Candidates 4844
$5000 / mo
≈ $60000 / year net
Software Engineer (Front-end)
Ukraine · Kharkiv · 5 years of experience · Advanced/Fluent ·Published today
Ukraine · Kharkiv · 5 years of experience · Advanced/Fluent ·Published today
Worked on several projects. (Construction, Rental, Fitness, Service platform). My usual tech stack includes React, Redux, Typescript, Next.js. I do have basic understanding how to work with Node.js/Express.js and I am eager to deeper it even more. I was also able to interact with different visual libraries like AntD, SemanticUI, MaterialUI. Have experience in writing tests with Jest, Enzyme, React testing library.
$3000 / mo
≈ $36000 / year net
Frontend Developer (React)
Ukraine · 9 years of experience · Intermediate ·Published today
Ukraine · 9 years of experience · Intermediate ·Published today
Expertise in both client-side and server-side technologies includes using Next.js for CSR, SSR, and SSG. I am currently studying to enhance my full-stack development skills, particularly focusing on Node.js.
I started my IT career as a web designer in 2010 and now have expertise in UI/UX design, which lets me offer consulting and share good ideas. I regularly test different tools to find the best solutions.
- Initiated and led the standardization of work processes in the front-end department, enhancing development efficiency.
- Led a team of up to 5 developers, fostering collaboration and boosting productivity.
- Engineered browser extensions to improve user experiences and add functionality.
- Designed tools that automate development workflows, significantly increasing efficiency.
- Being part of a dynamic and skilled team
- Opportunities for personal and professional development
- Applying all my skills and experience to achieve impressive results
- Flexible work schedule focusing on results, not processes
$5000 / mo
≈ $60000 / year net
Developer
Romania · More than 10 years of experience · Intermediate ·Published today
Romania · More than 10 years of experience · Intermediate ·Published today
$2500 / mo
≈ $30000 / year net
React / React Native Developer
Ukraine · 5 years of experience · Advanced/Fluent ·Published today
Ukraine · 5 years of experience · Advanced/Fluent ·Published today
My skill set includes JavaScript (ES6/ES7+, Babel), TypeScript, Next.js, React.js (including Hooks), React Native, Redux, Redux-Saga, React-query, GraphQL, Apollo, REST API, Webpack, Npm, Yarn, Firebase, MongoDB, MySQL, and PostgreSQL. Additionally, I am experienced in building REST APIs and have a good understanding of GraphQL. Deploying to TestFlight/TestFairy, AppStore, and Play Market. Additionally, I have experience with version control tools like GitHub, GitLab, and Bitbucket, as well as project management tools such as Jira, Trello, and ClickUp. I am also proficient in design tools like Figma, AdobeXD, and Zeplin.
Here are examples of my work:
Dashlane - is a subscription-based password manager and digital wallet application, I worked there as a front-end developer and implemented styling and functional features
Vuukle - is the world's first Publisher Workspace solution designed to maximize ad revenue, improve site speed, and amplify audience engagement. In this project, I worked as a Full-stack developer and my main specialty was working with APIs and making a functionality
Indy.gov - CityBase builds technology that unifies the way people find, apply for, and pay for public services. Stack: React, Redux, Typescript
Nava-Co - It’s a shopping app with, custom push notifications, sale events, social sign-in, inventory search, following, liking, and other social features. Stack: React Native, Redux, JS, Firebase
Mangamo - it's a digital reading app with complex using tracking custom polish notifications using Firebase, Hi-Res images, and fluid animations. It was developed using React Native, Redux, MUI, SQL, MongoDB, NodeJS, and Firebase.
$2500 / mo
≈ $30000 / year net
React/React Native Developer
Ukraine · 5 years of experience · Advanced/Fluent ·Published today
Ukraine · 5 years of experience · Advanced/Fluent ·Published today
I'm a React developer, during my career, I built more than 30 projects using React and related technologies. I can work individually and as a part of a team, I'm continually growing up myself and making the best solutions.
I'm highly skilled in technologies such as JS, TypeScript, Next.js, React.js, Redux, Redux-Saga, React-query, GraphQL, Apollo, REST API, Webpack, Npm, Yarn, and Firebase. Also, I have experience with version control tools like GitHub, GitLab, Slack, and Bitbucket, as well as project management tools such as Jira, Trello, and ClickUp.
Here are examples of my previous projects. Please take a look at them:
Virtusan - I developed this website for a recent client using Nextjs for SSR and fast loading time.
Workhint - it's the ultimate tech platform that simplifies the process of categorizing, hiring, and compensating independent contractors all in one place. This project I built from scratch by myself and used React and Tailwind.
