Fullstack Engineer - Node/React/Typescript + AI Solutions

🏢 Summary: Hybrid Fullstack Engineer role in Warsaw focused on building scalable enterprise applications using Node.js, C#, .NET, React, AngularJS, and SQL Server. The position involves backend and frontend development, architecture contributions, and collaboration with cross-functional engineering teams. Experience with cloud-native and containerized technologies is considered a plus. 🗂️ Requirements: 7+ years of full-stack development experience, Expertise in React, Expertise in Node.js, Expertise in C#, Expertise in ASP.NET, Strong SQL Server experience, Experience building scalable enterprise applications, Experience developing APIs, Strong application design skills, Analytical and problem-solving skills, Attention to software quality, Communication skills, Collaboration skills 📃 Skills: Node.js, C#, .NET, React, AngularJS, SQL, T-SQL, ASP.NET, SQLServer, APIs, Cloud, Containers, Streaming 🏢 Description: Fullstack Engineer Warsaw, hybrid. Responsibilities Develop and maintain server-side applications using Node.js, C#, and .NET . Build responsive user interfaces with React and AngularJS . Design and optimize SQL Server solutions, including T-SQL and stored procedures. Contribute to application architecture, technical design, and technology decisions. Build scalable solutions leveraging modern cloud, container, and streaming technologies. Collaborate with cross-functional engineering teams to deliver high-quality software. Requirements 7+ years of full-stack development experience . Strong hands-on expertise in React, Node.js, C#, ASP.NET , and SQL Server . Experience developing scalable enterprise applications and APIs. Strong application design, analytical, and problem-solving skills. High attention to detail and commitment to software quality. Excellent communication and collaboration skills. Nice to Have Experience with cloud-native, containerized, or event-driven architectures. Financial services or large enterprise environment experience.

🏢 Summary: Backend-focused Fullstack Engineer role (80% backend) focused on designing and maintaining scalable, secure backend services and APIs for data-driven and integration platforms. The position involves working with distributed systems, system integrations, and cloud infrastructure while contributing to frontend development with React. You will own features end-to-end from design to deployment in a distributed international team. 🗂️ Requirements: ~5 years backend experience with Node.js and TypeScript, Strong knowledge of relational databases, Experience building REST APIs and distributed services, Hands-on experience with cloud infrastructure, Experience with Kubernetes, Practical experience with React, Experience with system integrations 📃 Skills: TypeScript, Node.js, React, PostgreSQL, GCP, Kubernetes, REST, SQL 🏢 Description: Fullstack Engineer (Backend-Focused) We’re looking for a Backend-heavy Fullstack Engineer (80% backend, 20% frontend) to join a distributed team building critical data and integration platforms. What You’ll Do Design and maintain scalable, secure backend services and APIs Work on system integrations and data-centric platforms Collaborate across frontend, backend, and data teams Take full ownership of features from design to deployment Tech Stack TypeScript / Node.js , React Relational databases (PostgreSQL or similar) Cloud infrastructure (GCP), Kubernetes REST APIs, system integrations, distributed services Who We’re Looking For ~5 years backend experience with Node.js / TypeScript Strong relational database knowledge Experience with React (frontend contribution) Cloud and Kubernetes experience Excellent communication skills , ownership, and proactive collaboration Comfortable working in distributed international teams

🏢 Summary: Senior / Staff Full Stack Engineer role focused on building and scaling an AI-driven product platform in a fully remote setup. The position involves developing React/TypeScript frontend experiences and Python-based backend APIs to support document processing, retrieval systems, and structured AI/ML outputs. The engineer will integrate frontend, backend, and AI workflows into a reliable, testable product experience. 🗂️ Requirements: 5+ years full stack engineering experience, Strong Python backend API development experience, Strong React and TypeScript production experience, Experience with modern API frameworks (e.g. FastAPI), Experience designing and consuming API contracts and structured JSON, Experience with asynchronous workflows and background jobs, Testing experience covering edge cases and API behavior, Understanding of AI/ML product workflows 📃 Skills: Python, React, TypeScript, FastAPI, API, JSON, AI, ML, LLM, OpenAI, Gemini, Anthropic, Embeddings, Vector, Firebase, Firestore, GCP, CloudRun, CloudSQL, Neo4j 🏢 Description: We are looking for a Senior / Staff Full Stack Engineer with strong Python and React experience to build and scale an AI driven product platform in a fully remote setup. The