Backend Engineer

🏢 Summary: Senior Backend Engineer role focused on designing and delivering scalable, production-ready software using Node.js and AWS. The position involves leading development of complex solutions, ensuring high performance, reliability, and security, and integrating monitoring and testing practices. The engineer collaborates in agile teams to translate product requirements into resilient cloud-based applications. 🗂️ Requirements: Strong experience with Node.js and TypeScript, Proficiency with AWS services (Lambda, SNS/SQS, API Gateway, CDK), Experience with TDD and QA best practices, Ability to design and build highly scalable applications, Experience with monitoring, performance, scalability, and security, Experience conducting code reviews and delivering production-ready code, Ability to integrate monitoring and support tools, Experience contributing to test frameworks 📃 Skills: Node.js, TypeScript, AWS, Lambda, SNS, SQS, API Gateway, CDK, TDD, QA, Monitoring, Scalability, Security, Agile 🏢 Description: We are looking for a Senior Backend Engineer (Node.js / AWS) who: Has strong experience with TDD and solid understanding of QA best practices. Can handle operational challenges : monitoring, performance, scalability, availability, resilience, and security. Translates product requirements into reliable, scalable software . Has excellent development skills and experience building highly scalable applications . Is proficient in Node.js, TypeScript , and AWS services like Lambda, SNS/SQS, API Gateway , and CDK . What you’ll do: Lead development of complex software solutions. Conduct code reviews and deliver production-ready code . Integrate software with monitoring/support tools . Collaborate with architects and technical leads, participate in agile processes . Contribute to test frameworks , troubleshoot issues, and ensure smooth team collaboration.

🏢 Summary: Senior Back-End Developer role focused on building and maintaining scalable backend services using Node.js and AWS. The position involves designing complex GraphQL APIs, implementing serverless architectures, and optimizing performance and security. You will also contribute to CI/CD automation and technical best practices. 🗂️ Requirements: 5–7 years of Back-End development experience, Strong proficiency in JavaScript, Strong proficiency in Node.js, Solid experience with AWS, 3–4 years of experience with GraphQL, Experience with GitLab, Experience managing CI/CD pipelines, Operational/technical level of English 📃 Skills: JavaScript, Node.js, AWS, GraphQL, GitLab, CI/CD, Lambda, Serverless 🏢 Description: Nous recherchons un Développeur Senior Back-End avec une expertise en Node.js et AWS. Le candidat idéal aura une solide expérience en développement d APIs, en architecture serverless et en optimisation de performance. Vous participerez à la conception et à la mise en oeuvre de solutions innovantes tout en assurant la qualité et la sécurité des applications. Vos missions: Concevoir, développer et maintenir des services backend en Node.js / JavaScript. Participer à la mise en oeuvre et à l'évolution des architectures BFF et des agrégateurs d'APIs. Concevoir et maintenir des APIs GraphQL complexes. Gérer les problématiques de performance, de sécurité et de complexité GraphQL. Développer et déployer des composants serverless sur AWS Lambda. Participer à l'automatisation des déploiements et à l'amélioration continue des processus CI/CD. Intervenir sur les pipelines GitLab CI/CD et les processus de livraison. Contribuer aux choix techniques et aux bonnes pratiques de développement. Votre profil: 5 à 7 ans d'expérience en développement Back-End. Excellente maîtrise de JavaScript / Node.js. Solide expérience sur AWS. Très bonne maîtrise de GraphQL avec au moins 3 à 4 ans d'expérience. Expérience des outils GitLab et de la gestion des pipelines CI/CD. Niveau d’anglais opérationnel / technique.

