Senior Fullstack Engineer

🏢 Summary: Senior Full-Stack Engineer role focused on designing and scaling AI-driven systems powered by LLMs for a virtual agent platform. The position involves building backend services, integrating external APIs, and owning architecture decisions for distributed, high-performance applications. You will contribute directly to LLM-based features, optimize system performance, and support real-time decision-making systems. 🗂️ Requirements: 5+ years of software engineering experience, Experience building production systems, Experience designing scalable distributed applications, Hands-on experience developing or integrating LLM-based products, Experience with RAG pipelines, custom agents, fine-tuning or orchestration frameworks, Strong Python experience, Solid understanding of Linux environments, Experience integrating multiple APIs, Ability to identify and resolve performance bottlenecks 📃 Skills: Python, LLM, RAG, LangChain, LlamaIndex, Linux, APIs, DistributedSystems, Microservices, Performance 🏢 Description: You’ll join as a Senior Full-Stack Engineer with hands-on experience building products powered by LLMs, contributing directly to the development of our AgentSee AI platform. RESPONSIBILITIES Design, build, and scale AI-driven systems that power our virtual agent capabilities (conversational reasoning, retrieval, and automation flows) Develop backend services and data pipelines that integrate multiple APIs (Amadeus, Sabre, internal systems) to support real-time decision-making Collaborate with other teams to ship LLM-based features that deliver measurable impact Own architecture decisions for distributed, high-performance AI applications Continuously improve model performance, reliability, and monitoring frameworks Help define our engineering best practices, guide technical decisions, and mentor other developers within the team REQUIREMENTS 5+ years of experience in software engineering, with a track record of building production systems Strong background in designing scalable, distributed applications 2 Proven hands-on experience developing or integrating products using LLMs (e.g., RAG pipelines, custom agents, fine-tuning, or orchestration frameworks like LangChain/LlamaIndex) Hands-on experience with Python Solid understanding of Linux runtime environments Skilled at identifying and solving performance bottlenecks Excellent collaboration skills with the ability to give and receive constructive feedback Fluent in English, with strong written and verbal communication Proactive, curious, and eager to keep learning NICE TO HAVE Experience with the travel industry (especially GDS APIs like Sabre, Amadeus, or Travelport) Hands-on with Kubernetes, AWS, Terraform, and CI/CD practices Contributions to open-source projects or notable side projects Familiarity with agile methodologies and collaborative product development WHAT DO WE OFFER ON THIS PROJECT? Employment directly through the client. Cooperation based on a B2B. 100% remote work. WHAT DOES THE RECRUITMENT PROCESS LOOK LIKE? Application: Apply and submit your CV. After the application review, the recruiter will contact selected candidates by phone. Screening: Have a conversation with a speedapp recruiter about your experience. Next steps: The speedapp recruiter will explain the recruitment process for the specific position. The speedapp recruiter will stay in touch with you throughout the entire process. ABOUT SPEEDAPP At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch. DO YOU HAVE ANY QUESTIONS? Contact the recruiter responsible for this process directly. Barbara KrawczykJunior IT Delivery Consultantbarbara.krawczyk@speedapp.pl+48 734 469 838

🏢 Summary: Senior Full-Stack Engineer role focused on designing and scaling AI-driven systems powered by LLMs for a virtual agent platform. The position involves building distributed backend services, integrating multiple APIs, and owning architectural decisions for high-performance AI applications. You will develop and optimize LLM-based features, ensuring reliability, scalability, and measurable business impact. 🗂️ Requirements: 5+ years of software engineering experience building production systems, Experience designing scalable distributed applications, Hands-on experience with LLMs (RAG, custom agents, fine-tuning, orchestration frameworks), Strong Python programming skills, Experience building backend services and data pipelines, Experience integrating external APIs, Solid understanding of Linux environments, Experience identifying and resolving performance bottlenecks, Fluent English communication skills 📃 Skills: Python, LLM, RAG, LangChain, LlamaIndex, Linux, API, Kubernetes, AWS, Terraform, CI/CD, Amadeus, Sabre 🏢 Description: You’ll join as a Senior Full-Stack Engineer with hands-on experience building products powered by LLMs, contributing directly to the development of our AgentSee AI platform. RESPONSIBILITIES