Вакансії React Developer

A Backend Engineer who excels at programming and solving complex architectural challenges. The candidate must have solid AWS experience and some frontend knowledge. You will have to communicate effectively with the business team and make well-considered technical decisions regarding the development of real-time collaborative software.

About Project:

A project by the American company Scripto, founded in 2014 for collaboration scriptwriting platforms used by TV shows. It combines Google Docs' real-time flow with the professional writing and production formats used in TV, video games, and other media. Whether you're taping a show in a studio, collaborating on screenplays, or making a video game, Scripto helps you do your best work and save time while you do it.

What is the project’s technical stack:

• TypeScript/JavaScript;
• Node.js;
• ProseMirror;
• Express.js;
• Nest.js;
• ts-rest;
• PostgreSQL;
• Docker;
• AWS ECS;
• React;
• MobX-State-Tree;
• Mobx;
• Terraform.

What will you do:

• Design a scalable and reliable application, including AWS infrastructure.
• Develop new features with a strong focus on the backend.
• Impact on the product team decisions by providing tech expertise and estimations for the cost-benefit analysis.
• Conduct transformation of an existing product if necessary.
• Improve engineering standards, tooling, and processes.
• Fix bugs.

What should you be experienced with:

General experience:

• 10+ years of experience in web application development;
• 5+ years of experience in senior developer positions, solving hard and complex tech problems and making informed decisions on the architecture for features you created;
• At least upper-intermediate English;

Specific skills:

• Mastery of TypeScript in Node.js, i.e. backend typescript;
• Expert or advanced experience with protocols, streaming, sockets, in order of desirability:
  • Backend systems for socket-driven CRDTs or OT systems;
  • TypeScript over streams i.e. typed payloads over socket.io;
  • Other asynchronous architectures e.g. CQRS, or Eventsourcing;
  • Anything complex vs marketing or e-commerce sites with a simple REST architecture.
• Expert in Node.js - how to write async code in Node.js;
• Web telemetry reporting advanced expertise. Datadog monitoring will be a big plus;
• Expert or advanced experience with the following AWS services:
  • ECS/Fargate;
  • ELB;
  • Cloudwatch.
• Advanced user of Postgres:
  • SQL coding;
  • Schema design;
  • DBA/management: performance profiling, plugin architecture, general DBA.
• Partial proficiency in JavaScript - post es6 skills, looking for async mastery - promises, etc.;
• Partial proficiency in React;
• Partial proficiency in Chrome internals and dev tools;
• Terraform, especially for AWS will be nice to have icing on the cake.

What should your personal skills be:

• Effective Delegation – the ability to entrust tasks and responsibilities to team members, empowering them to leverage their strengths and skills while ensuring that objectives are achieved efficiently and effectively.
• Technical Curiosity – the desire to deeply understand how technologies, systems, and tools work beyond their basic functionality, driving you to explore, analyze, and learn the underlying principles and mechanics.
• Persuasive Reasoning – the ability to argue logically and patiently persuade other engineers of the correctness of your solution.
• Accountability – the demonstrated “no-nonsense” attitude to delivering excellence to customers.
• Critical Problem-Solving – the ability to think critically about challenges & design efficient & effective solutions.
• Integrity – keeping your commitments to the team, customers, and stakeholders.
• A strong work ethic.

Working hours and time overlap:

As long as the team is a mix of US and European developers, you will need to work late hours several days a week:
Normal Days (2 days a week):

• Working up to 18:00 EET (17:00 CET).
• Overlap with:
  • New York: 2 hours;
  • California: 1 hour.

Extended Days (3 days a week):

• Working up to 21:00 EET (20:00 CET)
• Overlap with:
  • New York: 5 hours;
  • California: 3 hours.

We are looking for a skilled .Net/React Engineer to join our team and contribute to a sophisticated multi-tenant Web Tool tailored for traders.

Project description: it is a sophisticated multi-tenant Web Tool designed for a group of users, primarily traders. The platform enables users to view, manage, and analyze trades conducted by end clients. Using it allows the creation of dummy trades to simulate risk and costs for them, and then match these dummy trades with the done exchange trades. The system is divided into three main modules and an Excel Add-In that provides supplementary functionality, making the project a comprehensive solution for trading professionals.

