Senior Full-Stack Engineer

🏢 Summary: Senior Frontend Engineer role focused on building enterprise-grade AI-powered Next.js applications with complex state management, real-time features, and scalable frontend architecture. The position involves creating advanced AI interfaces, improving performance and accessibility, and contributing to design systems in a fully on-site Warsaw office environment. Candidates will work with modern AI development tools and enterprise-scale frontend technologies. 🗂️ Requirements: 5+ years of frontend development experience, 3+ years of React experience, Strong TypeScript skills, Production experience with Next.js, Knowledge of App Router, Knowledge of Server Components, Understanding of SSR, Understanding of SSG, Understanding of CSR, Experience with complex state management, Experience with real-time updates, Experience with optimistic UI, Experience with multi-tenant systems, Experience building AI or LLM interfaces, Knowledge of frontend performance optimization, Experience improving Core Web Vitals, Understanding of accessibility standards, Understanding of localization, Understanding of frontend security, Experience handling sensitive data, Experience using AI coding assistants, Strong communication skills, Ability to work fully on-site in Warsaw 📃 Skills: React, TypeScript, Next.js, SSR, SSG, CSR, AI, LLM, CoreWebVitals, Accessibility, Localization, Security, ReactFlow, Highcharts, Node.js, Python, RAG, OpenAI, Codex, GitHub, Copilot 🏢 Description: About us We believe that businesses are moving toward AI-powered work, and we are building a platform for this future. Many AI agents cannot handle complex business tasks. We created a platform that organizes company policies, workflows, and business knowledge into one AI data model. This helps AI agents make accurate decisions and deliver reliable results at scale. We already work with well-known enterprise customers such as Glovo, Nespresso, and HelloFresh. Our platform supports thousands of users and processes real production data. Customers trust us with important business knowledge because we provide a secure and reliable solution with SOC2, HIPAA-ready security practices, and strong integrations. Job description We are looking for a Senior Frontend Engineer who enjoys building high-quality user interfaces for enterprise AI products. In this role, you will design and build important frontend features, solve complex UI problems, and improve the user experience over time. You will take ownership of frontend architecture and help build production Next.js applications with complex state management, real-time AI features, and enterprise functionality. The position is based in Warsaw and requires working from the office. Responsibilities - Design and build production Next.js applications that support complex state, high traffic, and real-time AI features. - Create user interfaces for AI-powered tools, including streaming AI responses, semantic search, knowledge graphs, and AI agents. - Build and improve our component library and design system to keep the user experience consistent, accessible, and reusable. - Deliver enterprise features such as localization, accessibility, browser compatibility, and security. - Monitor applications after release, improve performance, reduce bundle size, track Core Web Vitals, and help systems scale. - Maintain high engineering standards through code reviews, testing, and mentoring other developers. Requirements - More than 5 years of frontend development experience, including at least 3 years working with React and modern TypeScript. - Strong experience building production applications with Next.js, including App Router, Server Components, and understanding SSR, SSG, and CSR. - Experience managing complex application state, including real-time updates, optimistic UI, multi-tenant systems, and large amounts of data. - Experience building AI or LLM-based interfaces such as chat applications, streaming responses, or semantic search. - Strong knowledge of frontend performance and experience improving Core Web Vitals in large applications. - Good understanding of accessibility, localization, security, and enterprise application standards. - A security-focused approach and experience working with sensitive data. - Strong product thinking and the ability to improve user experience without waiting for detailed designs. - Experience using AI coding assistants as part of your daily development work. - Good written and spoken communication skills and the ability to explain technical decisions clearly. Nice to have - Experience with React Flow, Highcharts, or other data visualization libraries. - Experience building vector search, RAG, generative AI, or semantic search interfaces. - Basic knowledge of Node.js or Python to understand backend code and APIs. - Experience contributing to design systems or open-source UI libraries. What we offer - B2B contract and company stock options. - MacBook Pro. - Modern technology stack and the opportunity to contribute to open-source projects. - An AI-focused development environment with tools such as Claude Code, OpenAI Codex, and GitHub Copilot. Our values - Quality – We care about excellent work and high standards in everything we build. - Momentum – We take initiative, share ideas, and keep moving forward. - Accountability – We take responsibility for our work and give honest, respectful feedback. - Hard work – We believe success comes from teamwork, dedication, and consistent effort. - Learning agility – We stay curious, learn from mistakes, and continue improving. - Adapt and thrive – We welcome change and see challenges as opportunities to grow. - Win together – We work as one team, communicate openly, and support our shared goals.