Design, build, and scale AI-driven systems that power our virtual agent capabilities (conversational reasoning, retrieval, and automation flows) Develop backend services and data pipelines that integrate multiple APIs (Amadeus, Sabre, internal systems) to support real-time decision-making Collaborate with other teams to ship LLM-based features that deliver measurable impact Own architecture decisions for distributed, high-performance AI applications Continuously improve model performance, reliability, and monitoring frameworks Help define our engineering best practices, guide technical decisions, and mentor other developers within the team REQUIREMENTS 5+ years of experience in software engineering, with a track record of building production systems Strong background in designing scalable, distributed applications 2 Proven hands-on experience developing or integrating products using LLMs (e.g., RAG pipelines, custom agents, fine-tuning, or orchestration frameworks like LangChain/LlamaIndex) Hands-on experience with Python Solid understanding of Linux runtime environments Skilled at identifying and solving performance bottlenecks Excellent collaboration skills with the ability to give and receive constructive feedback Fluent in English, with strong written and verbal communication Proactive, curious, and eager to keep learning NICE TO HAVE Experience with the travel industry (especially GDS APIs like Sabre, Amadeus, or Travelport) Hands-on with Kubernetes, AWS, Terraform, and CI/CD practices Contributions to open-source projects or notable side projects Familiarity with agile methodologies and collaborative product development WHAT DO WE OFFER ON THIS PROJECT? Employment directly through the client. Cooperation based on a B2B. 100% remote work. WHAT DOES THE RECRUITMENT PROCESS LOOK LIKE? Application: Apply and submit your CV. After the application review, the recruiter will contact selected candidates by phone. Screening: Have a conversation with a speedapp recruiter about your experience. Next steps: The speedapp recruiter will explain the recruitment process for the specific position. The speedapp recruiter will stay in touch with you throughout the entire process. ABOUT SPEEDAPP At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch. DO YOU HAVE ANY QUESTIONS? Contact the recruiter responsible for this process directly. Barbara KrawczykJunior IT Delivery Consultantbarbara.krawczyk@speedapp.pl+48 734 469 838

🏢 Summary: Senior Java Developer role involving full-cycle development from requirements and architecture to implementation and testing, with a focus on building and maintaining Java-based systems in cloud environments. The position includes developing new functionalities, maintaining existing code, and working with modern frameworks and containerized platforms. Hybrid B2B cooperation with competitive hourly rate and additional benefits. 🗂️ Requirements: Very good knowledge of Java 21, Experience with Hibernate, Experience with Spring, Experience with Spring Boot, Understanding of relational databases (MariaDB), Linux skills (user level or higher), Proficiency with Git, Advanced technical English, Experience with cloud-based architectures, Experience with Kubernetes, Comfortable using AI coding assistants and LLMs 📃 Skills: Java, Hibernate, Spring, SpringBoot, MariaDB, Linux, Git, Kubernetes, AI, LLM 🏢 Description: Join our client's team as a Senior Java Developer! RESPONSIBILITIES Participation in full development cycle: from requirements, specification up to architecture, development and system tests Implementation of new functionalities Maintenance of existing code REQUIREMENTS Very good knowledge of Java 21 Experience with Hibernate and Spring, Spring Boot frameworks Understanding relational databases, especially MariaDB Linux skills on user level or higher Knowledge and ability to work with version control system Git Advanced technical English skills Experience with cloud-based architectures and platforms such as Kubernetes Comfortable using AI tools (coding assistants, LLMs) as part of your daily workflow NICE TO HAVE Experience with making software for telecommunication systems Familiarity with concepts of SDN, Segment Routing, and OpenFlow Operational experience with enterprise-class routers and switches Knowledge of protocols such as IPv4/6, DNS, BGP, DHCP, SR and ZTP Knowledge of automation tools such as Ansible and Terraform Understanding of Linux and K8s networking (e.g. routing, iptables, CNI) WHAT DO WE OFFER ON THIS PROJECT? Cooperation based on a B2B contract and rate: 160-180 PLN/hour Hybrid work from Kraków or Warsaw (1 times a week in the office) The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client. Events and integration meetings, as well as participation in various initiatives, e.g., sports. Access to the benefits offering (medical care, Multisport card) WHAT DOES THE RECRUITMENT PROCESS LOOK LIKE? Application: Apply and submit your CV. After the application review, the recruiter will contact selected candidates by phone. Screening: Have a conversation with a speedapp recruiter about your experience. Next steps: The speedapp recruiter will explain the recruitment process for the specific position. The speedapp recruiter will stay in touch with you throughout the entire process. ABOUT SPEEDAPP At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch. DO YOU HAVE ANY QUESTIONS? Contact the recruiter responsible for this process directly. Karolina Kizowska Senior IT Delivery Consultant karolina.kizowska@speedapp.pl +48 608 487 448

