Senior/Principal Software Engineer (React, .NET) - OP01999

AI overview

Join a global team to modernize a legacy onboarding system for a Fortune 500 client, focusing on frontend development with React.js and collaborating closely with experienced engineers.

🟢 We’re expanding our team and opening new remote opportunities! Review the role expectations, share your resume in English, and our team will follow up shortly.

We invite a Senior Software Engineer with strong frontend expertise in React.js and some hands-on experience with C#/.NET to join our team. In this role, you’ll help build and evolve an on-demand client onboarding tool that allows merchants to sign up for and configure products through digital forms. You’ll focus primarily on frontend development within a full-stack environment, contributing to the modernization and internationalization of a legacy system.

🟩 What's in it for you:

  • Work with a Fortune 500 company with a worldwide presence and millions of customers
  • Help transform a legacy onboarding flow into a modern, self-service experience
  • Collaborate closely with US-based senior developers and core engineers in a tight-knit, highly experienced team

Is that you?

  • 7+ years as a Software Engineer, including 3+ years with React.js (preferably v18+)
  • Proficiency in TypeScript/JavaScript
  • Material-UI (MUI v5) expertise
  • Frontend feature development on legacy codebases
  • REST API integration and troubleshooting experience
  • State management skills (Context API, React Query)
  • Experience with modern build tools (Vite, Babel)
  • Unit testing experience (Jest, React Testing Library for frontend; NUnit for backend)
  • Git version control
  • CI/CD knowledge with Azure DevOps
  • Experience with Terraform for infrastructure as code
  • Experience with Azure cloud services (App Service, Functions, Service Bus, SQL Database, Application Insights)
  • Familiarity with security best practices (XSS, CSRF prevention)
  • Form validation and user input handling experience
  • Willingness to learn and work with C#/.NET
  • Clear, proactive communication and effective collaboration across teams
  • Scrum framework experience, including participation in Agile ceremonies
  • Upper-Intermediate+ English level for daily interaction with US-based teams
  • Flexibility, high visibility, and proactive communication on progress, challenges, and blockers
  • Strong ownership, accountability, and independent execution

Desirable:

  • Backend development experience with C#/.NET Core (preferably .NET 6+)
  • Knowledge of Entity Framework Core and database design
  • REST API development and design experience
  • Docker containerization skills
  • Experience with Snowflake
  • Familiarity with alternative cloud providers (AWS, GCP)
  • Experience working with US-based companies and clients

🧩Key responsibilities and your contribution

In this role, you’ll design and build frontend features, integrate with backend APIs, and collaborate across teams to modernize and maintain a legacy platform.

  • Develop frontend features that consume APIs from a partner team
  • Balance delivery needs with refactoring and maintenance of legacy code
  • Modernize the system to support internationalization
  • Perform occasional infrastructure and DevOps tasks, including managing Azure DevOps pipelines
  • Collaborate daily with US-based team members
  • Participate in Scrum ceremonies and Agile processes

🎾What’s it like working at Dev.Pro?

Dev.Pro is a global company that's been building great software since 2011. Our team values fairness, high standards, openness, and inclusivity for everyone — no matter your background


🌐 We are 99.9% remote — you can work from anywhere in the world
🌴 Get 30 paid days off per year to use however you like — vacations, holidays, or personal time
✔️ 5 paid sick days, up to 60 days of medical leave, and up to 6 paid days off per year for major family events like weddings, funerals, or the birth of a child
⚡️ Partially covered health insurance after the probation, plus a wellness bonus for gym memberships, sports nutrition, and similar needs after 6 months
💵 We pay in U.S. dollars and cover all approved overtime
📓 Join English lessons and Dev.Pro University programs, and take part in fun online activities and team-building events

Our next steps:

✅ Submit a CV in English — ✅ Intro call with a Recruiter — ✅ Internal interview — ✅ Client interview — ✅ Offer

Interested? Find out more:

📋How we work

💻 LinkedIn Page

📈 Our website

💻IG Page

Perks & Benefits Extracted with AI

  • Paid Time Off: 5 paid sick days, up to 60 days of medical leave, and up to 6 paid days off per year for major family events like weddings, funerals, or the birth of a child
  • Remote-Friendly: We are 99.9% remote — you can work from anywhere in the world

We are a US-based outsource software development company that has been delivering exceptional software experience to our clients since 2011, helping technology companies to become industry leaders. Over the past few years, we’ve been hiring specialists all over the world while our main development centers were in Ukraine. Now, we keep expanding and start growing our centers in different parts of the world. Dev.Pro is open to hire specialists from other countries as well as Ukrainians who live outside of Ukraine now. We stand with Ukraine and keep supporting our people by offering a friendly remote environment while adhering to the values of democracy, human rights, and state sovereignty. As a company of professionals, Dev.Pro offers challenging and interesting projects with world-leading clients, a modern technology stack, and career opportunities for both technical and non-technical specialists. We focus on what we value the most: Personal and professional development — get access to trainings, attend English classes with native speakers Openness and support — you can count on setup support and equipment A culture of growth — discover opportunities for yourself with the help of our Career Development Department, getting personal career plan and personality analysis

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