🏢 Summary: Senior Frontend React Developer role focused on building scalable Next.js applications that power enterprise AI interfaces, including chat, semantic search, and knowledge graph features. The position involves developing high-performance, real-time, and data-intensive user interfaces with strong emphasis on accessibility, security, and code quality. You will contribute to reusable design systems, performance optimization, and AI-assisted development in a modern tech stack. 🗂️ Requirements: 5+ years frontend development experience, 3+ years experience with React, Strong knowledge of JavaScript, Strong knowledge of TypeScript, Strong knowledge of Next.js including SSR, App Router, Server Components, Advanced TypeScript skills, Experience with modern CSS solutions (Tailwind CSS or CSS-in-JS), Experience with complex state management, Experience with real-time collaboration features, Experience building AI-related interfaces (chat, streaming, semantic search), Understanding of localization, Understanding of accessibility standards, Understanding of security standards, Experience with AI coding tools (OpenAI Codex or Claude), Upper-Intermediate (B2) English or higher 📃 Skills: React, Next.js, JavaScript, TypeScript, SSR, Tailwind, CSS-in-JS, SWR, WebSockets, ReactFlow, Highcharts, Storybook, Playwright, Node.js, Python, AWS, S3, CloudFront, Lambda, OpenAI, Claude, Codex, Copilot, Puppeteer, Cypress, Lerna, Turborepo, Nx, MCP, DSPy 🏢 Description: About Us Many companies want to use AI agents, but these tools often have problems with real business tasks. We create a platform that helps AI understand company rules, workflows, and processes, so it can give correct and reliable answers. Our technology is trusted by large international companies and works with leading AI and cloud platforms. Our goal is to help people find better answers and make better decisions with AI. Senior Frontend React Developer As a Frontend React Developer, you will build modern user interfaces that make enterprise AI easy to use and reliable. You will create Next.js applications that work with large amounts of data, real-time AI responses, and advanced business features. Your work will help thousands of users access important information quickly and confidently. What You Will Do Design and develop scalable Next.js SSR applications. Build interfaces for AI chat, semantic search, knowledge graphs, and AI builders. Create data visualizations using libraries such as React Flow and Highcharts. Develop multilingual, accessible, secure, and cross-browser compatible applications. Work with SWR for data fetching, caching, and real-time websocket updates. Build and maintain reusable UI components and a Storybook design system. Improve application performance, monitor Core Web Vitals, and write automated tests with Playwright. Use AI coding assistants to speed up development while keeping high code quality. Participate in code reviews, share knowledge, and support continuous learning within the team. Requirements At least 5 years of frontend development experience. More than 3 years of experience with React and JavaScript/TypeScript. Strong knowledge of Next.js, including SSR, App Router, and Server Components. Advanced TypeScript skills and experience with modern CSS solutions such as Tailwind CSS or CSS-in-JS. Experience building applications with complex state management, real-time collaboration, and high performance. Experience creating interfaces for AI features such as chat systems, streaming responses, or semantic search. Understanding of localization, accessibility, security standards, and writing maintainable code. Experience using AI coding tools such as OpenAI Codex or Claude. Upper-Intermediate (B2) or higher English communication skills. Nice to Have Experience with React Flow, Highcharts, or similar visualization libraries. Basic backend knowledge in Node.js or Python and experience discussing API design. Experience with vector search, RAG interfaces, or semantic search solutions. Familiarity with MCP, DSPy, or other AI frameworks. Experience with monorepo tools such as Lerna, Turborepo, or Nx. Knowledge of AWS services like S3, CloudFront, and Lambda. Experience with Playwright, Puppeteer, or Cypress. What We Offer B2B contract and company stock options. MacBook Pro for work. Modern technology stack and opportunities to contribute to open-source projects. Access to advanced AI development tools, including GitHub Copilot, Claude Code, OpenAI Codex, TypingMind, v0, MCP Servers, and credits for testing new AI technologies. Our Values We believe our success comes from the way we work together: Quality – We aim for excellent work and high standards in everything we do. Momentum – We take initiative and keep projects moving forward. Accountability – We take responsibility and give honest, respectful feedback. Hard Work – We solve difficult problems together and stay committed to our goals. Learning – We are curious, improve every day, and learn from mistakes. Adaptability – We accept change and see challenges as opportunities. Teamwork – We communicate openly, support each other, and succeed as one team.