🏢 Summary: B2B role for a Senior Frontend / Fullstack Engineer in an international project focused on modern frontend solutions and architectural transformation. The position involves redesigning a monolithic frontend into a microfrontend architecture and building scalable, reusable application scaffolding. The role includes architectural decision-making and close collaboration with a distributed development team. 🗂️ Requirements: Very good knowledge of React and TypeScript, Proven experience in designing and developing frontend applications, Experience in frontend architecture and technical decision-making, Ability to work in an international environment, English proficiency for professional communication, Willingness to mentor and support other developers, High level of autonomy and ownership 📃 Skills: React, TypeScript, JavaScript, Microfrontends, Next.js, AtomicDesign, ServerDrivenUI, HTML, CSS, Architecture 🏢 Description: Poszukujemy Senior Frontend / Fullstack Engineera do projektu z obszaru nowoczesnych rozwiązań frontendowych, realizowanego dla międzynarodowego klienta. Rola zakłada ścisłą współpracę z zespołem developerskim oraz Delivery Managerem pełniącym rolę Product Ownera. Szukamy osoby z dużym poczuciem ownershipu, która dobrze odnajduje się w projektowaniu architektury i podejmowaniu decyzji technicznych. ZADANIA Projektowanie i przebudowa aplikacji frontendowej z monolitu do architektury mikrofrontendów Budowa skalowalnego i wielokrotnego użytku scaffoldu dla aplikacji biznesowych Tworzenie skalowalnych i reużywalnych komponentów Podejmowanie decyzji architektonicznych Współpraca z zespołem developerskim i interesariuszami Mentoring i dzielenie się wiedzą z zespołem WYMAGANIA Bardzo dobra znajomość React i TypeScript Doświadczenie w projektowaniu i rozwijaniu aplikacji frontendowych Umiejętność pracy w środowisku międzynarodowym i komunikacji w języku angielskim Gotowość do mentoringu i wspierania zespołu Samodzielność oraz poczucie odpowiedzialności za dostarczane rozwiązania MILE WIDZIANE Doświadczenie z architekturą mikrofrontendów Znajomość podejścia server-driven UI Doświadczenie z Next.js Znajomość metodologii Atomic Design CO OFERUJEMY NA TYM PROJEKCIE? Współpracę w oparciu o umowę B2B i stawkę: 140-160 zł/h Pracę 100% zdalną Sporadyczne wizyty w biurze w Berlinie (maks. 1x na kwartał, w całości opłacane) Wsparcie dedykowanego opiekuna. Po dołączeniu do speedapp, otrzymasz kontakt do dedykowanego opiekuna, który zadba, aby współpraca z nami oraz z klientem sprawiała Ci satysfakcję. Wydarzenia oraz spotkania integracyjne, a także udział w różnych inicjatywach np. sportowych. Dostęp do oferty benefitów (opieka medyczna, ubezpieczenie na życie, karta Multisport). JAK WYGLĄDA REKRUTACJA? Zgłoszenie : Zaaplikuj i prześlij swoje CV. Po weryfikacji aplikacji rekruter skontaktuje się telefonicznie z wybranymi kandydatami. Screening : Porozmawiaj z rekruterem speedapp o Twoim doświadczeniu . Kolejne etapy: Rekruter speedapp przedstawi Ci jak wygląda proces rekrutacji na dane stanowisko. Rekruter speedapp pozostanie z Tobą w kontakcie podczas całego procesu. O SPEEDAPP W speedapp wierzymy, że organizacja jest tak dobra jak tworzący ją ludzie. Jesteśmy zespołem ekspertów IT i innych specjalistów pracujących dla naszych klientów na całym świecie (m.in Izrael, Austria, USA). Wykraczamy daleko poza kategorię HR. Budujemy zespoły IT, a także pomagamy w ich zarządzaniu. 👉 10 lat doświadczenia 👉 +100 klientów na całym świecie +300 zatrudnień rocznie 💎 Jesteśmy laureatem prestiżowej nagrody Diamenty Forbes cztery lata z rzędu (2022, 2023, 2024, 2025), członkiem sieci Fast Growth Icons oraz FinTech Poland. MASZ PYTANIA? Skontaktuj się bezpośrednio z rekruterem odpowiedzialnym za ten proces. Iga Olszewska-Magnowska Senior IT Delivery Consultant iga.olszewska@speedapp.pl