role focuses on frontend experiences, backend APIs, document processing, retrieval systems, and structured AI / ML outputs. ✅ Your responsibilities: Building frontend experiences in React and TypeScript for evidence review, workflow status, recommendations, and decision outputs. Developing backend APIs in Python, ideally with FastAPI, for document upload, asynchronous processing, job status, retries, partial success, and structured results. Connecting frontend, backend, data workflows, retrieval systems, and AI generated outputs into a reliable product experience. Building product features that make AI outputs easier to inspect through source references, confidence signals, warnings, and clear error states. Working with structured data, documents, tables, financial metrics, and normalized evidence flows. Writing tests around API contracts, edge cases, error cases, and realistic user workflows. 🧠 Our requirements: 5+ years of professional full stack engineering experience. Strong experience with Python and backend API development. Strong experience with React and TypeScript in production applications. Experience with modern API frameworks, ideally FastAPI or similar. Understanding of AI / ML product workflows or strong interest in building software around AI outputs. Experience designing and consuming API contracts, schemas, and structured JSON payloads. Comfort with asynchronous workflows, background jobs, retries, partial failures, and user visible process status. Good testing habits, especially around edge cases, failure cases, and API behavior. ⭐ Nice to Have: Experience with AI / ML product workflows, including retrieval systems, embeddings, vector search, LLM based applications, or LLM APIs such as OpenAI, Gemini, Anthropic/Claude. Experience with data heavy products, including data workflows, document processing, data normalization, or working with structured evidence. Experience with cloud and data infrastructure, ideally Firebase, Firestore, Google Cloud Platform, Cloud Run, Cloud SQL, vector search, or Neo4j. 🌟 What we offer: 100% remote work Opportunity to work on modern ML/AI infrastructure Private healthcare and Multisport Life insurance Real influence on technical decisions and architecture Exposure to cutting-edge technologies Collaborative and supportive team environment

🏢 Summary: The offer is for a Full Stack Software Engineer to design and develop scalable backend services, RESTful APIs, and modern frontend applications using TypeScript and React or Angular. The role involves working with Python, PostgreSQL, and AWS-based cloud environments to deliver reliable, high-performance solutions. It also includes contributing to CI/CD pipelines and cloud-native infrastructure setup. 🗂️ Requirements: Strong experience with TypeScript, Proficiency in React or Angular, Backend and RESTful API development experience, Experience with Python, Knowledge of relational databases, Experience with PostgreSQL, Experience with AWS cloud services, Ability to work across the full stack, Experience with CI/CD pipelines, Experience with cloud infrastructure setup 📃 Skills: TypeScript, React, Angular, Python, REST, PostgreSQL, AWS, CI/CD, Kubernetes, Docker 🏢 Description: Do you enjoy building polished, user-friendly applications while working across the full stack? We are looking for a talented Full Stack Software Engineer to design and develop scalable backend services, RESTful APIs, and modern frontend applications using TypeScript and React or Angular. You’ll also get to leverage Python for backend scripting and work with cloud-native systems to deliver solutions that make a real impact. What You’ll Do: Build and maintain RESTful APIs and backend services in a cloud environment. Develop responsive frontend applications using React/TypeScript or Angular. Work with relational databases (PostgreSQL) and integrate multiple data sources. Ensure applications are reliable, scalable, and performant. Collaborate with stakeholders to translate requirements into high-quality technical solutions. Contribute to CI/CD pipelines, deployment automation, and cloud infrastructure setup. Must Haves: Strong experience with TypeScript and React or Angular Backend/API development experience and familiarity with Python Knowledge of relational databases and cloud-based systems (AWS preferred) Ability to work across the full stack and take ownership of solutions Nice to Haves: Experience with distributed systems or service-oriented architectures Familiarity with containers, Kubernetes, and cloud-native deployment patterns Exposure to data-intensive or analytics-driven applications