🏢 Summary: Backend-focused software engineering role in the Digital Incentives team, developing and maintaining cloud-based APIs and applications used by millions of users globally. The position involves building and integrating RESTful and GraphQL services using TypeScript and NestJS on Google Cloud. You will contribute to digital campaign, couponing, and loyalty solutions within an agile environment. 🗂️ Requirements: 2+ years of experience in backend software development, Experience building backend services with NestJS, Fluency in systems design, Experience designing and developing RESTful APIs, Experience with application containerization, Knowledge of SQL and NoSQL databases, Experience working with cloud platforms, Bachelor’s degree in Computer Science or related field, Fluency in English 📃 Skills: TypeScript, NestJS, GCP, REST, GraphQL, SQL, NoSQL, Docker, CI/CD, GitHubActions, AWS, Azure, Agile, Scrum, SDLC 🏢 Description: As part of the Digital Incentives team , you will apply hands-on engineering skills to develop and maintain product capabilities used by millions of customers via multiple brand websites across the world. You will be building your backend API and frontend expertise using latest industry tools and cloud providers. Your team: As part of the Commercial Digital Products organization, you have the opportunity to impact how P&G touches the lives of our consumers through our Digital Platforms. You belong to a team called Digital Incentives that is responsible for development and maintenance of digital campaign, couponing, samples and loyalty solution. Based in Warsaw, our largest European IT hub, this is a global role meaning you will work in a geographically dispersed multicultural and diverse environment. In P&G, we form an agile, collaborative environment with a blameless culture. The team is composed of 3 people from Warsaw and 1 from Manila. How success looks like Develop features on time (based on sprint cycles) and with quality (based on engineering standards), Deliver proof of concepts with excellence based on success criteria defined, Produce technical documentation for developed components according to set criteria, Pursue opportunities for professional growth, applying new insights to enhance project outcomes and team practices Responsibilities of the role Develop and maintain software components using TypeScript, NestJS on Google Cloud to create cohesive applications, Implement RESTful and GraphQL APIs that integrate seamlessly with our applications, enhancing functionality and user experience, Contribute to the design and development of our Digital Incentives and Loyalty solutions, helping to drive customer engagement, Create and maintain clear technical documentation to support development processes and facilitate knowledge sharing within the team, Work closely with the P&G product team and external vendors to align technology solutions with business requirements and objectives, Uphold and promote best practices in the Software Development Life Cycle (SDLC), ensuring high standards of quality and efficiency in our engineering processes. Job Qualifications 2+ years of experience in IT software development , creating backend services preferably using NestJS Fluency in systems design Experience in RESTful API design and development Experience with application containerization Familiarity with database technologies, SQL and noSQL databases Problem solving skills and positive attitude towards challenges and change Strong self-leadership, teamwork, innovation and analytical skills English fluency, ability to effectively communicate in English both in speech and writing At least a bachelor’s degree in Computer Science, Computer/Systems Engineering, Software Development or related Nice to have Experience in maintenance and/or lifecycle management of applications, Experience in building and operating Cloud native software (any of: Google Cloud Platform, Azure, AWS), Experience with CI/CD processes using GitHub Actions, Understanding of Agile/Scrum/SAFe concepts, IT certification (i. e. Bootcamp, SCRUM or Cloud Certification). What we offer Responsibilities as of day 1. You will have project ownership and autonomy to deliver change and results from the beginning Dynamic and encouraging work environment. At P&G our employees are at the core, we value every individual and encourage initiatives, promoting agility and work/life balance Continuous mentoring, you will work with hardworking people and receive ongoing coaching and mentoring from your line manager and other colleagues. Corporate and functional training will enable you to succeed and develop from day one Industry Certifications (ITIL, DevOps, MS portfolio etc), full additional benefit program like private health care, P&G Dynamic Living programs like sport cards, in-office fitness center, PG stock options, saving plans, lunch subsidy, regular salary increases and possible promotions, flexible work arrangements, mentoring programs & trainings Big Picture understanding of P&G IT and Product Supply organization and its Services in global multi-functional teams with several locations across continents At Procter & Gamble, we embrace a hybrid work model that combines the flexibility of remote work with the collaborative benefits of in-office engagement. Employees can enjoy the option to work from home two days a week while also spending time in the office to foster teamwork and enhance communication. At P&G #weseeequal We are an equal opportunity employer and value diversity at our company. At P&G we strive to build a culture where everyone feels welcome, included, and able to bring their full selves to work. We ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process. Please click here if you require an accommodation during the application process. Please make sure to wait to hear back from us regarding your accommodation before proceeding with the online assessment, we thank you in advance for your patience. Kindly be advised that at P&G, employment is exclusively extended on the basis of "Umowa o Pracę" (Full-time Employment Contract). Apply only if you agree to these conditions.