🏢 Summary: Senior Full-Stack Engineer role focused on designing and evolving scalable SaaS systems using Node.js and React in a 100% remote B2B model. The position involves architectural decision-making, production system ownership, performance optimization, and mentoring within a distributed team. The offer targets experienced engineers capable of leading technical initiatives and ensuring system reliability at scale. 🗂️ Requirements: Minimum 10 years of professional software development experience, Proven experience with SaaS-based systems, Strong knowledge of scalable systems and software architecture, Hands-on experience with Node.js, Hands-on experience with React, Experience designing or evolving system architectures, Experience working with production systems and real users, Experience with monitoring, debugging, and performance optimization, Ability to own major system components and lead technical decisions, Excellent English proficiency 📃 Skills: Node.js, React, JavaScript, SaaS, AWS, GCP, Azure, CI/CD, DevOps, Architecture, Monitoring, Debugging, Performance, Scalability 🏢 Description: For a client, we are looking for a Senior Full-Stack Engineer (NodeJS + React)! Salary: 24 000-27 000 net+VAT B2B 100% remote RESPONSIBILITIES Architecture, production, and reliability experience: Proven experience designing systems from scratch or significantly evolving existing architectures Experience working on production systems with real users Strong understanding of architectural trade-offs (performance, scalability, cost, and maintainability) Experience with monitoring, debugging, and performance optimization in production environments Familiarity with handling production issues and incidents Ownership and leadership: Experience owning major system components or leading technical decisions Ability to work independently with minimal supervision Experience mentoring junior or mid-level developers and collaborating within a team REQUIREMENTS At least 10 years of professional software development experience Proven experience working with SaaS-based systems Strong understanding of scalable systems and software architecture Hands-on experience with Node.js and React Excellent English proficiency and strong communication skills NICE TO HAVE Experience with cloud platforms such as AWS, GCP, or Azure Familiarity with CI/CD pipelines and modern DevOps practices Experience working in distributed or remote teams Product mindset — ability to understand business requirements and translate them into technical solution WHAT DO WE OFFER ON THIS PROJECT? Cooperation based on a B2B contract and rate: 24 000-27 000 PLN/hour 100% remote work The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client. Events and integration meetings, as well as participation in various initiatives, e.g., sports. Access to the benefits offering (medical care, life insurance, Multisport card). WHAT DOES THE RECRUITMENT PROCESS LOOK LIKE? Application: Apply and submit your CV. After the application review, the recruiter will contact selected candidates by phone. Screening: Have a conversation with a speedapp recruiter about your experience. Next steps: The speedapp recruiter will explain the recruitment process for the specific position. The speedapp recruiter will stay in touch with you throughout the entire process. ABOUT SPEEDAPP At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch. DO YOU HAVE ANY QUESTIONS? Contact the recruiter responsible for this process directly. Iga Olszewska-Magnowska Senior IT Delivery Consultant iga.olszewska@speedapp.pl

🏢 Summary: Seeking a Senior Full-Stack Engineer (NodeJS + React) to design, evolve, and maintain scalable SaaS systems in a fully remote B2B engagement. The role focuses on architecture, production reliability, and technical ownership of key system components. You will work on real-user production systems, ensuring performance, scalability, and maintainability. 🗂️ Requirements: Minimum 10 years of professional software development experience, Proven experience with SaaS-based systems, Strong knowledge of scalable systems and software architecture, Hands-on experience with Node.js, Hands-on experience with React, Experience designing or evolving system architectures, Experience working with production systems, Experience with monitoring, debugging, and performance optimization, Fluent English proficiency 📃 Skills: Node.js, React, JavaScript, SaaS, Architecture, Scalability, Monitoring, Debugging, CI/CD, AWS, GCP, Azure 🏢 Description: For a client, we are looking for a Senior Full-Stack Engineer (NodeJS + React)! Salary: 24 000-27 000 net+VAT B2B 100% remote RESPONSIBILITIES Architecture, production, and reliability experience: Proven experience designing systems from scratch or significantly evolving existing architectures Experience working on production systems with real users Strong understanding of architectural trade-offs (performance, scalability, cost, and maintainability) Experience with monitoring, debugging, and performance optimization in production environments Familiarity with handling production issues and incidents Ownership and leadership: Experience owning major system components or leading technical decisions Ability to work independently with minimal supervision Experience mentoring junior or mid-level developers and collaborating within a team REQUIREMENTS At least 10 years of