🏢 Summary: Full Stack Software Engineer role focused on building scalable backend services and RESTful APIs while developing modern frontend applications using TypeScript and React or Angular in a cloud environment. The position involves working across the full stack, leveraging Python, PostgreSQL, and AWS to deliver reliable, high-performance solutions. You will contribute to CI/CD pipelines and cloud infrastructure setup to support scalable deployments. 🗂️ Requirements: Strong experience with TypeScript, Strong experience with React or Angular, Backend and RESTful API development experience, Experience with Python, Knowledge of relational databases, Experience with cloud-based systems, Ability to work across the full stack 📃 Skills: TypeScript, React, Angular, Python, REST, PostgreSQL, AWS, CI/CD, Kubernetes, Docker 🏢 Description: Do you enjoy building polished, user-friendly applications while working across the full stack? We are looking for a talented Full Stack Software Engineer to design and develop scalable backend services, RESTful APIs, and modern frontend applications using TypeScript and React or Angular. You’ll also get to leverage Python for backend scripting and work with cloud-native systems to deliver solutions that make a real impact. What You’ll Do: Build and maintain RESTful APIs and backend services in a cloud environment. Develop responsive frontend applications using React/TypeScript or Angular. Work with relational databases (PostgreSQL) and integrate multiple data sources. Ensure applications are reliable, scalable, and performant. Collaborate with stakeholders to translate requirements into high-quality technical solutions. Contribute to CI/CD pipelines, deployment automation, and cloud infrastructure setup. Must Haves: Strong experience with TypeScript and React or Angular Backend/API development experience and familiarity with Python Knowledge of relational databases and cloud-based systems (AWS preferred) Ability to work across the full stack and take ownership of solutions Nice to Haves: Experience with distributed systems or service-oriented architectures Familiarity with containers, Kubernetes, and cloud-native deployment patterns Exposure to data-intensive or analytics-driven applications

🏢 Summary: Senior Fullstack Engineer role focused on building modern, scalable web applications using React and Node.js, with strong emphasis on frontend development. The position covers the full application stack, including backend services, API design, and data management. You will collaborate with cross-functional teams to deliver high-quality, accessible, and high-performance digital products. 🗂️ Requirements: Strong commercial experience with React, Strong commercial experience with Node.js, Experience with React Router, Experience with TanStack Query, Experience integrating Headless CMS (preferably Contentful), Understanding of API design principles, Experience with PostgreSQL, Experience with Redis, Experience with Vitest, Experience with Playwright, Knowledge of WCAG accessibility standards, Experience with performance optimisation, Ability to work across full software development lifecycle 📃 Skills: React, Node.js, TypeScript, Fastify, PostgreSQL, Redis, React Router, TanStack Query, Contentful, Vitest, Playwright, WCAG, SAP Gigya, Salesforce 🏢 Description: Senior Fullstack Engineer (React & Node.js) About the Role We are looking for a Senior Fullstack Engineer to join a product team building modern, scalable web applications and digital experiences. You will work across the entire application stack, from user-facing interfaces to backend services and integrations. The role has a strong focus on frontend engineering while also involving backend development, API design, and data management. You will collaborate closely with product, design, and engineering teams to deliver high-quality, accessible, and performant applications. Responsibilities Develop and maintain modern web applications using React, Node.js, and TypeScript. Build scalable and reusable UI components integrated with a design system. Develop and maintain backend services and APIs using Node.js and Fastify. Integrate applications with CMS platforms and third-party services. Work with PostgreSQL and Redis to support application functionality and performance. Write and maintain automated tests, including unit and end-to-end tests. Ensure high standards of accessibility, performance, and code quality. Participate in architectural discussions and contribute to engineering best practices. Requirements Strong commercial experience in fullstack development using React and Node.js. Solid experience with modern frontend technologies, including React Router and TanStack Query. Experience integrating with Headless CMS platforms, preferably Contentful. Good understanding of API design and backend development principles. Experience with PostgreSQL and Redis. Experience with automated testing frameworks such as Vitest and Playwright. Strong understanding of accessibility standards (WCAG) and performance optimisation. Ability to work across the entire software development lifecycle in a product-oriented environment. Nice to Have Experience with authentication and identity platforms such as SAP Gigya. Experience integrating Salesforce products or loyalty platforms. Experience in highly scalable, customer-facing digital products. Experience working in agile, cross-functional product teams.

