April 28, 2026
Senior Full Stack Developer
Senior • Remote
New York, NY
A rapidly-growing AI Consumer Intelligence Platform is hiring a remote Full Stack Developer
Our platform synthesizes massive-scale data (billions of Google searches, social conversations, product reviews, and videos) to deliver actionable consumer insights for clients such as Coca-Cola, Unilever, and Bayer.
We are hiring a Full Stack Developer to lead the technical implementation of this dashboard platform. You will work to architect, build, and deploy the application, making key technical decisions and establishing patterns that the broader team will follow.
Role Overview
This role requires someone who can work independently with minimal oversight, has deep expertise in React, Python/FastAPI, and .NET and has hands-on production experience with Auth0, Kubernetes, Azure Key Vault, and Azure DevOps. You should be comfortable owning the full stack from database queries to UI polish.
You are obsessed with building dashboards that help users quickly reach the "aha" moment, the insight that changes their business. You understand that great analytics tools require both powerful backends and intuitive, fast front-ends.
Key Responsibilities
Architecture & Technical Leadership
• Architect the end-to-end solution, including frontend component structure, API design, data access patterns, and deployment topology.
• Make technical decisions on frameworks, libraries, and patterns; document architectural decisions for the team.
• Design a multi-tenant architecture supporting customer-specific configurations, including product line and country segments.
• Establish coding standards, review processes, and best practices for the project.
Backend Development - Python/API (Primary), .NET (Secondary)
• Build high-performance RESTful APIs using Python and FastAPI as the primary backend framework to serve analytics data to the React frontend.
• Support and maintain secondary backend services using .NET / ASP . net Core where appropriate.
- Implement efficient data access layers connecting to Databricks (via API's), SQL Server, and PostgreSQL.
• Design and implement caching strategies using Redis and in-memory caching to optimize response times for data-heavy queries.
• Build background services for report generation, data refresh, and scheduled tasks using Python workers, task queues, scheduled jobs, or .NET hosted services where applicable.
• Implement comprehensive logging, health checks, and observability using Azure Monitor and Application Insights.
Frontend Development - React
• Build a modern, responsive React application with TypeScript, implementing interactive dashboards and data visualizations.
• Develop reusable component library with consistent styling using TailwindCSS or styled-components.
• Implement complex data visualizations using Superset or other charting libraries such as Recharts, Chart.js, D3.js, or Apache ECharts.
• Optimize frontend performance for large datasets including virtualization, lazy loading, and efficient state management.
• Integrate Auth0 SDK for frontend authentication flows, token management, and protected routes.
Authentication, Authorization & Security
• Utilize end-to-end authentication using Auth0, including SSO, MFA, and social login configurations.
• Design and implement role-based access control using Auth0 roles and permissions mapped to application features.
• Integrate Azure Key Vault for secure storage and retrieval of secrets, API keys, connection strings, and certificates.
• Implement secure API authentication using JWT tokens with proper validation and refresh mechanisms.
• Ensure compliance with security best practices, including OWASP guidelines, data encryption, and audit logging.
DevOps, Infrastructure & Deployment
• Work with DevOps to design and implement Kubernetes deployments on Azure Kubernetes Service, including pod configurations, services, ingress, and horizontal pod autoscaling.
• Work with DevOps to build comprehensive CI/CD pipelines for automated build, test, and deployment across dev, staging, and production environments.
• Create and maintain Docker containers for both frontend and backend applications with optimized, multi-stage builds.
• Work with DevOps to implement infrastructure as code using Terraform or ARM templates for reproducible deployments.
• Configure environment-specific settings, feature flags, and deployment slots for zero-downtime releases.
• Set up monitoring, alerting, and dashboards using Azure Monitor, Application Insights, and Log Analytics.
Required Qualifications
- 7-10+ years in full stack development
- Python/FastAPI: 5+ years of backend development with Python, including production experience building APIs with FastAPI
- .NET / C#: Experience with ASP .net Core, Entity Framework, and Web APIs. Secondary backend experience preferred.
