[WAP] Full-Stack Developer (React, .Net)

Software Mind; Województwo mazowieckie; Remoto; PLN 180.000 - 240.000; Tempo integral

Resumo da vaga

Software Mind is building a next-generation risk analysis UI using React and TypeScript. You will contribute to risk analyst interfaces, optimize large data visuals, and integrate with .NET backend services in a privacy-focused PCI-compliant environment.

You will work with AI-assisted coding tools daily, write comprehensive tests, and collaborate closely with the client's team across CI/CD practices in a remote-friendly setup.

Qualificações

• 3-5 years of commercial software development including 3+ years React/TypeScript.
• Experience building data-heavy UIs with tables, grids and charts.
• Proficiency in C#/NET: ASP.NET Core Web API, EF Core or Dapper, SQL basics.
• REST API integration with typed clients and server-state libraries.
• Daily use of agentic AI coding tools and testing frameworks (Jest/Vitest, Playwright/Cypress).
• Solid frontend fundamentals: CSS, accessibility, security.
• Docker, Git, CI/CD (Azure DevOps or GitHub Actions).

Responsabilidades

• Build and ship production React and TypeScript features for risk analyst interfaces.
• Extend the C#/NET endpoints behind your features within API contracts.
• Integrate the front end with platform APIs and handle loading states.
• Keep large datasets fast with virtualized tables and smart data fetching.
• Write tests (unit, component, integration, E2E) and review AI-generated code.
• Respect PCI boundary with masked/tokenized data and secure sessions.
• Collaborate with the client's internal team via stand-ups and CI/CD.

Conhecimentos

React

TypeScript

C#

SQL

REST API

Testing

Frontend fundamentals

CI/CD

Ferramentas

TanStack Table

AG Grid

Recharts

ECharts

Jest

Vitest

Playwright

Cypress

xUnit

NUnit

Docker

Git

Azure DevOps

GitHub Actions

Descrição da vaga

Software Mind develops solutions that make an impact for companies around the globe. Tech giants & unicorns, transformative projects, emerging technologies and limitless opportunities - these are a few words that describe an average day for us. Building cross-functional engineering teams that take ownership and crave more means we're always on the lookout for talented people who bring passion and creativity to every project. Our culture embraces openness, acts with respect, shows grit & guts and combines cooperation with enjoyment.

Project – the aim you'll have

Join a next-generation risk analysis and scoring platform built for a payments technology company. The platform combines the client's own risk rules with AI-driven, pre-scored risk feeds from a global card network. You'll build the analyst-facing interfaces where risk teams review transactions and merchants and work their alert queues, in a small AI-first delivery team alongside a backend-leaning senior developer.

Role – how you'll contribute

• Build and ship production React and TypeScript features for risk analyst interfaces: transaction and merchant risk views, score explanations, alert queues, data-heavy tables, filters and charts
• Extend the C#/NET endpoints behind your features (new fields, filters, endpoints) within API contracts owned by the senior developer
• Integrate the front end with platform APIs, handling loading, error, pagination and caching states cleanly
• Keep large-dataset UIs fast through virtualized tables, smart data fetching, memoization and regular profiling
• Use Claude Code or an equivalent agentic coding tool as your primary accelerator while owning the quality of every line merged
• Write unit, component, integration and end-to-end tests, and review and harden AI-generated code before it reaches production
• Respect the PCI boundary across the stack: masked and tokenized card data only, secure session and token handling
• Work closely with the client's internal team: stand-ups, documented design decisions, clean handoffs, CI/CD and repo conventions

Expectations – the experience you need

• 3-5 years of commercial software development, including at least 3 years of production React and TypeScript (hooks, state management, Vite or Next.js)
• Experience building data-heavy UIs: tables, grids and charts over large datasets (e.g. TanStack Table, AG Grid, Recharts, ECharts)
• Working proficiency in C#/NET: ASP.NET Core Web API, EF Core or Dapper, and enough SQL to change endpoints safely
• REST API integration with typed clients and server-state libraries such as TanStack Query
• Daily, hands-on use of agentic AI coding tools (Claude Code, Cursor, Copilot Workspace, Codex or similar) - you'll demo your workflow live
• Testing discipline: Jest or Vitest, React Testing Library, Playwright or Cypress, xUnit or NUnit
• Solid frontend fundamentals: modern CSS, accessibility (WCAG), browser performance and web security (XSS, CSP, token handling)
• Docker and Docker Compose, Git, CI/CD (Azure DevOps, GitHub Actions or similar)

Additional skills – the edge you have

• Payments, card processing, risk/fraud or financial services experience, ideally with PCI-scoped applications
• Design systems and component libraries (MUI, Fluent UI) and Storybook
• Advanced data visualization (D3, time-series and distribution charts) or UIs for LLM-backed features
• Identity in SPAs: OAuth2/OIDC, MSAL / Microsoft Entra ID
• Prior consulting or staff-augmentation experience embedded in a client team

What we offer:

• Flexible and remote cooperation options
• International projects with leading global clients
• Travels related to international projects
• Non-corporate atmosphere
• Access* to language classes
• Access* to knowledge-sharing initiatives
• Access* to private healthcare and life insurance
• Access* to multisport card

*The availability and terms of individual benefits may vary depending on the chosen form of cooperation.