professional software development experience Proven experience working with SaaS-based systems Strong understanding of scalable systems and software architecture Hands-on experience with Node.js and React Excellent English proficiency and strong communication skills NICE TO HAVE Experience with cloud platforms such as AWS, GCP, or Azure Familiarity with CI/CD pipelines and modern DevOps practices Experience working in distributed or remote teams Product mindset — ability to understand business requirements and translate them into technical solution WHAT DO WE OFFER ON THIS PROJECT? Cooperation based on a B2B contract and rate: 24 000-27 000 PLN/hour 100% remote work The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client. Events and integration meetings, as well as participation in various initiatives, e.g., sports. Access to the benefits offering (medical care, life insurance, Multisport card). WHAT DOES THE RECRUITMENT PROCESS LOOK LIKE? Application: Apply and submit your CV. After the application review, the recruiter will contact selected candidates by phone. Screening: Have a conversation with a speedapp recruiter about your experience. Next steps: The speedapp recruiter will explain the recruitment process for the specific position. The speedapp recruiter will stay in touch with you throughout the entire process. ABOUT SPEEDAPP At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch. DO YOU HAVE ANY QUESTIONS? Contact the recruiter responsible for this process directly. Iga Olszewska-Magnowska Senior IT Delivery Consultant iga.olszewska@speedapp.pl

🏢 Summary: Senior Fullstack Engineer role focused on building and scaling an AI-powered drive-thru platform for a QSR client. The position involves developing integrations with POS systems and digital menu boards, building data pipelines, and leading end-to-end integration projects in production environments. The engineer will also troubleshoot complex issues and drive technical delivery in a cloud-based ecosystem. 🗂️ Requirements: 7+ years experience in Python and JavaScript, Strong backend development skills, Strong software architecture skills, Experience delivering and deploying production projects, Proficiency with Async IO, Experience with React and Redux (RTK), Experience with CI/CD pipelines, Experience with cloud platforms (AWS/GCP/Azure), Experience with Linux environments, Experience with Docker and Kubernetes, Experience with 3rd party API integrations, Experience building Data Pipelines and ETL processes, BSc in Software Development or equivalent experience, 1+ year of technical leadership experience 📃 Skills: Python, JavaScript, React, Redux, CSS, AsyncIO, CI/CD, AWS, GCP, Azure, Linux, Docker, Kubernetes, APIs, ETL, SQL 🏢 Description: Join a QSR client as a Senior Fullstack Engineer and help develop an AI drive-thru platform that scales faster, smarter, and more accurately. RESPONSIBILITIES In this role, you will: Integrate with new POS systems and digital menu boards Build data pipelines to process restaurant menus Support existing integrations and pipelines Debug and solve complex customer issues Lead communication with integration partners to deliver the integrations Estimate, plan and deliver the integration projects Handle a large set of complex and diverse customer issues Create documentation for integrations REQUIREMENTS 7+ years experience in Python and JavaScript Strong backend development and software architecture skills Experience in developing and deploying multiple projects used in production Proficient with Async IO Experience with React, Redux (RTK), CSS modules Experience with CI/CD, Clouds (AWS/GCP/Azure), Linux, Docker, Kubernetes, 3rd Party API integrations Experience with Data Pipelines, ETL Prior experience working in startups BSc in Software Development or equivalent industry experience 1+ years of experience in technical leadership WHAT DO WE OFFER ON THIS PROJECT? Cooperation based on a B2B contract. 100% remote work. The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client. Events and integration meetings, as well as participation in various initiatives, e.g., sports. Access to the benefits offering (medical care, life insurance, Multisport card). WHAT DOES THE RECRUITMENT PROCESS LOOK LIKE? Application: Apply and submit your CV. After the application review, the recruiter will contact selected candidates by phone. Screening: Have a conversation with a speedapp recruiter about your experience. Next steps: The speedapp recruiter will explain the recruitment process for the specific position. The speedapp recruiter will stay in touch with you throughout the entire process. ABOUT SPEEDAPP At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch. DO YOU HAVE ANY QUESTIONS? Contact the recruiter responsible for this process directly. Barbara Krawczyk Junior IT Delivery Consultant barbara.krawczyk@speedapp.pl +48 734 469 838