- React / TypeScript: 4+ years building production React applications
- Auth0: 2+ years implementing Auth0 in production, including SSO, RBAC, and MFA
- Kubernetes: 2+ years deploying and managing apps on Kubernetes/AKS
- Azure Key Vault: Production experience integrating Key Vault for secrets management
- Azure DevOps: 2+ years building CI/CD pipelines in Azure DevOps
- Databases: Strong SQL skills with SQL Server and/or PostgreSQL
- Docker: Proficient in containerizing Python/FastAPI, .NET, and React applications
Technical Skills
Backend - Python / FastAPI
• Python backend development with FastAPI
• RESTful API design and implementation
• Pydantic models and validation
• Dependency injection and middleware patterns in FastAPI
• Async programming and performance optimization
• SQLAlchemy, SQLModel, or equivalent ORM/data access libraries
• Integration with SQL Server, PostgreSQL, and Databricks APIs
• Background jobs using Celery, Redis Queue, APScheduler, Azure Functions, or similar tools
• API documentation using OpenAPI/Swagger
• Unit and integration testing with pytest or similar frameworks
Secondary Backend - .NET Core
• ASP.NET Core Web APIs with dependency injection, middleware, and filters
• Entity Framework Core and/or Dapper for data access
• Background services using IHostedService or Hangfire
• API documentation with OpenAPI/Swagger
• Unit testing with xUnit, Moq, and integration testing patterns
Frontend (React)
• React 18+ with hooks, context, and functional components
• TypeScript for type-safe development
• State management with Redux Toolkit, Zustand, or React Query
• Data visualization libraries, including Superset or other options such as Recharts, Chart.js, D3.js, or ECharts
• CSS frameworks, preferably TailwindCSS, or CSS-in-JS solutions
• Testing with Jest, React Testing Library, and Cypress
Auth0 Expertise
• Auth0 tenant configuration and application setup
• Universal Login customization and branding
• Auth0 Rules, Actions, and Hooks for custom logic
• Role-Based Access Control implementation
• Machine-to-machine authentication for backend services
• Auth0 SDK integration with Python/FastAPI, .NET, and React
Kubernetes & Azure
• Kubernetes concepts: Deployments, Services, ConfigMaps, Secrets, Ingress
• Azure Kubernetes Service provisioning and management
• Helm charts for application packaging
• Azure Key Vault integration with AKS using CSI driver or pod identity
• Azure DevOps YAML pipelines for build and release
• Infrastructure as Code using Terraform or ARM templates)
Preferred Qualifications
• Experience with Databricks or Spark for big data integration
• Experience integrating LLM/GenAI services, including OpenAI or Azure OpenAI, into applications
• Power BI embedded analytics or Apache Superset experience
• GraphQL experience, both server and client
• Background in consumer insights, CPG, or market research data domains
• Experience building multi-tenant SaaS applications
• Azure certifications such as AZ-204, AZ-400, or AKS specialty
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Warsaw, Poland
900 - 1,150 PLN
🏢 Summary: Senior Full Stack Developer role focused on building scalable, cloud-native applications using React and C# .NET Core within capital markets risk domains. The position involves developing microservices, REST APIs, data pipelines with Python (pyspark), and enterprise Power BI solutions. Strong emphasis on event-driven architectures, CI/CD automation, and Azure-based cloud environments. 