Technical stack: .NET 8, React.js 16, Redux, TypeScript, Antd, Devextreme, Entity Framework Core 8, SignalR, Hangfire, MySQL (main database), PostgreSQL (for saving time-series data of streamed live prices and whiteboard numbers actions), RabbitMQ (for communication between Windows Services and Web API), FIX protocol for working with trading platforms (consuming data from them), Azure services, Windows services, Terraform and Ansible.

What you’ll be doing:

• Develop and maintain the web application using .NET 8 and React.js 16;
• Collaborate with cross-functional teams to understand requirements and provide technical solutions;
• Implement state management using Redux and TypeScript;
• Design and develop user interfaces with Antd and Devextreme;
• Work on the backend using Entity Framework Core 8 and MySQL for the main database;
• Integrate PostgreSQL for saving time-series data of streamed live prices and whiteboard numbers actions;
• Set up and manage communication between Windows Services and Web API using RabbitMQ;
• Utilize FIX protocol to consume data from trading platforms;
• Implement background job processing using Hangfire;
• Ensure smooth integration and communication between all system components;
• Participate in code reviews, testing, and debugging to ensure high-quality code;
• Stay up-to-date with the latest industry trends and technologies.

What you’ll need:

• 5+ years of professional experience as a .Net Developer.
• Strong proficiency in React.js (version 16) and Redux.
• Experience with TypeScript for building robust web applications.
• Familiarity with Antd and Devextreme libraries.
• Proficient in using Entity Framework Core 8.
• Experience with MySQL and PostgreSQL databases.
• Knowledge of RabbitMQ for message broker services.
• Experience with SignalR.
• Understanding of the FIX protocol and its application in trading platforms.
• Experience with background job processing frameworks like Hangfire.
• Familiarity with Azure services, Terraform, and Ansible for deployment.
• Strong problem-solving skills and the ability to work independently.
• Excellent communication and collaboration skills.

Nice-to-have skills:

• Previous work in the finance or trading industry.
• Familiarity with Windows services and their management.
• Understanding of security best practices in web development.

You will work on experiences that reach millions of consumers worldwide and join a highly skilled, international team. This is an exciting opportunity to contribute to innovative applications that impact users in the Kids space, with a focus on delivering high-quality, scalable solutions.

Responsibilities:

• Build efficient, reusable applications using React Native (JavaScript, TypeScript).
• Collaborate with Product Managers, UX Designers, and other specialists to deliver both new functionality and iterative improvements to apps.
• Bring your curiosity to explore new technologies and methodologies, identifying opportunities to enhance and elevate our solutions.
• Actively contribute to team initiatives, knowledge-sharing, and communities to foster innovation and growth.
• Apply security and privacy best practices throughout the entire development lifecycle, from ideation to production and beyond.
• Ensure high-quality output while upholding company values and maintaining a focus on user experience.

Requirements:

• Solid experience with React Native development (JavaScript/TypeScript).
• Strong knowledge of optimizing front-end performance and ensuring cross-device compatibility.
• Proficient in optimizing accessibility within native apps to ensure an inclusive user experience.
• Experience with native app development for iOS or Android.

Nice to Have:

• Experience with consuming and providing APIs.
• A curiosity to explore new technologies and find innovative solutions.
• Familiarity with 3D technologies, such as Unity 3D, to enhance interactive and immersive experiences.

Requirements:

• 1+ year of experience in full-stack development with proficiency in Node.js (Express, NestJS) and React (including JSX/TSX, hooks, and context).
• Solid understanding of databases (PostgreSQL and MongoDB).
• Familiarity with state management using Redux (RTK)
• Experience in building responsive layouts and familiarity with REST APIs and WebSockets.
• Experience with Git for version control.
• Basic knowledge of cloud providers (AWS, GCP, Azure).
• Understanding of security best practices.
• Proficiency in TypeScript.
• Strong team collaboration skills.
• You have the ability to task juggle and a good sense of prioritizing.
• Intermediate or higher level of English for collaboration with international teams.

As a plus:

• Experience with Modern AI API implementation
• Blockchain integration (wallet connect, etc.)

A-LISTWARE is looking full-time for an experienced Strong Middle/Senior Full-Stack (React + Python) Developer

Our Customer:

Our client has created an advanced, interactive virtual care coordinator powered by AI. This care navigator can make thousands of highly personalized phone calls daily, revolutionizing remote care management and addressing the critical shortage of skilled nursing staff.