🏢 Summary: Senior Full-Stack Engineer role to build a greenfield system end-to-end using Java (Spring Boot), React (TypeScript), and AWS. The position focuses on AI-augmented engineering, leveraging LLMs and agentic workflows for architecture, code generation, automation, and delivery of production-grade features. Offered as a freelance (B2B) contract. 🗂️ Requirements: Senior-level software development experience, Strong experience with Java and Spring Boot, Strong experience with React and TypeScript, Hands-on experience with AWS cloud, Experience building and operating production systems, Experience with REST APIs and relational databases, Experience with CI/CD pipelines and containers, Solid understanding of software architecture and design patterns, Practical experience using LLMs and AI coding assistants, Ability to design and run agentic AI workflows, Experience with AI-driven code generation and refactoring, Experience automating development workflows using AI tools 📃 Skills: Java, SpringBoot, React, TypeScript, AWS, REST, SQL, CICD, Docker, LLMs, AI, Git, Scrum 🏢 Description: Join us as a Full‑Stack Engineer and help shape a greenfield system end‑to‑end with Java, React, and AWS - no legacy, no shortcuts. You’ll work hands‑on with AI‑augmented engineering, using LLMs and agentic workflows to drive architecture, automate workflows, and deliver production‑grade features. This role is offered on a freelance (B2B) contract. Requirements: Senior-level experience in software development Strong experience with Java (Spring Boot) and React (TypeScript) Hands-on cloud experience (AWS) Experience building and running production systems (REST APIs, relational databases, CI/CD, containers) Solid understanding of architecture, design patterns, and trade-offs Practical experience using AI tools (LLMs, coding assistants) in day-to-day work Ownership mindset and strong problem-solving skills English level: C1 AI Tooling Fluency & Augmented Engineering We're looking for an engineer who has genuinely internalised AI into their engineering practice. Your expertise should include: Agentic Workflows & Tool Chaining: Ability to design and run multi-step AI agent workflows - from technical research, through code generation, to validation against architectural constraints. AI-Driven Architectural Research: Proficiency in using LLMs to compare frameworks, evaluate libraries, analyze RFCs and standards, and produce well-grounded architectural recommendations. AI-Driven Code Generation & Refactoring: Hands-on experience generating Java services, React components, integration tests, and migration scripts using modern AI assistants. Workflow & Tooling Automation: Building small custom tools, scripts, or MCP integrations that accelerate the team's daily work. AI Judgment: Recognizing the failure modes (hallucinations, outdated knowledge, plausible-but-wrong code) and building habits that compensate for them. Nice to have: Experience in IoT projects cloud Main responsibilities: Designing and delivering production-grade features end-to-end across Java (Spring Boot) backend and React frontend. Architectural Decisions: Driving full-stack architectural choices on a greenfield codebase - data models, API contracts, service boundaries, frontend state architecture. No legacy to hide behind. AI-Augmented Engineering: Using AI agents and LLM-based tooling daily - for technical research, evaluating libraries and design trade-offs, generating and refactoring code, debugging, and writing tests. Workflow Automation: Identifying repetitive parts of the development lifecycle (code review prep, documentation, ticket grooming, test scaffolding, release notes) and building AI-driven automations around them. Research & Decision Support: Leveraging LLMs and agentic workflows to rapidly digest technical documentation, RFCs, and vendor specs - turning hours of reading into actionable architectural input. Business Partnership: Working directly with business stakeholders - translating fuzzy requirements into clear technical scope, pushing back where it matters, and co-shaping the roadmap. Scrum & Team Dynamics: Operating in a Scrum cadence with the maturity to keep ceremonies useful and lightweight, not bureaucratic.