🗂️ Requirements: 10+ years software development experience, Strong proficiency in React.js and JavaScript/TypeScript, Expertise in C# and .NET Core, Experience building REST APIs and microservices, Hands-on experience with Python and pyspark, Extensive Power BI development experience, Strong knowledge of microservices and event-driven architectures, Experience with CI/CD pipelines, Experience with Azure or AWS, Proficiency in SQL databases, Experience with Docker and Kubernetes, Understanding of credit risk and market risk domains 📃 Skills: React, JavaScript, TypeScript, Redux, C#, .NET, Python, pyspark, PowerBI, DAX, SQL, SQLServer, PostgreSQL, Docker, Kubernetes, Azure, AWS, Kafka, EventHub, Jenkins, GitHub, AzureDevOps, REST, Microservices 🏢 Description: About the Role We are seeking a highly experienced Senior Full Stack Developer with deep expertise in React on the frontend and C# .NET Core on the backend. The ideal candidate will have substantial hands-on experience developing scalable applications, strong exposure to cloud-native architectures, and a solid understanding of capital markets—particularly in credit risk and market risk domains. Experience with Python (pyspark) for data-driven workflows and a strong command of CI/CD, microservices, and event-driven architectures is essential. ________________________________________ Key Responsibilities Design, develop, and maintain full stack applications using React, C#.NET Core, and supporting technologies. Build high-performance backend services, RESTful APIs, and microservices with focus on scalability, maintainability, and resilience. Develop responsive, modular, and accessible UI components using React and modern JS/TS patterns. Collaborate closely with business stakeholders and risk domain experts to deliver solutions in credit risk, market risk, and related capital markets functions. Work with Python (pyspark) for data transformation, data pipelines, and analytics workflows. Develop, optimize, and maintain Power BI dashboards, data models, and analytical reports for business users. Implement and optimize CI/CD pipelines, ensuring robust automated testing, deployment, and monitoring. Architect and contribute to event-driven and distributed system designs using technologies such as Kafka, Event Hub, or similar. Drive engineering best practices: code reviews, unit/integration testing, performance tuning, documentation. Contribute to cloud migration and modernization initiatives, especially in Azure or AWS environments. Mentor junior developers and collaborate within a cross-functional agile team. ________________________________________ Required Skills & Experience Technical Skills 10+ years of professional software development experience. Front-end: Strong proficiency in React.js, JavaScript/TypeScript, Redux/RTK, hooks, and modern UI patterns. Back-end: Expertise in C# .NET Core, C#, REST APIs, Web APIs, and microservices-based development. Python (pyspark): Hands-on experience with distributed data processing, data pipelines, and analytic transformations. Power BI: Extensive experience developing dashboards, data models, DAX calculations, and enterprise-grade BI solutions. Strong understanding of data modeling, performance tuning, and governance in Power BI. Architecture: Strong knowledge of microservices, API design, event-driven architectures, and distributed systems. DevOps / CI/CD: Experience with Azure DevOps, GitHub Actions, Jenkins, or similar. Strong understanding of automated builds, testing, deployment, and monitoring. Cloud Platforms: Experience with Azure or AWS (Azure preferred). Databases: Proficiency with SQL Server, PostgreSQL, or other relational databases; NoSQL knowledge a plus. Containerization: Experience with Docker, Kubernetes, container orchestration. Domain Knowledge Understanding of capital markets, specifically: Credit risk (PD, LGD, EAD, credit exposure modeling, counterparty risk). Market risk (VaR, sensitivities, stress testing, pricing concepts). Familiarity with regulatory frameworks (e.g., Basel, FRTB, IFRS9) is a strong advantage. ________________________________________ Soft Skills Strong analytical and problem solving abilities. Excellent communication skills and ability to interact with technical and non-technical stakeholders. Collaborative, agile mindset with experience in Scrum/Agile environments. Ability to work independently and lead technical solutions end to end.