Required experience and skills:

• At least 4 years of professional experience in software development;
• 4+ year as a Frontend Developer (React);
• 2+ years of professional experience in backend development (Python);
• 2+ years of experience in applications utilizing relational databases as part of the overall application architecture (MySQL or Postgres);
• 2+ years of experience designing and defining architecture, including writing design reviews, and test plans as part of launching software products;
• Bachelor’s degree in computer science or equivalent;
• Good technical problem-solving skills;
• English – Upper-Intermediate.

Would be a plus:

• Experience in CI/CD processes;
• Experience with Cloud (AWS advantage);
• Experience with Redis, or similar frameworks – Advantage Web development – API, Flask, Fast API, ASYNC.IO;
• Experience with Microservices, Docker, Kubernetes.

Ми – українська продуктова IT-компанія Galaktica, яка створює і просуває свої власні онлайн продукти на найбільш платоспроможних ринках світу: США, Канада, Австралія, Велика Британія, ЄС.
Ми вже маємо суттєві здобутки, але продовжуємо далі активно розвиватись. У зв’язку з чим ми шукаємо Middle Full Stack Engineer, який приєднається до нашої молодої, активної і залученої команди!

Основний вектор роботи, з яким зіткнетесь:

• Займетесь розробкою маркетингових інструментів;
• Будете інтегрувати, підтримувати та моніторити маркетингові API;
• Розробите та будете підтримувати систему керування лендінгами.

За якими критеріями ви нам підходите:

• У вас комерційний досвід розробки на NodeJS від 3-х років;
• Ви чудово володієте JavaScript, MySQL, NestJS framework, TypeScript, NextJs;
• Ви створювали та проектували великі високонавантажені системи;
• Знаєте принципи SOLID та патернів проектування;
• Володієте комунікативними та аналітичними здібностями;
• Наявність досвіду роботи і готовність працювати з React.

Буде плюсом:

• Ви раніше працювали з Docker, Kubernetes, AWS, Unit tests та рефакторінгом.

We are looking for a Full Stack Developer to join our team, who will play a crucial role in the development and support of web projects on the React and Node.js frameworks for both internal and external clients. Your primary responsibility will be to create high-quality and highly functional web applications, ensuring they meet the needs and expectations of our clients. Collaborate closely with team members, including product managers and QA personnel, to collectively achieve team goals and ensure the successful and seamless delivery of projects.

Responsibilities:

• Implement new functionality for backend/frontend-based application based on Node.js runtime within frameworks and libraries.
• Integration of third-party services and support of existing ones.
• Provide accurate project estimates and validate the estimates of team members, contributing to effective project planning and execution.
• Actively engage in developing architecture, approaches etc.
• Conduct code reviews and share knowledge with the team.

Requirements:

• At least 5 years of experience in Node.js runtime, SQL/noSQL and cloud technologies;
• English B2+;
• Teamwork experience;
• Deep knowledge of the JavaScript/TypeScript languages;
• Working with layouts and styles based pre- and post CSS processors;
• Strong understanding of SPA functionality based on React.js library;
• Strong knowledge of data management systems like MobX, Redux or Context-based models and understanding the difference;
• Use of external libraries for data management, such as Redux-Toolkit, Redux-Persist Thunk, Reselect, etc.;
• Experience with Drag-n-Drop functionality (native or libraries like Beautiful-DnD);
• Experience developing Canvas functionality (native or libraries like fabric.js, konva.js);
• Work with chart libraries such as Chart.js, Recharts, ApexChart, etc.;
• Experience developing UI with Storybook framework, Prime-React, React-Bootstrap, MUI, AntD or similar.;
• Ability to compare different UI libraries;
• Use of different libraries for forms functionality such as Formic React-Form etc.;
• Use of the data request libraries like React-Query, Axios, Superagent, Got, Apollo, GraphQL on your projects.;
• Experience making pixel perfect CSS-layouts;
• Experience with React-Virtualized or React-window for optimization;
• Practical usage of Google-Analytics, Google-Insights or similar;
• Strong understanding of SSR techniques based on Next.js or Gatsby. Understanding the difference;
• Familiarity with serverless architecture;
• Knowledge of REST, gRPC, SOAP, GraphQL architectures;
• Familiarity with Docker, Docker compose etc.;
• An excellent knowledge of SOLID (SRP, OCP, LSP, ISP, DIP), DRY, SLAP, KISS;
• Familiarity with Agile methodologies, such as Scrum, Kanban;
• Experience with RDBMS like PostgreSQL, MySQL, MariaDB;
• Experience with noSQL like Redis, Memcached;
• Practical experience in basic CI/CD configuring;
• Strong knowledge of UNIX-based OS;
• Understanding features of Express, Koa, Nest, and their differences;
• Deep understanding of testing and experience in testing frameworks.

