align with business goals. Freelance and Contracting Experience: 5-star rated freelancer on Upwork, with a proven ability to deliver high-quality code and build strong relationships with clients. Language Skills: Fluent in English (Native) and Portuguese (Native). I'm now seeking a challenging role that leverages my technical expertise, leadership skills, and entrepreneurial spirit to drive innovation and growth. Currently interested in everything AI/ML.
    Featured Skill REST
    Web Crawling
    Web Service
    Data Scraping
    API Development
    RESTful Architecture
    Django
    Python
    JavaScript
    jQuery
  • $50 hourly
    • 4.8/5
    • (31 jobs)
    Healthcare integration specialist focused on defining workflow specifications and input/output processes. Design, develop and maintain healthcare interoperability interfaces using standards such as HL7 v2.x, ASTM, and FHIR. Lead the integration of various Hospitals systems IT as well as developed and improve interfaces and workflows. Knowledge of interoperability technologies such as SOAP, RESTful, XML, and JSON. Mirth Connect expert and .NET Backend developer. Java developer using HAPI library. Experience in developing Windows Desktop Applications for more than 8 years (C# and WPF) Database knowledge: SQL Server, Oracle, Postgres SQL. # HL7 v2 Control Specialist Certification # HIPAA Compliance Certification by Udemy
    Featured Skill REST
    Healthcare IT
    Health Level 7
    JSON
    SOAP
    PostgreSQL Programming
    FHIR
    Mirth Connect
    API Integration
    RESTful API
    API
    RESTful Architecture
    XML
    .NET Framework
    C#
  • $25 hourly
    • 4.9/5
    • (48 jobs)
    Several years of experience in developing applications in following environments: Backend: PHP, C #; Front-end: HTML5, CSS3, Javascript (jQuery, angularjs, ...); Database systems: MySQL, PostgreSQL, SQL Server, DRUPAL I have over 5 years of experience in developing websites in Drupal. I've built dozens of sites in drupal 6, 7, 8 and 9. I do module development and error debugging and correction. I have a deep knowledge of how Drupal ecosystem works: a) Knowledge of the modules, the core drupal modules and contributed modules. b) Experience with main Drupal components : 1- Drupal's API: API Form, Field API, Database API, 2- Drupal Hook system, 3- Drupal theme layer and template system. 4- Menu and Taxonomy components I have knowledge and experience with the different layers of a web application in general and Drupal in particular: Database (mysql, sqlite, etc) Backend: Drupal ecosystem Front-end: drupal theme and template system, HTML, CSS, javascript / jQuery Other skills: GDPR compliance services Experience in webservices integration: REST, SOAP
    Featured Skill REST
    MySQL Programming
    PostgreSQL Programming
    RESTful Architecture
    ASP.NET
    HTML
    AJAX
    C#
    CSS 3
    .NET Framework
    HTML5
    CSS
    Drupal
    PHP
    JavaScript
    jQuery
  • $35 hourly
    • 5.0/5
    • (2 jobs)
    Solutions Architect and Cybersecurity Consultant with excellent knowledge in the Microsoft platform, having worked since the beginning of the career (more than 30 years of experience) with virtually all Microsoft products. Certificate MCITP, MCPD, MCTS, MCBMSP, MCBMSS, MCSE, MCDBA, MCSD, MCT. C|CT - Certified Cybersecurity Technician, working with Blue and Red Teams and with cybersecurity forensics. Consultant background with .NET and SQL related technologies and products on high transaction applications in small and large enterprise scenarios. Specialties: Excelent experience in development, management, configuration and troubleshooting of IT, involving all Microsoft technologies, especially SQL Server, Azure and .NET
    Featured Skill REST
    Blockchain
    RESTful Architecture
    Kubernetes
    Machine Learning
    Functional Programming
    Digital Forensics
    Embedded Application
    Microsoft SQL Server
    Database Development
    .NET Core
    Microsoft Azure
    Internet of Things Solutions Design
    C#
    Database Architecture
    Cloud Architecture
  • $40 hourly
    • 5.0/5
    • (14 jobs)
    Hi there, Thanks for visiting my profile and taking interest in reading it. Your needs: As you're visiting my profile, I assume that you might want to develop and bring an idea to life, have a problem that you need to fix, or just want to add some features to your current application. However, creating and maintaining a modern software application can be a risky journey! Many risks such as procedural risks, technical risks, and risks in hiring the right person or team await along the way and a few of them might be unavoidable. Where I come in: I specialize in creating modern software solutions for entrepreneurs, established companies and startups. Using the latest technologies and engineering methods, I can help you to build a great custom software solution tailored to your unique needs while minimizing risks and other factors that can break your budget. My process: Step 1 - Discovery (Understand your requirements) Step 2 - Brainstorming (Diving deeper into your vision. Develop a strategy to bring it into life.) Step 3 - Detailing Requirements (Revealing the hidden obstacles beforehand) Step 4 - Designing (Deciding colour palette and designing the User Interface) Step 