🏢 Summary: Senior role focused on designing, building, and maintaining advanced Power Platform and AI-enabled solutions, integrating infrastructure, data, and pro-code extensions into cohesive enterprise architectures. The position involves developing complex Power Apps and Power Automate solutions, implementing Dataverse models, and enabling AI capabilities using Azure services. It also includes responsibility for CI/CD, ALM, hybrid data integration, and governance within enterprise environments. 🗂️ Requirements: Advanced expertise in Power Apps (Canvas, Model-Driven), Advanced expertise in Power Automate (cloud flows, Desktop flows, error handling), Advanced Dataverse data modeling and security configuration, Strong C# and .NET development for Dataverse plugins and workflows, Strong JavaScript and TypeScript for Model-Driven apps and PCF, Experience with Web APIs and Custom Connectors, Strong SQL and T-SQL with performance optimization, Experience with hybrid data architecture and On-Premises Data Gateway, Hands-on experience with AI Builder, Copilot Studio, Azure OpenAI, Experience with ALM and CI/CD pipelines, Understanding of Power Platform governance and architecture, Very good English skills 📃 Skills: PowerApps, PowerAutomate, Dataverse, C#, .NET, JavaScript, TypeScript, PCF, SQL, T-SQL, WebAPI, JSON, Azure, AzureFunctions, LogicApps, AzureDevOps, GitHubActions, AIBuider, CopilotStudio, AzureOpenAI, OnPremisesDataGateway 🏢 Description: As a recruitment company, DCG understands that every business is powered by experienced professionals. Our management style and partnership approach enable us to meet your needs and provide continuous support. Due to our ongoing growth and the large number of recruitment projects we undertake for our partners, we are currently looking for Senior Power Platform & AI Infrastructure Engineer Responsibilities: Support applications and infrastructure required to enable AI use cases within the Power Platform Drive and coordinate all infrastructure components, ensuring they work together as a coherent end‑to‑end solution Design, build, and maintain advanced Power Apps (Canvas and Model‑Driven) with focus on performance, delegation, and complex business processes Develop and manage Power Automate solutions, including cloud flows, child flows, advanced error handling, and Desktop flows (RPA) Design and maintain Dataverse data models, including security roles, business units, field‑level security, and calculated/rollup columns Implement pro‑code extensions using C#/.NET, JavaScript/TypeScript, and PCF for scenarios exceeding low‑code capabilities Design and integrate solutions using Web APIs, Custom Connectors, and Dataverse Web API Work with SQL‑based data sources, including advanced queries, stored procedures, and performance tuning Implement hybrid data architectures, including On‑Premises Data Gateway and Virtual Tables Enable and integrate AI capabilities using AI Builder, Copilot Studio, and Azure OpenAI within the Power Platform Design and manage ALM and CI/CD pipelines using Azure DevOps or GitHub Actions Utilize Azure services (Functions, Logic Apps) to support processing efficiency and cost optimization Advise on governance, security, licensing optimization, and environment strategy (Dev/Test/Prod) Requirements: Advanced mastery of Microsoft Power Platform: Power Apps (Canvas and Model‑Driven), Power Automate (cloud flows, Desktop flows, advanced error handling) and Dataverse (advanced data modeling and security) Strong pro‑code development experience: C# / .NET (Dataverse plugins, custom workflow activities) and JavaScript / TypeScript (Model‑Driven apps, PCF) Extensive experience with Web APIs, Custom Connectors, and JSON‑based integrations Strong SQL / T‑SQL skills, including performance optimization Experience with hybrid data architectures and On‑Premises Data Gateway Hands‑on experience implementing AI solutions with: AI Builder, Copilot Studio and Azure OpenAI and prompt design Experience with ALM, CI/CD , and solution deployment strategies Good understanding of Power Platform governance and architecture Very good command of English , both spoken and written Nice to have: Experience with Power BI Service, including embedded analytics, DAX, and RLS Experience with Power BI Dataflows / Power Query Online Microsoft certifications such as: PL‑400, PL‑600, PL‑500, PL‑300, DP‑300 and AI‑102 Offer: Private medical care Co-financing for the sports card Training & learning opportunities Constant support of dedicated consultant Employee referral program

🏢 Summary: Senior Full Stack Engineer role focused on building and owning end-to-end product features for an AI-driven platform that automates complex business processes. The position involves developing frontend and backend solutions, designing APIs, improving performance and usability, and leveraging AI tools in daily engineering work. The role is office-based in Warsaw and requires strong product thinking and production-level experience. 🗂️ Requirements: Senior-level experience building production web applications, Strong knowledge of React and TypeScript or similar frontend framework, Experience designing and developing backend APIs and application logic, Ability to build and maintain frontend and backend features end-to-end, Experience working with production environments and monitoring released features, Daily use of AI tools for development and problem-solving, Strong understanding of code quality, testing, and long-term ownership 📃 Skills: React, TypeScript, JavaScript, API, REST, Node.js, Python, GitHub, Copilot, Claude, OpenAI, Codex, TypingMind, MCP, AI 🏢 Description: About Us Many companies want to use AI agents, but these agents often have problems with complex business tasks. We help solve this issue. Our platform understands company rules, processes, and workflows, so AI can make better decisions instead of only giving simple answers. This allows businesses to use AI that is accurate, follows company policies, and can be trusted. Well-known companies use our technology to automate up to 85% of customer cases, reduce handling time by 20–25%, and complete tasks that used to take hours in just a few seconds. We work with leading technology partners and have received industry recognition for our innovative approach. Our mission is to give people better answers everywhere. About the Role We are looking for a Senior Full Stack Engineer with strong