🏢 Summary: The role involves designing, developing, and maintaining cloud-native enterprise applications as a Fullstack Engineer using Java and Angular. The position focuses on building scalable backend and frontend solutions within a microservices architecture, supporting CI/CD, containerization, and secure application design. The engineer will work in Agile teams and contribute to architecture, deployment, and system reliability. 🗂️ Requirements: 5+ years of backend development experience, Strong expertise in Java 17+, Experience with Spring Boot and Spring Security, Strong knowledge of Angular and TypeScript, Experience with PostgreSQL and Hibernate/JPA, Experience with microservices architecture, Hands-on experience with Maven, Git, GitHub, CI/CD, Knowledge of Kubernetes and Docker, Experience with SQL databases, Experience with REST API development, Experience with JUnit, AssertJ, Hamcrest, Bash/Shell scripting skills, Understanding of secure coding practices, Experience in Agile/Scrum environments, English level B2/C1 📃 Skills: Java, Spring, SpringBoot, SpringSecurity, Angular, TypeScript, PostgreSQL, Hibernate, JPA, Maven, Git, GitHub, CI/CD, Kubernetes, Docker, SQL, REST, JUnit, AssertJ, Hamcrest, Bash, Liquibase, Helm, Kafka, Python, Go, C, Grafana, Prometheus, Kibana, OWASP, JIRA 🏢 Description: We are looking for an experienced Fullstack Engineer who will be responsible for designing, developing, and maintaining modern enterprise applications in a cloud-native architecture. The person in this role will work on both backend and frontend solutions (Java + Angular). Our expectations 5+ years of professional backend development experience Strong expertise in Java 17+ and Spring ecosystem (Spring Boot, Spring Security) Strong knowledge of Angular and frontend development with TypeScript Experience with PostgreSQL, Hibernate/JPA Experience with cloud-native and microservices architecture Hands-on experience with Maven, Git, GitHub, and CI/CD pipelines Knowledge of Kubernetes, Docker Experience with SQL databases and REST API development Familiarity with JUnit, AssertJ, and Hamcrest Bash/Shell scripting skills Strong understanding of secure coding practices and scalable application design Experience working in Agile/Scrum environments Good English communication skills (B2/C1) Welcome Skills Experience with Kafka and event-driven architecture Knowledge of Python scripting Familiarity with Go (Golang) or C Experience with monitoring and logging tools such as Grafana, Prometheus, and Kibana Knowledge of OWASP Top 10 and application security best practices Experience with JIRA or similar project management tools Previous experience in enterprise-scale distributed systems Key tasks Develop and maintain scalable backend applications using Java 17+ and Spring Boot Design and optimize PostgreSQL databases and manage schema migrations with Liquibase Build and maintain modern frontend applications using Angular Develop secure, high-performance, and cloud-native solutions Contribute to CI/CD pipelines and deployment automation Support containerized deployments using Docker, Kubernetes, and Helm Collaborate with distributed engineering teams in Agile environments Participate in architecture discussions, code reviews, and technical mentoring Ensure application reliability, scalability, and maintainability across backend and frontend layers

🏢 Summary: Lead Full Stack Engineer role focused on building and scaling modern web applications using Node.js, Nest.js, React, and Next.js. The position combines hands-on development with technical leadership, architecture design, mentoring, and DevOps responsibilities. The role also emphasizes software quality, CI/CD, automated testing, and the use of AI-powered development tools. 