🏢 Summary: Senior Frontend Developer role focused on building and maintaining complex cloud-based web applications for network configuration, monitoring, and optimization. The position involves developing new features, maintaining a custom UI component library, and contributing to code and UX reviews within a global team. Hybrid work model with long-term B2B cooperation. 🗂️ Requirements: 5+ years experience building complex web applications, Strong knowledge of JavaScript, Strong knowledge of TypeScript, Strong knowledge of HTML5, Strong knowledge of CSS3, Experience with React, Experience with Redux, Experience with Redux Toolkit, Experience writing well-tested maintainable code, Experience with REST API integration, Proficient English communication skills 📃 Skills: JavaScript, TypeScript, HTML5, CSS3, React, Redux, ReduxToolkit, REST, Cypress, ReactTestingLibrary, Webpack, Lerna, Storybook, Cytoscape, ChartJS, MapLibre 🏢 Description: For a client, we are looking for a Senior Frontend Developer Salary: 150-170 net+VAT B2B Hybrid model: 1 day per week from the office in Warsaw or Kraków RESPONSIBILITIES About our Team As a team member, you will have the possibility to participate in the whole development process in Network Cloud Team projects. The primary objective of our applications is to set up, configure, monitor, and optimize servers and networks for clients globally. Working in our team allows you to learn various network automation techniques, be part of and create a mobile network future, develop cloud-based applications and have a real impact on how it will look like. Role and Responsibilities Develop new features, as well as maintain existing ones. Implementation and maintenance of custom UI components library. Participate in code review, as well as UX design review. Cooperation with colleagues from other Centers around the world. REQUIREMENTS 5+ years of experience building complex web applications using JavaScript, TypeScript, HTML5, CSS3. Experience with React, Redux and Redux Toolkit; Familiarity writing well-tested, maintainable code (knowledge of Cypress.io and React Testing Library is a plus). Familiarity with REST API integration Proficient English communication skills. NICE TO HAVE Experience with Webpack; Experience with Lerna or other mono-repo solutions; Experience with Storybook and component libraries development; Experience with data visualization (knowledge of Cytoscape.js, react-chartjs-2, maplibre or similar libraries is a plus); WHAT DO WE OFFER ON THIS PROJECT? Cooperation based on a B2B contract and rate: 150-170 PLN/hour Hybrid work from Warsaw or Cracow (1 times a week in the office) The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client. Events and integration meetings, as well as participation in various initiatives, e.g., sports. Access to the benefits offering (medical care, life insurance, Multisport card). WHAT DOES THE RECRUITMENT PROCESS LOOK LIKE? Application: Apply and submit your CV. After the application review, the recruiter will contact selected candidates by phone. Screening: Have a conversation with a speedapp recruiter about your experience. Next steps: The speedapp recruiter will explain the recruitment process for the specific position. The speedapp recruiter will stay in touch with you throughout the entire process. ABOUT SPEEDAPP At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch. DO YOU HAVE ANY QUESTIONS? Contact the recruiter responsible for this process directly. Iga Olszewska-Magnowska Senior IT Delivery Consultant iga.olszewska@speedapp.pl

🏢 Summary: Senior Full-Stack Engineer role with a 50/50 backend and frontend focus, building scalable microservices-based applications using ASP.NET (C#) and React with TypeScript in a cloud-native environment. The position involves designing and maintaining REST APIs, developing responsive user interfaces, ensuring high test coverage, and contributing to architectural decisions with strong technical ownership. Poland-based employment (Umowa o Pracę) with remote flexibility and quarterly in-person collaboration. 🗂️ Requirements: MSc+ in Computer Science or equivalent, Minimum 5 years experience with ASP.NET and C#, Minimum 5 years experience building REST APIs, Minimum 5 years experience with React, Experience with TypeScript, Strong knowledge of microservices architecture, Knowledge of cloud design patterns, Experience with unit, integration, and end-to-end testing, High level of technical ownership, Fluent English (minimum B2), Poland residency 📃 Skills: ASP.NET, C#, REST, React, TypeScript, Microservices, AWS, Agile, DDD, UnitTesting, IntegrationTesting, E2ETesting, Cloud 🏢 Description: We’re looking for a Senior Full-Stack Engineer who brings deep technical expertise and a collaborative mindset to our product development team. You will work with a modern microservices architecture, building scalable backend services using the ASP.NET Web API with C#, and intuitive