product thinking. In this role, you will own features from start to finish. You will understand user needs, plan solutions, build frontend and backend functionality, release new features, and improve them based on user feedback. You should feel comfortable working on user interfaces, APIs, and production quality while collaborating with product and design teams. Location: Warsaw (office-based). Responsibilities Build and deliver product features across both frontend and backend. Turn product ideas into practical and effective solutions. Work with user interfaces, business logic, APIs, and data flows. Cooperate closely with product managers and designers, even when requirements are still developing. Improve usability, performance, reliability, and overall user experience. Monitor released features and use production data to make improvements. Use AI tools every day to work faster and improve engineering processes. Maintain high standards for code quality, testing, and long-term ownership. Requirements Strong experience as a senior engineer building production web applications. Good knowledge of React, TypeScript, or a similar modern frontend framework. Experience designing and developing backend APIs and application logic. Strong product mindset with the ability to identify and improve weak user experiences. Good decision-making skills when balancing scope, speed, and technical quality. Clear communication and teamwork across engineering, product, and design. Daily experience using AI tools for development and problem-solving. Nice to Have Experience building AI-powered products such as chat, search, recommendation systems, workflows, or AI agents. Knowledge of Python, Node.js, or both. Experience owning product areas independently. Understanding of performance optimization, accessibility, and high-quality web applications. What We Offer B2B contract and company stock options. MacBook Pro for work. Modern technology stack with opportunities to contribute to open-source projects. Advanced AI development tools, including GitHub Copilot, Claude Code, OpenAI Codex, TypingMind, and MCP Servers. Why Join Us Our leadership team has strong experience in knowledge management and AI. We have raised more than $60 million in funding and achieved three years of continuous 3x growth. Our work is guided by these core values: Quality: We aim for excellent craftsmanship and high standards in everything we build. Momentum: We take initiative and keep projects moving forward. Accountability: We take responsibility, give honest feedback, and support each other. Hard Work: We believe difficult goals require dedication and teamwork. Learning Agility: We stay curious, learn from mistakes, and keep improving. Adapt and Thrive: We accept change and see challenges as opportunities. Win Together: We succeed as a team through honesty, openness, and shared commitment.

🏢 Summary: Senior fullstack (backend-heavy) engineer to build a greenfield prenatal screening diagnostics product, owning architecture and features end-to-end from backend to selected frontend components. The role focuses on designing scalable Java/Spring Boot services, APIs, and data models, while contributing to React/TypeScript UI and shaping technical direction in a fast-moving MVP phase. Strong emphasis on clean architecture, testing discipline, AWS deployment, PostgreSQL, and effective use of AI-assisted development tools. 🗂️ Requirements: Strong expertise in Java and Spring Boot, Clean API design and domain modeling, Experience defining service boundaries and scalable architectures, Solid understanding of OOP, SOLID, and clean architecture, Working proficiency in React and TypeScript, Proven use of AI coding tools in daily workflow, Experience writing unit, integration, and API tests, PostgreSQL schema design and query optimization, AWS production deployment experience (ECS/EKS, RDS, Lambda, S3), Ability to work in greenfield, ambiguous environments 📃 Skills: Java, Spring, SpringBoot, React, TypeScript, PostgreSQL, AWS, ECS, EKS, RDS, Lambda, S3, REST, OOP, SOLID, SQL, AI, Cursor, Claude 🏢 Description: We are building a new prenatal screening diagnostics product from scratch. The project is currently in an early greenfield phase, with MVP delivery planned within the next six months. We are looking for a senior engineer who enjoys building products end-to-end and feels comfortable taking ownership across the full development lifecycle — from backend architecture and data modeling to APIs and selected frontend features. This role is backend-heavy, but requires a pragmatic fullstack mindset and the ability to contribute wherever needed. You will work closely with product stakeholders in a fast-moving environment, helping shape both technical direction and product decisions. We are particularly interested in engineers who actively use AI-assisted development tools (such as Cursor, Claude Code, or similar) as part of their daily workflow and understand how to leverage them effectively while maintaining high engineering standards and code quality. You will have a direct impact on: defining system architecture and service boundaries, designing scalable backend solutions, building APIs and core business logic, contributing to React/TypeScript frontend development, establishing engineering best practices, testing strategy, and maintainable code standards. The project operates in the diagnostics domain, so attention to quality, reliability, and clean engineering practices is essential. Requirements: Strong Java and Spring Boot expertise — clean API design, domain modeling, sound architectural trade-offs. You think in terms of service boundaries, data flow, and maintainability, not just making it work Solid grasp of software design principles — object-oriented programming, SOLID, clean architecture, separation of concerns. You write code that the next person can read, extend, and trust. You know when a pattern helps and when it's ceremony Working proficiency in React and TypeScript — you can pick up frontend tasks, build components, and integrate with backend APIs independently Proven experience integrating AI coding tools (Claude Code, Cursor, or equivalent) into daily development workflow — including prompt design for code generation, output validation, and actively preventing AI-generated technical debt. You can describe concrete examples of where AI accelerated your delivery and where you chose to override it