$4500 / mo
≈ $54000 / year net
Senior Fullstack JS dev (react, node.js) | Team lead
Ukraine · Kyiv · 5 years of experience · Upper-Intermediate ·Published today
Ukraine · Kyiv · 5 years of experience · Upper-Intermediate ·Published today
On the project, I was single frontend dev. The app was released on November 27, 2019.
In the summer of 2020, I began working closely with the backend team on services that download and process data from exchanges. Development + profiling and optimization.
At the end of 2020, I implemented the WS API.
At the beginning of 2021, the team expanded and I received the position of technical lead.
At the end of 2021, the product encountered critical technical problems due to a sharp influx of users. In a short time, me and DevOps revised the architecture of the entire backend. The data in the database grew by several GB per day.
My team size has grown to 10 people.
In 2022, we wrote our own UI/UX library.
In 2023, due to a significantly increased load, I, as a CTO, made a change in architecture.
To solve load problems, we used different databases: Scylla, Cassandra, Timescale, CockroachDB
Redis replace to KeyDB and DragonflyDB
The microservice architecture for the main core was replaced to a monolith with a pool of workers.
Front migrated to Next.js. The technical solutions needed by the business did not allow the use of Cloudflare Pages, Digital Ocean, Vercel, so the front moved to a self-hosted solution. Added monitoring via Sentry
In 2024, integrated workers into the web app. To improve performance.
Stack part:
- Next.js (React.js)
- D3.js
- Node.js
- Postgresql/Timescale/MongoDB
- Docker
- REST API
- Redis/KeyDB/DragonflyDB
Currently, the application serves several thousand online and provides up to 100 TB of data to users monthly.
The daily volume of incoming data for processing is approximately 500GB
After processing - 4-5 TB per day
You can view the product - resonance .vision/rtt
In the current company, I hold the position of CTO, but the product has stopped being actively developed and switched to deep optimization and scaling, according to the plan prescribed for the year.
In the next year, I want to use my technical experience and skills in working with high-load applications and bigger teams. I want to pass on my experience and knowledge to people. And improve products.
Because in my current company, I have practically no activities.
Daily volume of incoming data for processing approximately 500GB
After treatments, 4-5 TB per day comes out
You can view the product via the link - resonance .vision/rtt
$7000 / mo
≈ $84000 / year net
Senior .Net Developer
Mauritius · 6 years of experience · Upper-Intermediate ·Published today · In passive search
Mauritius · 6 years of experience · Upper-Intermediate ·Published today · In passive search
1st company– Kiev, Ukraine
Full-Stack development and supporting a number of systems for customer from Western Europe.
Responsibilities:
- Development of systems with different architectures (monolithic, microservices(Azure Service Fabric))
- Creating solutions using cloud approach (Azure Search, Azure Functions, Azure WebJobs)
- Development of web applications(ASP.NET MVC, Angular SPA)
- Searching and using best approaches to meet business needs
Full-Stack Software Engineer Feb 2019 to July 2020
2nd company – Kiev, Ukraine
Full-Stack development and supporting company products.
Responsibilities:
- Architecture design and development of in-house Back-End and Front-End frameworks for new versions of company products using .NET Core and Angular 6-7
- Development of internal DMP company interface(API + UI)
- Integration of new technologies into products of the company
- Creating Windows Services for data migration between MS SQL Server/ClickHouse/AeroSpike
- Supporting AngularJS and ASP.NET MVC products
Tech Lead, Co-owner August 2020 to February 2021
Healthcare startup
Responsibilities:
- Development, feature discovery, architecture design for application via React/Flask/MongoDB
- Management of the team of 5 people
- DevOps, supporting product infrastructure
- HR management of tech specialists
Middle .Net Developer August 2020 to September 2021
3rd company – remote, Kiev, Ukraine
Backend development and supporting company products. Mentorship of trainees, building API architecture for backend applications.
Responsibilities:
- Development and delivery of serverless applications in AWS
- Implementing new features in product microservices
- Supporting legacy API
- Mentorship of trainees, task management for trainee team
- Development and supporting frontend script for user behaviour tracking
.NET Developer September 2021 to Current
4th company – remote, Kiev, Ukraine
Backend development/software design of several microservices, integration of 3rd party partner.