🗂️ Requirements: 6+ years of Full Stack web development experience, Strong expertise in Nest.js, Strong expertise in Node.js, Strong expertise in React, Strong expertise in Next.js, Experience designing scalable architectures, Experience making technical decisions, Experience with cloud infrastructure, Experience with deployment pipelines, Experience with DevOps practices, Strong understanding of software quality and testing, Experience mentoring developers, Experience leading technical initiatives, Fluent English 📃 Skills: Node.js, Nest.js, React, Next.js, CI/CD, DevOps, Cloud, Testing, JavaScript, TypeScript 🏢 Description: Lead Full Stack Engineer (Node.js / React / Next.js) We are looking for a Lead Full Stack Engineer to drive the technical direction of a modern web platform. In this role, you will combine hands-on development with architecture, technical leadership, and mentoring, helping to build scalable, high-quality solutions while promoting engineering best practices. Responsibilities Design and develop scalable applications using Node.js (Nest.js), React, and Next.js . Define architecture, improve system performance, and support platform scalability. Lead code reviews, promote coding standards, and reduce technical debt. Contribute to CI/CD, deployment processes, and platform reliability. Build and maintain automated testing strategies. Mentor developers and foster knowledge sharing across the team. Leverage AI-powered development tools to improve engineering efficiency and delivery. Requirements 6+ years of experience in Full Stack web development. Strong expertise in Nest.js (Node.js), React, and Next.js . Proven experience designing scalable architectures and making technical decisions. Experience with cloud infrastructure, deployment pipelines, and DevOps practices. Strong understanding of software quality, testing, and engineering best practices. Experience mentoring developers and leading technical initiatives. Fluent English.

🏢 Summary: The role involves developing and maintaining internal platforms and system integrations across HR, recruitment, and corporate operations. It combines backend and frontend development with API design, enterprise system integration, and platform optimization. The engineer will enhance system reliability, scalability, and deployment processes while contributing to architectural decisions. 🗂️ Requirements: 5+ years of software development experience, Experience in system integrations, Proficiency in Java or Python, Experience with frontend technologies, Experience building web applications, Strong API design knowledge, Experience integrating third-party services, Strong SQL knowledge, Experience with relational databases, Experience with Git, Experience with CI/CD pipelines, Ability to troubleshoot production systems 📃 Skills: Java, Python, JavaScript, HTML, CSS, SQL, Git, CI/CD, APIs, REST, SaaS 🏢 Description: Fullstack / Integration Engineer We are looking for an experienced engineer to support the development and evolution of internal platforms and integrations across key business areas such as HR, recruitment, and corporate operations. This role combines application development, systems integration, and platform improvement initiatives. 🔹 Key responsibilities Build and maintain integrations between internal systems and external SaaS solutions Develop and enhance internal applications and corporate-facing web platforms Design APIs and data flows connecting various enterprise systems (HR, finance, recruitment) Improve existing platforms in terms of performance, scalability, and maintainability Work closely with business stakeholders to translate needs into technical solutions Ensure system reliability through monitoring, alerting, and operational best practices Support and optimize deployment processes and development workflows Contribute to architectural decisions and technical standards Share knowledge within the team and support less experienced colleagues 🔹 Requirements 5+ years of experience in software development and system integrations Proficiency in at least one backend language - Java or Python Familiarity with frontend technologies (JavaScript, HTML, CSS or frameworks) Experience building and maintaining web applications (internal and/or external) Strong knowledge of API design and integration with third-party services Solid SQL skills and experience working with relational databases Experience with version control (e.g. Git) and CI/CD practices Ability to troubleshoot production systems and resolve issues effectively Strong communication skills and ability to work with business stakeholders 🔹 Nice to have Experience working with HR or recruitment systems and related SaaS platforms Exposure to platform modernization or system transformation initiatives