frontend interfaces using mainly React and TypeScript. This is a hands-on engineering role with a 50/50 front-/backend focus, ideal for someone who likes to take ownership, thrives in a dynamic product team, and enjoys mentoring others. This role could easily become a Tech Lead role in a foreseeable future. If you're passionate about designing high-impact software in a cloud-native environment, we’d love to hear from you. This Poland-based role offers remote flexibility, but we value in-person collaboration. Our team meets in Poland for at least one week each quarter, so we request all applicants to be located in Poland. This is not a globally remote role. Poland residency is required. The contract form is Umowa o Pracę (only, no B2B). What you will be responsible for Collaborate proactively in refinement sessions with product and tech teams to ensure clarity and feasibility of features. Design, implement, and maintain scalable web APIs using ASP.NET and microservices architecture principles. Develop responsive user interfaces with React and TypeScript that enhance usability and performance. Work closely with Product Owners to clarify feature requirements and ensure business context is well-understood. Define, design and align feature architecture with the Head of Engineering to ensure consistency and scalability. Ensure features meet Definition of Done, with state-of-the-art unit, integration, and end-to-end test coverage. Support incident response and production issue resolution as per team standards. Actively contribute to team knowledge sharing and coach colleagues in technical best practices. What makes you a match Essential Qualifications: MSc+ in Computer Science or equivalent 5 years of proven experience in building secure REST APIs using ASP.NET , as well as developing solid front-end applications with React are non-negotiable must haves. Comprehensive knowledge of contemporary web application architectures, with a focus on microservices and cloud design patterns. Demonstrated ability of high technical Ownership and Tech Leadership are a requirement for this role. Bonus Skills: Hands-on experience with AWS infrastructure. Experience working in cross-functional product teams using Agile practices and following Domain-Driven Design (DDD). Collaboration and Interpersonal Skills: Clear and adaptive communication with both technical and non-technical stakeholders. Strong sense of ownership, accountability, and proactive problem-solving. Languages: English: B2 - (No certificate required, but Fluency) German, Polish, Ukrainian: desired, not required What you can expect A dynamic, ambitious team where your voice is heard, and your contributions truly matter. You’ll have real ownership over your decisions in a trusted, cross-functional environment within a Swiss product company that puts people first. We offer fair compensation, flexible working hours, a hybrid work setup, and a culture that supports both personal and professional growth, fostering a healthy work-life balance. Employer of Record: For this role, we offer employment through our trusted Employer of Record provider Remote.com , ensuring full legal compliance and a seamless experience for our team members in Poland. ID Verification: To maintain a fair and secure hiring process, candidates may be asked to verify their identity their identity before speaking with our Recruiter. This step helps us prevent fraud and focus our resources on genuine applicants. About us Who we are esurance is a Swiss InsurTech offering a SaaS platform that connects SMEs, insurance providers, brokers, and business application providers. Founded in 2013, we're on a mission to make health insurance for small businesses truly hassle-free. What makes us unique You'll be part of a connected, forward-thinking team built on trust, openness, and mutual respect — working hybrid from Zürich or remotely across Europe. We invest in your growth through agile practices, real ownership, and a transparent Grading System that ensures fair pay and clear career paths. Our core values We are connected. We are ahead. We are clear. We are approachable. Do these resonate with you? → Come join us. Our Recruitment Process & Principles We keep our process transparent and respect your time: Application Review — You hear from us within 5 business days. Always. Recruiter Screen — A relaxed Get2Know call to explore mutual fit. Four Interviews — Two Role Knowledge interviews (peer + supervisor), one Culture Match, one Leadership conversation. Batched into two days wherever possible. Hiring Decision — Thoughtful, timely. You'll know within 1–2 weeks. Use of Artificial Intelligence (AI) We use AI to increase productivity and you're welcome to use it to polish your CV or Coverletter. Interviews and assessments should reflect your genuine self, though. Recruiting Agencies: We don't work with unsolicited agency submissions. Thanks for respecting this.