Technology
TimeShark LLC
Fullstack Software Engineer
Senior
Remote
Warsaw, Poland
5,500 - 9,000 USD
🏢 Summary: Senior Full Stack Developer role focused on owning and scaling a customer-facing dashboard and its underlying systems. The position covers end-to-end development across React frontend and Node.js backend, with responsibility for architecture, APIs, databases, and security. It also emphasizes AI-assisted development and driving high-quality, rapid code delivery. 🗂️ Requirements: Senior-level full stack development experience, Strong React frontend development experience, Strong Node.js backend development experience, Experience building RESTful APIs, Experience building GraphQL APIs, Experience with SQL databases, Experience with NoSQL databases, Experience with authentication and authorization implementation, Experience designing secure applications, Experience with AI-assisted development tools 📃 Skills: React, Node.js, REST, GraphQL, SQL, NoSQL, APIs, Authentication, Authorization, Security, Claude, Codex 🏢 Description: We are seeking a Senior Full Stack Developer who thrives in fast-paced environments and takes full ownership of product experiences. This role is central to building and scaling our customer-facing dashboard and the systems behind it, while driving a culture of rapid, high-quality code delivery powered by modern AI tools. Own end-to-end development of the customer-facing dashboard, including both frontend (React) and backend services Design, build, and maintain scalable full-stack applications using modern best practices Lead frontend development with React, delivering production-ready, high-performance interfaces Architect and implement backend systems using Node.js Develop and maintain APIs using both RESTful and GraphQL approaches Design and manage data models across SQL and NoSQL databases Take full responsibility for application security, including best practices in authentication, authorization, and data protection Build and evolve AI-assisted development workflows (e.g., Claude, Codex) to enable faster, more efficient code shipping Drive and instill a culture of rapid, high-quality delivery across the team, including mentoring current and new hires Collaborate with cross-functional teams to define, design, and ship new features
Technology
Remodevs
Senior Java Developer
Senior
Hybrid
Warsaw, Poland
5,900 - 6,200 USD
🏢 Summary: Backend-focused Full Stack Developer role centered on designing and building scalable, secure Java-based applications within an Agile environment. The position emphasizes backend development with Spring Boot and microservices, while contributing to CI/CD, cloud deployments, and optionally modern React-based frontend components. You will develop high-performing systems, integrate APIs, and ensure code quality through testing and best practices. 🗂️ Requirements: 5+ years experience as Java Backend or Full Stack Developer, Strong proficiency in Java, Experience with Spring Boot, Hibernate, JPA, Experience building REST APIs and microservices, Knowledge of OAuth2 and JWT authentication, Experience with SQL and NoSQL databases, Experience with CI/CD pipelines, Experience with Docker and Kubernetes, Experience with AWS, Azure or GCP, Bachelor’s or Master’s degree in Computer Science or related field, Experience working in Agile teams 📃 Skills: Java, Spring, SpringBoot, Hibernate, JPA, REST, Microservices, OAuth2, JWT, PostgreSQL, MySQL, MongoDB, Redis, Jenkins, GitHubActions, GitLab, Docker, Kubernetes, AWS, Azure, GCP, React, Redux, TypeScript, HTML5, CSS3 🏢 Description: Overview We are a company leveraging AI to optimize business operations. Our mission is to provide digital solutions and consulting services that help companies grow and create value. By using modern technology, we simplify processes, increase efficiency, and discover new revenue opportunities—especially in private capital markets. Our ecosystem includes: PaaS (Platform as a Service): A core platform that enhances workflows, provides actionable insights, and supports value creation. SaaS (Software as a Service): A cloud platform offering robust performance and intelligent tools at scale. S&C (Solutions & Consulting): Flexible tools and methodologies to manage, grow, and improve company performance. With over 10 years of experience working with fast-growing companies and private equity businesses, we know how to harness technology to deliver tangible business advantages. Job Description We are looking for a Backend-Focused Full Stack Developer with strong Java expertise. While your main focus will be backend systems, experience with modern frontend technologies (React.js, TypeScript) is a valuable plus. You will join an Agile team to design, build, and maintain scalable, secure, and high-performing applications. Key Responsibilities Backend Development (Primary Focus) Develop and maintain REST APIs and microservices using Java (Spring Boot, Hibernate, JPA). Implement secure authentication, authorization, and data handling mechanisms. Design and optimize databases (PostgreSQL, MySQL, MongoDB) for performance and reliability. Integrate with third-party APIs, cloud services, and internal systems. Participate in deployment pipelines using CI/CD tools (Jenkins, GitHub Actions, GitLab CI/CD) and containerization (Docker, Kubernetes). Frontend Development (Nice-to-Have) Build responsive UI components using React.js, Redux, and modern JavaScript/TypeScript. Apply best practices in UI/UX design, performance optimization, and cross-browser compatibility. Work with UI frameworks like