Nice to have:

• Experience with other frontend frameworks like Vue or Angular;
• Experience with languages other than the JS/TS;
• Reference from a previous employer;
• Share public links from the successful project you were engaged in;
• Experience with mentoring and training junior developers;
• Experience in developing open-source projects;
• Links to public profiles on GitHub, LinkedIn, Djinni, etc.

Devico is looking for a motivated and talented React Native Developer with commercial experience of at least 5 years to join to our team on a full-time basis.

About the Project:
We have developed an innovative platform designed to revolutionize healthcare accessibility. Our platform enables patients to effortlessly book doctor visits and access telemedicine services, bridging the gap between patients and healthcare providers. We are committed to making a meaningful impact on people's lives through cutting-edge technology, and we are looking for a Senior React Native Developer to help us elevate our platform to the next level.

Responsibilities:

• Lead the development and optimization of our mobile application using React Native for both iOS and Android platforms.
• Architect scalable and maintainable mobile solutions that integrate seamlessly with backend services.
• Collaborate with cross-functional teams (backend, design, product) to drive the technical roadmap and ensure cohesive development efforts.
• Mentor and provide guidance to junior developers, ensuring best coding practices are followed.
• Take ownership of the mobile application’s full development lifecycle, from design and architecture through to deployment and post-launch support.
• Identify performance bottlenecks, troubleshoot issues, and optimize the app for scalability and speed.
• Stay ahead of the latest developments in mobile technologies, recommending and implementing new tools and frameworks where appropriate.

Requirements:

• 5+ years of professional experience in mobile development, with at least 3 years in React Native.
• Expertise in JavaScript (ES6+), TypeScript, and mobile development best practices.
• Proven track record of designing and implementing mobile applications with a focus on performance, scalability, and reliability.
• Experience working with complex state management tools such as Redux, MobX, or Context API.
• Deep understanding of native mobile development (Android/iOS) and how React Native bridges native and JavaScript code.
• Strong experience with RESTful APIs and backend service integration.
• Familiarity with CI/CD processes for mobile app deployment.
• Experience in leading a team or mentoring other developers, with a strong focus on code quality and best practices.
• Excellent problem-solving skills and a proactive approach to finding solutions.
• Strong communication skills with the ability to collaborate effectively in a remote environment.

Nice to have:

• Experience in the healthcare or telemedicine industry.
• Familiarity with native Android (Java/Kotlin) or iOS (Swift/Objective-C) development.
• Knowledge of security best practices in mobile app development, particularly in handling sensitive data.
• Experience with automated testing frameworks like Jest, Detox, or Appium.
• Exposure to Agile/Scrum environments, with experience in managing sprint cycles and delivering on milestones.

Our engineering team is looking for talents to build React and React Native applications for start-ups from healthcare, fintech, and eCommerce domains.
Well-established development practices and modern technology stack provide a great growth opportunity and a convenient working environment.

What you'll be working on:

• Build web applications in React or mobile applications in React Native;
• Solve challenging tasks and contribute to internal knowledge base;
• Generating ideas for code improvement;
• Development of solutions from scratch according to the specification.

Experience that will help you to do the job:

• Good knowledge of Javascript (ES6+) and Typescript;
• Strong knowledge of React and/or React Native;
• Experience in working with either Redux or Apollo Client;
• Ability to deliver good quality code (clear code with the usage of best practices);
• Experience integrating with REST or GraphQL APIs;
• Experience with Git;
• English Intermediate or higher.

Experience that will be a plus:

• Experience with styled-components or other CSS-in-JS libraries;
• Experience with SSR and Next.js;
• Knowledge of backend technologies;
• Experience with CI/CD.