🏢 Summary: Offer for a Senior Fullstack Developer to design, develop, and maintain key distributed systems in the financial sector using .NET and React technologies. The role involves working in a Scrum team, contributing to architectural decisions, and building scalable cloud-based solutions with modern DevOps practices. 🗂️ Requirements: Higher education in Computer Science or technical field, Minimum 7 years of commercial experience in C# and .NET Core / ASP.NET, Very good knowledge of relational databases and SQL, Experience in designing and building distributed systems, Experience with asynchronous communication (RabbitMQ or Azure Service Bus), Experience in frontend development with React and JavaScript / TypeScript / HTML / CSS, Experience with Git and GitHub, Experience with ORM (NHibernate or Entity Framework / EF Core), Experience with message bus frameworks (MassTransit or NServiceBus), Experience in writing automated tests (unit, integration, e2e), Experience with CI/CD and build automation, Experience with Azure cloud, Experience with Docker and Kubernetes with Helm, English proficiency for working with documentation and vendors 📃 Skills: C#, .NET, ASP.NET, SQL, RabbitMQ, Azure, React, JavaScript, TypeScript, HTML, CSS, Git, GitHub, NHibernate, EntityFramework, MassTransit, NServiceBus, CI/CD, Docker, Kubernetes, Helm 🏢 Description: Dla klienta z branży finansowej poszukujemy Senior Fullstack Developera! ZADANIA Rozwijanie i utrzymywanie kluczowych systemów klienta, wykorzystywanych w całej organizacji Projektowanie i implementacja rozwiązań opartych o architekturę rozproszoną Praca w Scrumowym zespole developerskim: planowanie, estymacje, proponowanie rozwiązań, demo i ulepszanie produktów Współtworzenie standardów technicznych (nie tylko kodowanie) Dzielenie się wiedzą i dobrymi praktykami z innymi developerami WYMAGANIA Wykształcenie wyższe informatyczne lub techniczne Minimum 7 lat doświadczenia komercyjnego w tworzeniu aplikacji w C# (.NET Core / ASP.NET) Bardzo dobra znajomość relacyjnych baz danych i SQL Doświadczenie w projektowaniu i budowie systemów rozproszonych Doświadczenie w implementacji komunikacji asynchronicznej (np. RabbitMQ, Azure Service Bus) Doświadczenie w tworzeniu frontendów aplikacji webowych (React.js, JavaScript / TypeScript / HTML / CSS) Doświadczenie w pracy z Git / GitHub Doświadczenie z ORM (NHibernate, Entity Framework / EF Core) Znajomość narzędzi do obsługi szyn komunikatów (MassTransit, NServiceBus) Doświadczenie w pisaniu testów automatycznych (unit, integration, e2e – także UI) Doświadczenie z CI/CD i automatyzacją buildów Doświadczenie w pracy z chmurą Azure Doświadczenie w pracy Dockerem i Kubernetes (z Helm) Umiejętność samodzielnego i kreatywnego rozwiązywania problemów Znajomość języka angielskiego umożliwiającej pracę z dokumentacją i kontakt z dostawcami MILE WIDZIANE CO OFERUJEMY NA TYM PROJEKCIE? Współpracę w oparciu o umowę B2B i stawkę: 150-170 zł/h netto+VAT Pracę hybrydową z Warszawy (min. raz na 2 tygodnie spotkanie w biurze) Wsparcie dedykowanego opiekuna. Po dołączeniu do speedapp, otrzymasz kontakt do dedykowanego opiekuna, który zadba, aby współpraca z nami oraz z klientem sprawiała Ci satysfakcję Wydarzenia oraz spotkania integracyjne, a także udział w różnych inicjatywach np. sportowych Dostęp do oferty benefitów (opieka medyczna, ubezpieczenie na życie, karta Multisport) JAK WYGLĄDA REKRUTACJA? Zgłoszenie : Zaaplikuj i prześlij swoje CV. Po weryfikacji aplikacji rekruter skontaktuje się telefonicznie z wybranymi kandydatami. Screening : Porozmawiaj z rekruterem speedapp o Twoim doświadczeniu . Kolejne etapy: Rekruter speedapp przedstawi Ci jak wygląda proces rekrutacji na dane stanowisko. Rekruter speedapp pozostanie z Tobą w kontakcie podczas całego procesu. O SPEEDAPP W speedapp wierzymy, że organizacja jest tak dobra jak tworzący ją ludzie. Jesteśmy zespołem ekspertów IT i innych specjalistów pracujących dla naszych klientów na całym świecie (m.in Izrael, Austria, USA). Wykraczamy daleko poza kategorię HR. Budujemy zespoły IT, a także pomagamy w ich zarządzaniu. 👉 10 lat doświadczenia 👉 +100 klientów na całym świecie +300 zatrudnień rocznie 💎 Jesteśmy laureatem prestiżowej nagrody Diamenty Forbes cztery lata z rzędu (2022, 2023, 2024, 2025), członkiem sieci Fast Growth Icons oraz FinTech Poland. MASZ PYTANIA? Skontaktuj się bezpośrednio z rekruterem odpowiedzialnym za ten proces. Karolina Kizowska Senior IT Delivery Consultant karolina.kizowska@speedapp.pl +48 608 487 448