🏢 Summary: Fully remote Senior Node.js Backend Engineer role focused on building and scaling cloud-native microservices in a serverless AWS environment. The position involves designing high-performance REST APIs, provisioning infrastructure with Terraform, and optimizing distributed systems for scalability and resilience. You will contribute to CI/CD pipelines and ensure robust, production-grade backend services. 🗂️ Requirements: 4+ years of professional experience in Node.js server-side development, 2+ years of experience in system and data integration, transformation, and validation, Strong experience designing and deploying REST APIs, Hands-on experience with Terraform for AWS infrastructure provisioning, Practical experience with AWS services: Lambda, SQS, CloudWatch, S3, Deep understanding of distributed systems, scalability, and failure handling, Experience with CI/CD pipelines and GitHub Actions, Proficiency with shell scripting and Linux command-line tools 📃 Skills: Node.js, AWS, Lambda, SQS, CloudWatch, S3, Terraform, REST, CICD, GitHubActions, Shell, Linux, DistributedSystems, DynamoDB, DocumentDB, Streaming 🏢 Description: Ignite innovation at the forefront of cloud-native backend development — shape scalable microservices for dynamic digital ecosystems. Fully-remote opportunity! As a Senior Node.js Backend Engineer , you will be working for our client, a leading technology-driven organization dedicated to building resilient distributed systems that power tomorrow's digital experiences. You will contribute to designing and implementing high-performance microservices on AWS, enhancing system robustness, scalability, and flexibility. Join us and be part of pioneering solutions that redefine industry standards and accelerate your career growth. Your main responsibilities: Develop and maintain REST-like APIs and backend services using Node.js in a serverless AWS environment Design, implement, and optimize infrastructure-as-code configurations with Terraform for AWS services such as Lambda, SQS, CloudWatch, and S3 Integrate complex data streams, transform, validate, and analyze data within distributed systems Collaborate with cross-functional teams to ensure system robustness, scalability, and failure resilience Contribute to CI/CD pipelines utilizing GitHub Actions, and enforce best practices in version control Troubleshoot and resolve operational issues within AWS infrastructure and backend services Maintain comprehensive documentation and ensure high-quality code standards You're ideal for this role if you have: At least 4 years of professional experience in Node.js server-side development 2+ years of experience in system/data integration, transformation, and validation Deep understanding of distributed systems, including scalability, elasticity, replication, and failure handling Strong experience designing and deploying REST-like APIs Hands-on experience with Terraform for AWS infrastructure provisioning Practical knowledge of serverless AWS services: Lambda, SQS, CloudWatch, S3 Solid grasp of GitHub tool suite, CICD pipelines, and shell scripting Good command of Linux command line tools Excellent communication skills in English Problem-solving mentality with a focus on business impact It is a strong plus if you have: Experience with DynamoDB, DocumentDB, and Streaming services Language Required for the role: Fluent English Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. We offer you At ITDS , you will work on innovative and impactful technology projects for international companies across multiple industries in Europe and beyond. We create an environment for ambitious, driven professionals who want to grow, deliver value, and build their careers in modern IT and digital transformation. Our offer includes: Stable and long-term cooperation with attractive conditions Opportunities to develop your technical expertise across various industries and technologies The chance to work on high-impact, strategic IT and digital transformation projects A clear career path and the opportunity to grow quickly by contributing to diverse client initiatives over time International environment , knowledge sharing, social events, and training opportunities Access to an attractive medical package Access to the Multisport program Access to learning platforms such as Pluralsight Flexible working hours and remote work options #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data. # 8942

🏢 Summary: B2B contract role for a Mid/Senior Node.js Developer focused on building and maintaining backend systems such as SaaS platforms, cloud-native applications, microservices, and event-driven architectures. The position involves architectural decision-making, backend development, and close collaboration with QA and DevOps in international projects. Candidates will work with modern cloud environments and have real impact on system design and product development. 🗂️ Requirements: 4+ years of backend development experience, Strong knowledge of Node.js, Experience with TypeScript or JavaScript, Experience with SQL databases, Experience with NoSQL databases, Understanding of microservices architecture, Understanding of serverless architecture, Understanding of event-driven systems, Hands-on experience with GCP, AWS, or Azure, Ability to write clean and maintainable code, Experience with unit and integration testing, English level minimum B2 📃 Skills: Node.js, TypeScript, JavaScript, SQL, NoSQL, GCP, AWS, Azure, REST, Docker, Microservices, Serverless, Testing 🏢 Description: We are a software house delivering long-term projects for international clients , and we are looking for Mid / Senior Node.js Developers to join our team on a B2B contract . You will work on various backend-focused projects , such as SaaS platforms, cloud-native systems, microservices, and event-driven architectures. We match projects to your experience and technical preferences, and you will have a real impact on architecture and product development. Responsibilities design, develop, and maintain backend services using Node.js (TypeScript / JavaScript) implement new features and improve existing functionalities participate in technical and architectural decision-making refactor and optimize key components of the system ensure code quality through clean code practices and testing collaborate closely with developers, QA, and DevOps engineers Requirements 4+ years of experience in backend development strong knowledge of Node.js (TypeScript / JavaScript) experience with SQL and NoSQL databases good understanding of cloud-based architectures (microservices, serverless, event-driven systems) hands-on experience with at least one cloud provider ( GCP, AWS, or Azure ) ability to write clean, well-structured, and maintainable code proactive mindset and willingness to grow technically good communication skills and English level min. B2B Example Tech Stack (depends on the project) Node.js / TypeScript Cloud platforms: GCP, Azure or AWS REST APIs & asynchronous communication SQL & NoSQL databases Docker Unit and integration testing