Testing as a professional discipline, not a checkbox — you write unit, integration, and API tests as part of delivery, own the test pyramid decisions, and treat untested code as unfinished code PostgreSQL — schema design, query optimization, migrations in a production context AWS experience — you've deployed and operated production workloads on AWS (ECS/EKS, RDS, Lambda, S3) and can make informed infrastructure decisions Comfort working in ambiguous, greenfield settings — you define scope with stakeholders rather than waiting for pre-scoped tickets Responsibilities: Own features end-to-end: design, implement, test, deploy, and maintain across the full stack. Work split ~80% backend, 20% frontend. Make foundational architectural decisions on a greenfield codebase — data models, API contracts, service boundaries, test strategy Build and maintain the Java/Spring Boot backend that powers the product's core logic Contribute to the React/TypeScript frontend when needed — you're backend-primary, but you ship UI when the team needs it Integrate AI coding tools into your daily workflow to accelerate delivery while maintaining code quality — and help the team adopt these practices Collaborate directly with product stakeholders to refine requirements in a fast-moving, low-ceremony environment

🏢 Summary: The offer is for a Senior AI Fullstack Engineer to design and deliver production-ready, LLM-powered web applications using modern React and Next.js architecture. The role focuses on building autonomous agents, RAG systems, and AI-driven workflows integrated with enterprise-grade products. It involves end-to-end ownership of scalable AI solutions from architecture to deployment. 🗂️ Requirements: 8+ years experience as consultant or forward deployed engineer, Strong experience with Next.js (App Router), React, TypeScript, Deep understanding of Server and Client Components (RSC), Experience with streaming, caching, revalidation, Server Actions, Experience with Vercel AI SDK, LangGraph or MCP, Experience building RAG systems, Hands-on experience with Anthropic and OpenAI APIs, Experience shipping LLM-powered features to production, Practical experience with prompt engineering and structured outputs, Experience with tool calling and agent workflows, Experience with multi-turn orchestration, Understanding of token economics and context windows, Experience with prompt evaluation methods, Ability to design robust, production-ready AI systems 📃 Skills: Next.js, React, TypeScript, RSC, Vercel, LangGraph, MCP, RAG, Claude, OpenAI, Anthropic, Prompting, Streaming, ServerActions, Agents, APIs 🏢 Description: About the Role At Blazity, we are a team of React.js and Next.js experts building modern, API-first digital products for enterprise clients. We are expanding our AI capabilities—autonomous agents, AI-driven automation, and LLM-powered workflows—and are looking for a Senior AI Fullstack Engineer who can design and ship production-ready AI systems. You will work at the intersection of modern web architecture and generative AI , taking ownership of solutions delivered to real users. Our requirements Must-have Technical Excellence: 8+ years of experience as a consultant / forward deployed engineer Strong experience with Next.js (App Router), React, TypeScript Deep understanding of: Server vs Client Components (RSC) streaming, caching, revalidation, Server Actions Vercel AI SDK / LangGraph / MCP Experience building RAG systems Claude extended thinking / prompt caching / Batch APIs AI Engineering: Proven experience shipping LLM-powered features to production Hands-on with Anthropic / OpenAI APIs (messages, tool use, streaming) Practical experience with: prompt engineering (structured output, few-shot, XML) tool calling / agent workflows multi-turn orchestration Understanding of: token economics (input/output costs, context window) latency vs quality trade-offs Reliability & Quality: Experience with: prompt evaluations (LLM-as-judge, rule-based) handling hallucinations and failure modes Ability to design robust AI systems , not just prototypes Soft Skills: Strong ownership mindset Experience working directly with clients Clear communication and structured thinking (English C1) Ability to make decisions in ambiguous environments Nice-to-have: What You Will Do Ship Production Apps: Build scalable web applications using Next.js (App Router) and TypeScript , ensuring high performance and clean architecture. Engineer AI Workflows: Develop and orchestrate LLM-powered features using Anthropic and OpenAI APIs, focusing on tool use and streaming. Agentic Orchestration: Design autonomous agent loops and multi-turn workflows, knowing when to use a structured pipeline versus a dynamic agent. Optimize & Evaluate: Manage token economics (pricing, context windows) and implement prompt evaluations (LLM-as-judge, rule-based) to ensure system reliability. Collaborate: Work directly with senior engineers, founders, and client teams to shape AI capabilities from concept to production. What we offer B2B: 120 – 180 PLN/h + VAT 🔥 100% remote (Poland) 29 paid vacation days Private healthcare + sports card High-impact work on real AI systems

🏢 Summary: Frontend Engineer role focused on building enterprise AI applications using Next.js, React, and TypeScript in a fully on-site Warsaw office environment. The position involves developing real-time AI interfaces, managing complex frontend state, improving performance and accessibility, and contributing to technical decisions. Candidates will work with modern AI development tools and enterprise-scale frontend systems. 