5 - Developing (Working on Minimal Viable Product in an agile environment) Step 6 - Deploying (Releasing the version, Feedback from the market, adding new features) Values I add to the table: - Suggesting the best tech stack for your unique software. - Guiding non-tech people globally from initial struggle days to after deployment celebration. - Clear communication. - Experience of 10 years in development. - Upwork Certification - In-depth requirements understanding. - Development of the software using the end-user centric approach. - Covering all possible cases in your strategy. - Considering the non-functional aspects to make your software fast, secure and robust with the ability to scale it up. Preferred Tech Stack : Front-end: Vue, React, and Angular Back-end: Node, Express and Other Nodejs Frameworks Databases: SQL(MySQL,Postgres) and NoSQL(MongoDB, DynamoDB) Serverless: AWS Lambda, SAM, Step Functions, API Gateway, Route 53 and more Cloud: AWS with 20+ services for App Development and Deployment Platforms: Git, Github, JIRA/Trello, Slack, Skype/Google meet/Zoom Testimonials: "Sarjan is organised and highly skilled, and the quality of his work is first class. Add to this his approachability, ability to suggest better solutions to specific issues and excellent communication means that I have no hesitation in recommending him." - Mark Tomkins (Guidethrough) Invite me to your job and let's discuss your requirements over a virtual coffee.
    Featured Skill REST
    React
    Web Application
    Google Chrome Extension
    Browser Extension
    Angular
    Amazon Web Services
    ExpressJS
    HTML5
    CSS 3
    Vue.js
    Node.js
    JavaScript
    MongoDB
    AWS Application
    RESTful Architecture
  • $65 hourly
    • 5.0/5
    • (18 jobs)
    I've been working as a full-stack web developer since 2013, and in all those years, I haven't stopped trying to improve my approaches and keep up with best practices in the field. Here's what I bring to the table: ◈ Knowledge of Python2/Python3; Django/DRF/FastAPI; Javascript/ReactJS; and others. ◈ Ability to write a complete project from scratch. ◈ Strong communication skills and ability to work with other team members in a remote environment. ◈ Ability to work with mature projects: I can perform maintenance, support, development, and technical debt management. ◈ Ability to improve projects: linting, unit testing, refactoring, performance improvements, migrating from old framework versions to newer ones. ◈ Remote-first mindset. Since 2017, I've been working in a remote environment with clients and teammates from around the world. ◈ Building IT processes for non-tech-first companies: code review, feedback, Kanban process, and mentoring junior developers. ◈ Technical documentation analysis, budgeting, and estimating. ◈ Using an AI-powered assistant in my daily work (due to privacy concerns, the use of the assistant is discussed on a project-by-project basis). ◈ Prioritize the use of TDD principles in my development process to reduce the number of bugs in the product. ◈ Experience working primarily with small and medium businesses, helping them build web applications with fresh designs on ReactJS or pure HTML and CSS. ◈ Ability to deploy applications on Heroku and DigitalOcean and help with server deployment and CI/CD implementation to get the application in the hands of users quickly and efficiently. ◈ Key strength is ability to read and understand large codebases and identify areas where performance can be improved. If you're looking for a reliable person to build a new web application for your needs, drop me a line. I'd be happy to discuss your project and schedule a time for a meeting.
    Featured Skill REST
    CI/CD
    Heroku
    API
    RESTful API
    RESTful Architecture
    jQuery
    Bootstrap
    Python
    Docker
    Flask
    PostgreSQL
    JavaScript
    React
    CSS
    Django
  • $50 hourly
    • 5.0/5
    • (9 jobs)
    I'm a professional, college-educated software developer with years of experience, particularly in Python and OpenERP/Odoo. I'm also well versed in the basics of server administration in Debian & Ubuntu, including deployment, service supervision, proxy layers, etc. I've built clients and servers using multiple protocols such as SOAP, XML-RPC and HTTP (REST) / JSON. I'm familiar with multiple relational databases, especially PostgreSQL, and I can also code in multiple languages, including JavaScript.
    Featured Skill REST
    RESTful Architecture
    SQL Programming
    PostgreSQL Programming
    Unix
    Git
    System Programming
    Odoo Development
    Odoo
    Python
    JavaScript
  • $85 hourly
    • 5.0/5
    • (77 jobs)
    I'm a Power Platform passionate (and developer) with more than 15 years of experience providing high quality solutions on SharePoint and Power Platform. I have expertise in all versions of SharePoint on-prem from 2007 to 2019, and specially on SharePoint online (Office365). I'm also very experienced with Power Platform stack, namely Power Automate (Cloud and Desktop), PowerBI and PowerApps, that I've been working on since it's inception, building very complete, integrated and robust business applications. Not only a developer, I also act as a consultant advising the clients on the best approaches when gathering requirements.