Responsibilities:
- Integration of 3rd party APIs and webhooks of external provider
- Delivering features from design to production, improving cloud infrastructure if needed
- Supporting legacy solution/migration from monolithic to distributed architecture
- Catching up L1/L2 requests
- Tuning PostgreSQL
- Scrum Master responsibilities for ~6 months
- Finished Full-Stack software engineer internship successfully
- Implemented and used NuGet approach to integrate custom Microsoft Azure Application Insights
- Permanent developing of features that corresponds business needs
2nd company
- Create in-house Back-End framework for web applications
- Updated and refactored major part of products related to my domain
- Implement MVP of Facebook API integration
- Implementation of bunch of different features
Healthcare startup:
- Hired whole tech team of 1 Backend Dev, 4 Frontend Devs(partime)
- Build and setup CI/CD process for STAGE/PROD for monolyth application
- Delivered MVP to STAGE env
- Project failed because of disagreements between other co-owners
3rd company:
- Delivered bunch of new features, services and improvements to company product
- Successfull mentorship of .NET trainee
- Created and delivered frontend script for user behaviour tracking
- Developed and delivered AWS Lambda for sending SMS to users
4th company:
- Configured autovacuum settings to reduce cloud costs for PostgreSQL table with high number of INSERT/DELETE operations
- Delivered bunch of features/microservices from design stage to production
- Successfull migration of several tables from MS SQL to PostgreSQL
- Learning and becoming Scrum Master(spent ~6 months in this role), improving Scrum processes for product team
$4000 / mo
≈ $48000 / year net
.NET Software Engineer
Ukraine · Kyiv · 6 years of experience · Upper-Intermediate ·Published today
Ukraine · Kyiv · 6 years of experience · Upper-Intermediate ·Published today
- Implemented comprehensive business reporting dashboards
- Provided product consultancies to various software vendors
- Developed and designed database structure, microservices architecture and integration with multiple client ERP systems
- Designed an efficient data storage for purchase order data and related file content
$6400 / mo
≈ $76800 / year net
Ruby/Ruby on Rails Developer
Ukraine · Lviv · 5 years of experience · Upper-Intermediate ·Published today · In passive search
Ukraine · Lviv · 5 years of experience · Upper-Intermediate ·Published today · In passive search
$4500 / mo
≈ $54000 / year net
Ruby on Rails Developer
United Kingdom · 5 years of experience · Upper-Intermediate ·Published today · In passive search
United Kingdom · 5 years of experience · Upper-Intermediate ·Published today · In passive search
• Programming languages: Ruby, PHP, JavaScript, C#
• Frameworks and Libraries: Rails, Yii 2, Laravel, ReactJS, NextJS, ElectronJS, Svelte
• Technologies: Docker, RabbitMQ
• Database Management System: MySQL, PostgreSQL, Redis, Firebird
• Testing frameworks and tools: RSpec
• Version Control System: SVN, Git
• Operation Systems: Windows, Linux, macOS
• Other: html, css, haml, slim, Capistrano, Ansible, AWS, and other
Skills and Awards:
• 3D Engines: Unity;
• Agile: Agile Software Development Methodologies: KANBAN, SCRUM;
• CNCF: CNCF Container Runtime: Docker;
• Cloud & DevTestSecOps: Test Levels: Component / Integration Testing, Unit testing;
• Databases: SQL Databases: MySQL, PostgreSQL;
• Databases: Key-Value: Redis;
• Digital Marketing Systems: Content Platforms: Laravel 4 PHP Framework, Laravel 5 PHP Framework, Yii 2 (PHP Framework);
• E-Commerce Platforms: Opencart;
• Heroku: Technologies: Heroku;
• Integrated Development Environments: JetBrains PhpStorm, RubyMine;
• Integration Platforms: Message Bus: RabbitMQ;
• Microsoft: Office 365;
• Network technologies and services: Network protocols: REST;
• Scripting Languages: CSS Frameworks: Bootstrap CSS;
• Scripting Languages: JavaScript, Ruby;
• Scripting Languages: Ruby Frameworks: RubyOnRails;
• Scripting Languages: JS DOM: jQuery;
• Software Configuration Management Tools: Ansible;
• Software Quality Tools: Code Audit Tools: RuboCop.
Current project:
Feb-2023 – Current Time – Devabit
Customer: Healnow
Project: USA based Pharmacy Project under strong NDA
Team Size: Dev team: 7 members, QA team: 2 member, Project team: 25 members
Project Role: Full stack developer
Tasks performed:
Responsibilities
Developing new features and components
Creating new markup/design features
Deploying changes to server
Working in an agile environment
Writing tests
Optimization of old code
Speaking with the customer side team and scrum-master about new needed features.
Environment:
PostgreSQL, Firebird
Docker, Git, AWS
Ruby 2.7.6, Rails 6.1.7, PostgreSQL, Firebird, JavaScript, ReactJS, jQuery, HTML/CSS, AWS,
Next.js, Electron.js, Svelte