🗂️ Requirements: 3–5 years of frontend engineering experience, Strong knowledge of React, Strong knowledge of TypeScript, Strong knowledge of Next.js, Experience building production Next.js applications, Understanding of SSR, SSG, and CSR, Experience with complex state management, Experience with real-time updates and optimistic UI, Experience building AI or LLM-based interfaces, Understanding of frontend performance and Core Web Vitals, Knowledge of accessibility and localization, Security-focused development approach, Experience using AI coding assistants, Good communication skills, Ability to work fully on-site in Warsaw 📃 Skills: React, TypeScript, Next.js, SSR, SSG, CSR, AI, LLM, CoreWebVitals, Localization, Accessibility, Security, GitHubCopilot, OpenAI, Claude, ReactFlow, Highcharts, RAG, MCP, DSPy, Node.js, Python 🏢 Description: About us We believe that businesses are moving toward AI-powered work, and we are building a platform for this future. Many AI agents cannot handle complex business tasks. We created a platform that organizes company policies, workflows, and business knowledge into one AI data model. This helps AI agents make accurate decisions and deliver reliable results at scale. We already work with enterprise customers such as Glovo, Nespresso, and HelloFresh. Our platform supports thousands of users and processes real production data. Customers trust us with important business knowledge because we provide a secure and reliable solution with SOC2 and HIPAA-ready security practices. Job description We are looking for a frontend engineer with several years of experience who wants to build user interfaces for enterprise AI products. You will help create applications that allow users to work with AI systems in a simple and reliable way. You will build production applications using Next.js, work with complex application state, real-time AI features, and modern frontend technologies. Over time, you will also take part in important technical decisions. The position is based in Warsaw and requires working from the office. Responsibilities - Build and deliver production Next.js applications with complex state management and real-time AI features. - Create user interfaces for AI-powered tools, including streaming AI responses, semantic search, knowledge graphs, and AI agents. - Help improve our component library and design system to keep the UI consistent, reusable, and accessible. - Develop enterprise features such as localization, accessibility, browser compatibility, and security. - Monitor applications after release, improve performance, reduce bundle size, and track Core Web Vitals. - Use AI tools every day to improve development speed and internal frontend workflows. - Maintain high code quality through testing and code reviews. Requirements - Around 3–5 years of experience as a frontend engineer. - Strong knowledge of React, TypeScript, and Next.js. - Experience building production Next.js applications and understanding the differences between SSR, SSG, and CSR. - Good experience with state management, including real-time updates, optimistic UI, and multi-tenant applications. - Experience building AI or LLM-based interfaces such as chat applications, streaming responses, or semantic search. - Good understanding of frontend performance, Core Web Vitals, and user experience. - A security-focused approach and knowledge of accessibility and localization. - Experience using AI coding assistants as part of your daily development work. - Good communication skills and the ability to explain technical decisions clearly. Nice to have - Experience with React Flow, Highcharts, or other data visualization libraries. - Experience building vector search, RAG, or semantic search interfaces. - Knowledge of MCP, DSPy, or other modern AI frameworks. - Basic understanding of Node.js or Python backend development. - Contributions to design systems or open-source UI libraries. What we offer - B2B contract and company stock options. - MacBook Pro. - Modern technology stack and the opportunity to contribute to open-source projects. - An AI-focused development environment with tools such as Claude Code, OpenAI Codex, and GitHub Copilot. Our values - Quality – We care about excellent work and high standards in everything we build. - Momentum – We take initiative, share ideas, and keep moving forward. - Accountability – We take responsibility for our work and give honest, respectful feedback. - Hard work – We believe success comes from teamwork, dedication, and consistent effort. - Learning agility – We stay curious, learn from mistakes, and continue improving. - Adapt and thrive – We welcome change and see challenges as opportunities to grow. - Win together – We work as one team, communicate openly, and support our shared goals.

🏢 Summary: Senior Full Stack Product Engineer role focused on building end-to-end AI-powered product features across frontend and backend systems in a fully on-site Warsaw office environment. The position involves owning the full development lifecycle, collaborating with product and design teams, and improving performance, usability, and reliability of production applications. Engineers will work with modern AI development tools and contribute to scalable enterprise-grade solutions. 🗂️ Requirements: Senior-level experience building production web applications, Strong frontend experience with React or TypeScript, Backend experience designing APIs and backend services, Experience working across full-stack web development, Ability to improve UX and simplify workflows, Experience making technical decisions balancing scope and quality, Security-focused approach with sensitive data handling, Experience collaborating with engineering, product, and design teams, Daily use of AI tools in software development, Ability to work fully on-site in Warsaw 📃 Skills: React, TypeScript, API, Python, Node.js, AI, Claude, OpenAI, Codex, GitHub, Copilot 🏢 Description: About us We believe that businesses are moving toward AI-powered work, and we are building a platform for this future. Many AI agents cannot handle complex business tasks. We created a platform that organizes company policies, workflows, and business knowledge into one AI data model. This helps AI agents make accurate decisions and deliver reliable results at scale. We already work with well-known enterprise customers such as Glovo, Nespresso, and HelloFresh. Our platform supports thousands of users and processes real production data. Customers trust us with important business knowledge because we provide a secure and reliable solution with SOC2, HIPAA-ready security practices, and strong integrations. Job description We are looking for a Senior Full Stack Product Engineer who enjoys building complete product solutions from start to finish. In this role, you will understand customer needs, design the right technical solution, build new features, and improve them after release. You will work across both frontend and backend, taking ownership of the whole development process - from the first idea to production. The position is based in Warsaw and requires working from the office. Responsibilities - Build and deliver product features across both frontend and backend. - Turn product ideas into practical technical solutions