    Featured Skill REST
    Microsoft Windows PowerShell
    Software Integration
    Microsoft Power Automate
    Microsoft PowerApps
    Microsoft SharePoint Administration
    Microsoft SharePoint Development
    SQL Server Integration Services
    RESTful Architecture
    Angular
  • $40 hourly
    • 4.6/5
    • (3 jobs)
    Senior Web Developer | Fullstack Specialist With over 10 years of experience in web development, I’ve spent the last several years honing my skills in backend development, focusing on designing scalable systems and delivering high-quality solutions. My expertise spans across modern web technologies, including Node.js (Next.js, Nest.js), React, and Web3, along with SQL/NoSQL databases, Docker, Kubernetes, Nginx, and RabbitMQ/Kafka. Industries & Clients: I've worked with a variety of industries, including fintech (classic and Web3), foodtech, and e-commerce, and have experience with both startups and enterprise-level clients. My focus is always on providing scalable, secure, and future-proof solutions. Problem-Solving & Deadline Management: Known for my ability to creatively overcome technical challenges, I manage tight deadlines by prioritizing tasks efficiently and maintaining clear communication with clients. I thrive in fast-paced environments where iterative development is key to delivering value. If you’re looking for a fullstack developer who can not only deliver high-quality code but also take ownership of the entire development process, let’s connect!
    Featured Skill REST
    Shopify Apps
    CI/CD
    React Native
    AWS Lambda
    RESTful Architecture
    TypeScript
    Kubernetes
    GraphQL
    Microservice
    Node.js
    MongoDB
    React
    JavaScript
    PostgreSQL
    Docker
  • $10 hourly
    • 5.0/5
    • (2 jobs)
    Hi, I'm Zé and I’m a software developer experienced in building Restfull APIs for the banking area. I'm also very accustomed to translating, speaking, writing and listening to english for several hours a day, which drives me to desire to get into translation jobs on my free time, between Portuguese and English. I am very focused on the client/user relationship and always look forward to help the best i can. - Knows Java, SpringBoot, SQL, Git, Postman - Regular communication is important to me, so let’s keep in touch.
    Featured Skill REST
    RESTful Architecture
    Java
    RESTful API
    English
    Translation
    Portuguese
  • $10 hourly
    • 0.0/5
    • (0 jobs)
    Projects Hubersity - React Native, Node.js, Express and MySQL A mobile application that puts university ́s basic services in the palm of our hands, things like meal reservations, ordering at the bar or paying for parking. GeoRecycle - Vue.js, Node.js, Express and MongoDB A gamified platform to encourage more people to recycle. ML Covid19 - Python, Jupyter Conducted detailed thorough preprocessing, performed training/testing, and utilized decision trees and random forest to analyze the dataset, predicting mortality in COVID-19 patients Alumni Managment App - Node.js, Express and MongoDB (ongoing) Backend app for managing alumni users at a college, you can see a dashboard about students and companies through several different filters and interact with other alumni through publications.
    Featured Skill REST
    API
    CSS
    Node.js
    Vue.js
    ExpressJS
    MongoDB
    JavaScript
    HTML
    RESTful Architecture
    RESTful API
  • $6 hourly
    • 0.0/5
    • (0 jobs)
    I'm a pragmatic and methodical professional with a passion for software, data and business. With a master's degree in medical informatics and working in the retail industry, I focus on bridging the gap between business needs and enterprise-level software implementation, delivering value by translating business requirements into actionable data and software solutions. I bring a strong knowledge of databases acquired both in academic and professional context, but I am comfortable working with any technology and always open for a challenge. As president of Azeituna and through part-time work in the customer service industry, I developed skills both in working and managing large projects, working with a team and dealing with tough situations.
    Featured Skill REST
    MongoDB
    RESTful Architecture
    GraphQL
    React
    Web Application
    Web Development
    Oracle APEX
    JavaScript
    Python
    Oracle PLSQL
    SQL
  • $30 hourly
    • 3.8/5
    • (3 jobs)
    I'm an Android Software Developer since 2010. I have several completed applications (you can see them in the portfolio). I'm interested in complex, challenging projects.
    Featured Skill REST
    SQL
    JSON
    SQLite Programming
    .NET Framework
    RESTful Architecture
    Android App Development
    SQLite
    Kotlin
    Java
    C#
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