🏢 Summary: Senior Backend Engineer role focused on building and maintaining scalable backend systems using NodeJs, Python, MongoDB, MQTT, and AWS. The position involves full lifecycle development, API and system design, code quality improvements, mentoring junior engineers, and contributing to technical strategy. Candidates should have strong backend engineering experience, testing knowledge, and familiarity with CI/CD and monitoring practices. 🗂️ Requirements: 4+ years of professional experience with NodeJs, 4+ years of professional experience with Python, 4+ years of professional experience with MongoDB, 4+ years of professional experience with MQTT, 4+ years of professional experience with AWS, Backend development experience, Experience building web applications and APIs, Ability to write clean, maintainable code, Knowledge of SOLID principles, Experience with testing strategies and implementations, System design experience from ambiguous requirements, Understanding of CI/CD practices, Experience with logging and monitoring tools, Knowledge of version control best practices 📃 Skills: NodeJs, Python, MongoDB, MQTT, AWS, Go, APIs, CI/CD, SOLID, Git, Testing, Monitoring, Logging 🏢 Description: Introduction & Summary: We are seeking an experienced Senior Backend Engineer who will be responsible for building and maintaining robust backend systems. The ideal candidate will possess a strong background in backend development, particularly with NodeJs, Python, MongoDB, MQTT, and AWS. A proactive problem-solver with a focus on clean, maintainable code and system design will thrive in this role. Main Responsibilities: Participate in all stages of the development and post-development lifecycle Proactively provide creative, thorough, and practical solutions to technical problems Design, write, and maintain well-organized, scalable, and testable code Identify and address issues and bottlenecks, advocating for changes Promote best practices and code quality within the team Contribute to refining technical vision and aligning it with business objectives Mentor and guide junior engineers Key Requirements: Hands-on experience in backend development and engineering At least 4 years of professional experience with NodeJs, Python, MongoDB, MQTT, and AWS Experience with GO is advantageous Proven experience in building web applications and APIs Ability to write clean, maintainable code and apply SOLID principles Experience with various testing strategies and implementations Capability to design systems from ambiguous product requirements Understanding of continuous integration and delivery Proficiency with logging and monitoring tools Knowledge of version control best practices Proactive mindset emphasizing continuous improvement and learning Nice to Have: Strong problem-solving skills and critical thinking regarding technical challenges Flexibility and willingness to adapt to changing priorities and technologies Other Details: This role offers a dynamic work environment with opportunities for growth and development. Ideal candidates will commit to excellence and a proactive approach in their work.

🏢 Summary: Senior Node.js Developer role focused on building and scaling the backend API layer of an IoT platform for monitoring and optimizing energy usage in buildings. The position involves developing distributed backend systems using TypeScript, Node.js, and Kubernetes, and integrating with IoT devices and analytics modules. The role requires delivering high‑performance, scalable solutions in a cloud-based environment. 🗂️ Requirements: Minimum 5 years of commercial backend development experience, Strong knowledge of Node.js, Strong knowledge of TypeScript, Understanding of distributed systems, Experience with scalable backend design, Experience with containerized or cloud environments, Experience with Kubernetes, Ability to work in Agile environment, Fluency in English, Residing in Poland 📃 Skills: Node.js, TypeScript, Kubernetes, IoT, APIs, Backend, Cloud, DistributedSystems, Agile 🏢 Description: We are looking for a Senior Node.js Developer to join a project for a leading global energy‑tech company. You will help build an intelligent platform used to monitor and optimize energy usage in buildings. The work combines backend development, IoT integration, and modern cloud technologies. Your tasks Develop backend applications that provide the API layer of the IoT platform using TypeScript and Node.js Build and maintain backend services supporting mobile and web solutions Use Node.js, TypeScript, and Kubernetes to deliver reliable and scalable systems Integrate backend features with IoT devices, analytics modules, and other platform components Ensure high performance, clean architecture, and smooth cooperation with other teams Requirements Minimum 5 years of commercial experience in backend development Strong knowledge of Node.js and TypeScript Understanding of distributed systems and scalable backend design Experience with containerized or cloud‑based environments (e.g., Kubernetes) Ability to work in an Agile environment and deliver high‑quality code Fluency in English Residing in Poland required