with the right scope and priorities. - Work across the full technology stack, including user interfaces, backend logic, APIs, and data flows. - Work closely with product managers and designers, even when requirements are still changing. - Improve usability, performance, reliability, and overall product quality. - Monitor applications after release, analyze logs and system data, and continue improving the product. - Use AI tools every day to improve development speed, workflows, and engineering processes. - Maintain high standards for code quality, testing, and long-term ownership. Requirements - Strong senior-level experience building and delivering production web applications. - Strong frontend skills with React, TypeScript, or a similar modern web framework. - Good backend experience designing APIs, backend services, and data flows. - Strong product thinking with the ability to improve user experience and simplify complex workflows. - Good judgment when making technical decisions and balancing scope, quality, and delivery time. - A security-focused approach and experience handling sensitive data. - Good communication skills and experience working with engineering, product, and design teams. - Experience using AI tools as part of your daily software development work. Nice to have - Experience building AI-powered products such as chat applications, search, recommendation systems, workflows, or AI agents. - Experience with Python, Node.js, or both. - Experience leading product areas with a high level of ownership. - Good understanding of web performance, accessibility, and production quality. What we offer - B2B contract and company stock options. - MacBook Pro. - Modern technology stack and the opportunity to contribute to open-source projects. - An AI-focused development environment with tools such as Claude Code, OpenAI Codex, and GitHub Copilot. Our values - Quality – We care about excellent work and high standards in everything we build. - Momentum – We take initiative, share ideas, and keep moving forward. - Accountability – We take responsibility for our work and give honest, respectful feedback. - Hard work – We believe success comes from teamwork, dedication, and consistent effort. - Learning agility – We stay curious, learn from mistakes, and continue improving. - Adapt and thrive – We welcome change and see challenges as opportunities to grow. - Win together – We work as one team, communicate openly, and support our shared goals.

🏢 Summary: Senior Full-Stack Engineer role focused on building and maintaining internal applications that connect in-house experts with millions of clients on a large-scale consumer platform. The position involves leading complex projects, shaping features from concept to deployment, and driving technical decisions using modern practices like TDD and continuous delivery. The role combines hands-on development with technical leadership and cross-functional collaboration. 🗂️ Requirements: 5+ years of professional software development experience, Experience as Technical Lead, Extensive hands-on experience with Ruby on Rails, Extensive hands-on experience with TypeScript, Experience with Next.js, Experience with React, Experience with CSS/Sass, Experience with GraphQL, Experience with Apollo, Experience designing and consuming APIs, Ability to lead complex technical projects, Experience with TDD, Experience with continuous delivery, Experience with service-oriented architecture 📃 Skills: Ruby, Rails, TypeScript, Next.js, React, CSS, Sass, GraphQL, Apollo, TDD, CI/CD, SOA, API 🏢 Description: We are looking for a Senior Full-Stack Engineer to join project for a leading US-based tech-driven consumer platform. In this role, you will build and maintain the internal applications that empower thousands of in-house experts to connect with millions of clients. By combining human expertise with best-in-class AI and recommendation algorithms, your work will have a direct, high-visibility impact on client retention and operational efficiency. You will be joining a collaborative, agile-inspired team of bright and kind engineers who value integrity, innovation, and trust, while utilizing modern practices like TDD, continuous delivery, and service-oriented architecture. Responsibilities: Lead the execution of complex projects within your team and across multiple engineering units. Act as an engaged, hands-on team member - lead meetings, create technical design documents, and pair program with other engineers. Collaborate closely with product, design, UX, data science, and mobile partners to shape features from concept to deployment. Provide technical leadership through mentorship, timely feedback, and code reviews, actively investing in the career growth of your teammates (team size: 1 Lead + 3 Senior FTEs). Break down large projects into actionable milestones and deliver sustainable results against measurable goals. Use data to frame business problems and drive technical decisions, guiding other engineers toward solutions that balance quality with pragmatism. Proactively communicate status updates, scope changes, and timeline shifts to teammates, stakeholders, and leadership. Participate in on-call rotations and help improve the on-call experience for others. Min requirements: 5+ years of professional software development experience. Have an experience as a technical lead Extensive, hands-on experience with Ruby on Rails, TypeScript, Next.js, React, and CSS/Sass . Proven experience with GraphQL and Apollo , including both consuming APIs and designing schemas. Exceptional communication skills with a track record of setting clear priorities and sharing them openly. A collaborative mindset - you enjoy mentoring other engineers, creating space for them to grow, and believe strong teams are built on trust and honesty. Would be a plus: Previous experience working in client-side / customer-facing teams. We offer: Opportunity to work on bleeding-edge projects Work with a highly motivated and dedicated team Competitive salary Flexible schedule Benefits package - medical insurance, sports Corporate social events Professional development opportunities Well-equipped office About us: Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI , supported by profound expertise and ongoing investment in data , analytics , cloud & DevOps , application modernization and customer experience . Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.