Senior Full-Stack Developer (React + .NET)

Revenue Grid is a product-based B2B SaaS company with Ukrainian roots and a global footprint. We build an AI-driven Revenue Intelligence Platform used by thousands of sales teams across the US and Europe to automate sales workflows and prevent revenue leaks.
As we continue to scale out our platform, we’re looking for a Senior Full-Stack Developer who can confidently own frontend tasks while deeply understanding backend architecture and product logic.
This role is ideal for a senior engineer who wants to influence the product, work across the full stack, and collaborate closely with Product and Engineering teams.

Why this role might be a great fit
You’ll work on a mature, growing B2B SaaS product with real users and real impact
You’ll own features end-to-end — from idea and design to implementation and release
Strong focus on backend development, with meaningful frontend involvement
Opportunity to influence architecture and technical decisions
Low bureaucracy, high ownership, and a culture of trust and accountability
A team that values clarity, proactivity, and engineering excellence

Your Responsibilities
Own frontend development (~30% of the workload), while contributing to backend development (~70%) to ensure well-designed, scalable, and product-oriented features
Work on integrations with external services and APIs
Collaborate closely with Product, Design, and Architecture teams
Continuously improve performance, stability, and code quality across the system
Own features throughout the full product lifecycle — from concept to release and support

Requirements
Advanced Gen AI tools adoption
Strong experience with TypeScript
Solid knowledge of React and state management solutions (e.g. Redux) and RxJS
Experience working with HTML5, CSS3
Experience with modern frontend tooling and build systems: Vite / Webpack / esbuild; npm / yarn / pnpm; linting, formatting, and code quality tools
Strong backend expertise with modern versions of .NET
Proficiency in C#, ASP.NET, WebAPI
Experience applying IoC / DI principles
Hands-on experience with Entity Framework
Strong SQL skills (MS SQL)
Experience in designing and consuming RESTful services
Experience deploying and running applications on Kubernetes
Understanding of containerization (Docker)
Experience with Microsoft Azure
Ability to work across frontend and backend, owning features end-to-end
Product-oriented mindset and strong problem-solving skills
English at intermediate+ level for daily communication

Nice to have
Hands-on experience with Office 365 / Microsoft Graph API
Experience working with Microsoft Exchange, including Exchange Web Services (EWS)
Experience developing Chrome Extensions
Familiarity with WebRTC APIs / protocols
Background in CRM, ERP, or B2B SaaS products
Experience working with complex, long-living enterprise systems
Understanding of scalability, performance optimization, and system design

What you get
Remote-first work model — from anywhere in Europe
Contract via Ukrainian FOP or standard B2B
A global product with tens of thousands of active users
Skilled teammates who value your input and expertise
Unlimited vacation policy — we trust responsible adults
Stability, transparency, and long-term collaboration
If you’re looking for a senior full-stack role with real product impact, we’d love to hear from you. Join us in building the future of AI-driven revenue intelligence.