Material-UI, Bootstrap, or Tailwind CSS. Code Quality & Testing Write clean, maintainable, and well-documented code. Create unit and integration tests for backend services, and frontend components if applicable. Collaboration & Agile Development Collaborate with designers, product managers, and DevOps engineers. Participate in Agile/Scrum ceremonies and contribute to process improvement initiatives. Required Skills & Experience Backend Strong proficiency in Java , Spring Boot, Hibernate, JPA, and REST API development. Experience with microservices architecture and API Gateway. Knowledge of authentication/authorization protocols: OAuth2, JWT, sessions. Frontend (Optional / Nice-to-Have) Experience with React.js, Redux, TypeScript, HTML5, CSS3, and modern JavaScript. Understanding of state management and component-based design. Familiarity with UI libraries/frameworks: Material-UI, Bootstrap, or Tailwind CSS. Database & DevOps SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis). CI/CD pipelines (Jenkins, GitHub Actions, GitLab CI/CD). Cloud platform experience (AWS, Azure, GCP) and containerization (Docker/Kubernetes). Qualifications Bachelor’s or Master’s degree in Computer Science, Engineering, or related field. 5+ years of experience as a Full Stack or Backend Developer (Java-focused). Experience working in Agile teams. Strong problem-solving and analytical skills. Soft Skills Excellent communication and teamwork abilities. Ability to manage multiple tasks in a fast-paced environment. Eagerness to learn new technologies and improve processes.
Technology
DataArt
Full Stack Developer with React and C#, Web Platform
Mid
Remote
Wroclaw, Poland
15,000 - 19,500 PLN
🏢 Summary: Full Stack Developer role focused on building and evolving a modern web application platform with complex workflows and data-driven features. The position involves developing and maintaining both frontend and backend components, ensuring scalability, performance, and reliability. You will collaborate within a cross-functional team to deliver iterative improvements using modern development practices and AI-assisted tools. 🗂️ Requirements: Experience in full stack web application development, Hands-on experience with React, Experience with C# and .NET or comparable backend technologies, Practical experience with SQL-based databases and writing queries, Experience using AI-assisted development tools (e.g., Claude, Cursor), Solid understanding of Git and version control workflows, Ability to work with and extend existing codebases 📃 Skills: React, TypeScript, C#, .NET, SQL, Git, REST, Claude, Cursor 🏢 Description: Project overview The project is a web based application platform designed to support complex user workflows and data driven features. It focuses on performance, maintainability, and iterative delivery of new capabilities. Team You will be part of a cross functional development team consisting of full stack developers, frontend specialists, backend engineers, and QA engineers. The team works collaboratively, reviews code regularly, and follows shared development standards and branching practices. Position overview We are looking for a Full Stack Developer to contribute to the development and evolution of a modern web application platform. You will work on both frontend and backend components, focusing on building reliable, scalable features and improving existing functionality. The role combines hands on development with close collaboration across engineering and product roles. Technology stack React, TypeScript, C#, .NET, SQL based databases, Git, REST APIs, AI assisted development tools such as Claude and Cursor Responsibilities Develop and maintain frontend features using React and related technologies Build and support backend services using C# and .NET Collaborate with team members on feature design, implementation, and code reviews Work with SQL based databases to design, query, and optimize data storage Use AI assisted development tools to improve development efficiency and code quality Follow established Git workflows and branching strategies Participate in troubleshooting, debugging, and performance improvements Requirements Experience building web application platforms in a full stack role Hands on experience with React for frontend development Experience with C# and .NET or comparable backend technologies Understanding of SQL based databases and practical experience writing queries Experience using AI tools to support software development, including Claude or Cursor Solid understanding of Git, version control, and common branching flows Ability to work with existing codebases and contribute to ongoing development Nice to have Experience with cloud based environments Familiarity with CI CD pipelines Experience working on large scale or long term web platforms Exposure to performance optimization and application monitoring What We Offer: Vacation days : Up to 26 business days per year. 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types Health and life insurance (Luxmed) MyBenefit platform with Multisport option Internal psychological support service English language classes from the first working day Access to external learning platforms : O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training Flexible workplace : work from the office, from home, or choose a hybrid option Tech Skills Mentoring Program Opportunities to develop as a public speaker, mentor, or technical interviewer Fully paid idle (bench) when not involved in a project Certification reimbursement (AWS, GCP, Microsoft, etc.)