🏢 Summary: Backend Developer role focused on modernizing and transforming legacy sales systems using Node.js and .NET technologies. The position involves building and maintaining APIs, databases, and event-driven architectures within AWS, while supporting deployment and continuous improvement processes. The role emphasizes proactive development, high-quality testable code, and collaboration on large-scale backend initiatives. 🗂️ Requirements: 5-6 years experience with Node.js, 2-3 years experience with .NET, Strong proficiency in TypeScript and JavaScript, Experience building and maintaining APIs, Experience with PostgreSQL and DynamoDB, Experience with event-driven architecture, Experience with AWS services, Ability to write modern, testable, high-quality code, Experience with CI/CD pipelines, Experience maintaining and modernizing legacy systems 📃 Skills: Node.js, TypeScript, JavaScript, .NET, AWS, Lambda, DynamoDB, PostgreSQL, RDS, ECS, Kafka, EventBridge, CDK, GitLab, CI, Docker, Localstack 🏢 Description: We're seeking an experienced & energetic Backend Developer specializing in TypeScript/JavaScript/.NET to enhance the global Sales ecosystem. This role focuses on transforming backend systems, emphasizing proactive development and team empowerment. Candidates should bring a blend of Node.js and .NET expertise to the table, along with a collaborative spirit and a commitment to writing modern, testable code. Our Client’s team, comprising about 25 individuals, is modernizing legacy systems to fulfill local market needs while improving our processes continually. If you're motivated by challenges and have a passion for creating high-value solutions, we want to hear from you! Main Responsibilities: Drive initiatives and collaborate with team members on larger projects. Fix bugs and implement smaller enhancements across the application. Participate in creating and maintaining APIs using AWS services. Develop and improve databases with a focus on PostgreSQL and DynamoDB. Contribute to an event-driven architecture utilizing Kafka and AWS EventBridge. Manage deployment processes using AWS CDK and GitLab CI. Support legacy system maintenance and modernization. Key Requirements: At least 5-6 years of experience as a Node.js Developer. 2-3 years of experience with .NET. Energetic and inspiring personality who thrives on challenges. Hands-on work ethic in collaboration with team members. Proficiency in writing modern, testable, and high-quality code. Natural inclination towards evolutive maintenance. Nice to Have: AWS experience (Serverless Lambda, DynamoDB, RDS, ECS, AWS CDK). Knowledge of Localstack. Experience with Docker. Other Details: This position allows for team activities at least twice per year in Sweden, with a focus on modernizing our legacy systems into proactive, quality-focused solutions. Join a team of about 25 members dedicated to driving transformative change in our sales ecosystem.

🏢 Summary: Senior Backend Engineer role focused on building and scaling a cloud-based SaaS platform using modern .NET services and REST APIs. The position involves designing distributed systems, improving reliability and observability, and working with cloud and container environments. You will contribute to technical decisions and engineering best practices within a collaborative team. 🗂️ Requirements: 5+ years backend development experience, Experience with SaaS and web applications, Strong knowledge of C#, Strong knowledge of modern .NET/.NET Core, Solid computer science fundamentals, Experience with distributed systems design, Experience with cloud platforms, Experience with containers and orchestration, Understanding of concurrency and performance, Knowledge of authentication and authorization mechanisms 📃 Skills: C#, .NET, .NETCore, REST, Azure, AWS, GCP, Kubernetes, Kafka, RabbitMQ, SQS, Docker, SQL, HTML, CSS, JavaScript 🏢 Description: We’re hiring a Senior Backend Engineer to help build and scale a cloud-based SaaS platform. You’ll work on modern .NET services and APIs, improve reliability and observability, and contribute to technical decisions as part of a collaborative engineering team. Responsibilities: Build and maintain backend services and REST APIs in C# / .NET (.NET Core). Design scalable solutions for distributed systems (async workflows, messaging, integrations). Work with cloud services (Azure/AWS/GCP) and container environments (e.g. Kubernetes). Strengthen system reliability with logging, metrics, tracing, and monitoring. Support secure access patterns: authentication/authorization, API gateway concepts. Contribute through code reviews, good engineering practices, and automation. Requirements: 5+ years of backend development experience, including SaaS and web applications. Strong knowledge of C# and modern .NET + solid CS fundamentals. Familiarity with containers/orchestration and cloud-native approaches. Experience with some of: Kafka/RabbitMQ/SQS, workflow orchestration, job scheduling, search. Good understanding of concurrency and performance. Strong communication skills; Agile/Scrum is a plus. Bonus: basic front-end knowledge (HTML/CSS/JS).

