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  • API
  • Programming
  • App Development
  • JavaScript
  • Software Development
  • App & Mobile Programming
  • React Native
  • Mobile App Development
  • Mobile App Marketing
  • Object Oriented Programming
  • Cloud Computing
  • Payment Gateway Integration
  • Python
  • React
  • Software Testing

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  • React typescript expert

    $40/hr Starting at $2K Ongoing

    Dedicated Resource

    Fluent in working TypeScript, Redux/Flux/Mobx/Zustand state tree, Hooks, Higher-Order-Component, ContextAPI, API integration using Axios. Working with Graphql,  Apollo I have solid experience in unit-test,...

    Apollo GraphQLArtificial IntelligenceBlockchainCMS DevelopmentIot Solutions
  • Node/Nest.js back-end development

    $50/hr Starting at $5K Ongoing

    Dedicated Resource

    At least 5+ years of experience with Node.js/Nest.js Working perfect with TypeScript. Hands-on expertise in REST, MySQL/PostgreSQL, WebSocket, MongoDB, Redis. Good experience with Prisma, TypeORM, Graphql...

    Amazon Web Services (aws)APIAWS CognitoJavaScriptMachine Learning
  • Booking Web Portal, Mobile app

    $35/hr Starting at $20K Ongoing

    Dedicated Resource

    A booking web and mobile app development service typically involves creating web and mobile applications that enable users to book various services or resources. These services can cover a wide range...

    APIApp DevelopmentArtificial IntelligenceBackend DevelopmentBooking
  • React Native Expert

    $40/hr Starting at $200 Ongoing

    Dedicated Resource

    Significant experience working with React web and mobile along with tools like Flux, Flow, Redux, etc. In-depth knowledge of JavaScript, CSS, HTML, functional programming, and front-end languages Strong...

    App & Mobile ProgrammingApp DevelopmentApple WatchiOS App DevelopmentIphone App
  • Ruby on Rails expert

    $50/hr Starting at $1K Ongoing

    Dedicated Resource

    Experience with Ruby on Rails, along with other common libraries such as RSpec and Resque Good understanding of the syntax of Ruby and its nuances Solid understanding of object-oriented programming Familiarity...

    APIDatabase DevelopmentProgrammingRSpecRuby on Rails
  • HR system development

    $40/hr Starting at $15K Ongoing

    Dedicated Resource

    The responsibility of an HR system development service typically involves designing, creating, implementing, and maintaining human resources software solutions for organizations. This service plays a...

    APIAutomation EngineeringCloud ComputingData ExtractionData Management

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Full Stack Software engineer

I am Oleg Teslenko, a software engineer with 8 years of full stack development experience.
I'm a senior-level, full-stack web developer who works with a flexible stack of frontend and backend technologies and has a deep understanding of best practices for web application architecture.
I believe in offering premium quality work to win long-term relationships with clients. I'll put my heart and soul into whatever work is assigned to me to meet your expectations.
My goal is to always perform at an exceptional level for all project that I will work.
I strive to delight my clients with every project I undertake, and I would love to do the same for you. Please reach out if you have any questions!
These are my main skills and responsibilities

• Design, develop, and test web and mobile applications.
. Infrastructure architecture, and management for the application.
• Writing maintainable and scalable code.
• Collaborate with Customers directly to imagine, design, develop, test, and launch the software.

- Front-end: React.js, Vue.js, Angular, Nuxt.js, Next.js, Gatsby.
- Back-end: Python, Django, Node.js, Nest.js, Ruby on Rails, Serverless framework
- Mobile: React Native, Ionic, Kotlin, Swift, Xamarin, Java
- AWS, GCP, Azure, Digital Ocean

Work Terms

Full Time Available
Free Bug Fix
Free Consultation
40-50 hours per week