Technology
Andersen
Full Stack Developer (.NET + Angular)
Senior
Remote
Warsaw, Poland
4,000 - 4,700 USD
🏢 Summary: Full Stack Developer (.NET + Angular) role focused on building a cloud-based risk intelligence platform using Azure services. The position involves developing RESTful APIs, integrating data platforms, and supporting AI/ML-driven pipelines to deliver scalable, high-performance SaaS solutions. Work includes full-stack development, system architecture contribution, and cloud-native implementation. 🗂️ Requirements: 5+ years full-stack development experience, Strong backend development with C# and .NET Core / ASP.NET, Experience building RESTful APIs and services, Frontend development experience with Angular, Experience with Azure cloud services, Integration with Azure Data Lake, Azure SQL, Cosmos DB, Working with JSON and XML data formats, Experience with test frameworks for REST services, Knowledge of OOP, design patterns, SOLID principles, Experience with CI and version control systems, Experience implementing IaC practices 📃 Skills: C#, .NET, ASP.NET, Angular, Azure, REST, JSON, XML, CosmosDB, AzureSQL, DataLake, AzureML, CI, IaC, OOP, SOLID, Git 🏢 Description: Andersen is hiring a Full Stack Developer (.NET + Angular) for a project building a risk intelligence platform, enabling data-driven insights and improved decision-making. The customer is a global organization operating in the professional services domain. It provides a range of advisory and analytical support to organizations across multiple industries, helping them improve business performance and address complex operational challenges. The company leverages data, industry knowledge, and digital tools to deliver practical solutions, supporting decision-making, organizational development, and long-term efficiency. The project is focused on developing a digital platform that supports risk intelligence and resilience decision-making. It leverages data, analytics, and modeling to help organizations assess risk exposure and improve operational performance. Responsibilities: Designing and implementing APIs and backend services for accessing, processing, and exposing analytical and ML-driven data. Building integration layers between data platforms (Azure Data Lake, Azure SQL, Cosmos DB) and applications. Implementing data ingestion, transformation, and orchestration workflows in collaboration with data teams. Working with semi-structured data (JSON) and integrating it into scalable backend services. Supporting AI-driven pipelines and integrating outputs from Azure ML and similar services. Ensuring performance, scalability, and reliability of services in line with SLAs. Integrating backend components within the Azure ecosystem (Functions, Storage, messaging). Contributing to system architecture, especially service boundaries between data and application layers. Writing clean, maintainable, and testable code, including unit tests and automation. Collaborating with architects, data engineers, and frontend teams, and supporting backlog refinement with Product Owners. Conducting code reviews, debugging issues, and improving system performance. Developing PoCs and contributing to SaaS solution design using modern technologies. Implementing high-performance cloud solutions using Azure and IaC practices. Must-haves: Experience in full-stack development for 5+ years. Hands-on experience with backend development using C#, .NET Core / ASP.NET , building RESTful APIs and services. Experience in frontend development using Angular. Familiarity with JSON/XML and service integration patterns. Experience working with cloud technologies, specifically the Azure stack. Experience working with test frameworks/test cases for RESTful services. Experience with software engineering best practices: object-oriented, design patterns, SOLID principles. Experience with software development ecosystem (IDE’s, version control, test automation/CI, etc.). Strong appreciation of building flexible cross-functional full-stack squads with shift-left DevOps, SRE and QA culture. Level of English – from Upper-Intermediate and above. Reasons why this job would be interesting to you: Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc.. The opportunity to change the project and/or develop expertise in an interesting business domain. Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant. Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee. The opportunity to earn up to an additional 1,000 USD per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities. Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated. Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies). Certification compensation (AWS, PMP, etc). Referral program. English courses. Private health insurance and compensation for sports activities. Your personal data is protected in accordance with GDPR regulations. Learn more: https://andersenlab.com/privacy-policy/pl Join us!