🏢 Summary: Senior Backend / Platform Engineer role focused on building and evolving a complex low-code / backend-as-a-service platform powered by AI, operating in a large production monorepo. The position involves designing scalable backend services, AI agents, runtime systems, and event-driven architectures on Google Cloud. It offers strong architectural impact, long-term product ownership, and work in a highly technical, AI-augmented engineering environment. 🗂️ Requirements: Minimum 7 years commercial backend development experience, Very strong TypeScript knowledge, Strong experience with Node.js and NestJS, Fastify or Express, Practical production experience with Google Cloud, Very good knowledge of PostgreSQL, SQL and Redis, Experience with service-oriented and event-driven architecture, Experience with asynchronous processing, queues, webhooks, triggers and background jobs, Ability to design stable API contracts, domain models and persistence mechanisms, Experience with containerization and runtime environments, Experience with Jest and integration testing, Ability to diagnose production issues based on logs, events and traces, Experience working in large monorepos, Experience working with AI tools in software development, Polish C2, English B2+ 📃 Skills: TypeScript, Node.js, NestJS, Fastify, Express, Go, PostgreSQL, SQL, Redis, GCP, Docker, Jest, Playwright, OpenAI, Gemini, Angular, AWS, Azure, WebSocket, SSE, PubSub, Eventarc, CloudTasks, CloudRun, Firestore 🏢 Description: 🚀 Senior Backend / Platform Engineer TypeScript, Node.js, GCP RevoEngine buduje zaawansowaną platformę low-code / backend-as-a-service wspieraną przez AI. Pracujemy nad dużym produkcyjnym monorepo, które obejmuje backend, runtime’y wykonawcze, automatyzacje, event-driven workflows, integracje, systemy kolejkowe, agentów AI, narzędzia developerskie oraz infrastrukturę działającą w multi cloud. To nie jest prosty CRUD ani klasyczny software house. Szukamy bardzo mocnego Senior Software Engineera, który chce budować technicznie wymagający produkt od środka i mieć realny wpływ na jego architekturę. 👤 Kogo szukamy? Szukamy osoby z mocnym backendowym doświadczeniem, która potrafi samodzielnie projektować, implementować i utrzymywać złożone systemy produkcyjne. Idealna osoba rozumie nie tylko kod aplikacyjny, ale też runtime, dane, kolejki, eventy, integracje, bezpieczeństwo, observability, testy, deployment i realne zachowanie systemu na produkcji. To rola dla seniora (albo aspirującego mocnego mida), który chce pracować nad ambitnym produktem technologicznym długofalowo, a nie nad dodatkowym projektem po godzinach, oraz kogoś kto chciałby w przyszłości zostać CTO . Oczekujemy bardzo krótkiego okresu wypowiedzenia albo kogoś bez zobowiązań poszukujący aktywnie jedynego projektu. 🤖 Jak pracujemy z AI? Codex i narzędzia AI są u nas podstawą codziennej pracy. Używamy ich do analizy kodu, projektowania zmian, pisania testów, refactorów, diagnostyki, dokumentacji i przyspieszania pracy w dużym monorepo. To nie oznacza jednak “ vibe codingu ” ani bezrefleksyjnego akceptowania wygenerowanych zmian. Oczekujemy bardzo mocnego human-in-the-loop : rozumienia architektury, świadomej kontroli nad kodem, weryfikacji zmian, pisania testów, czytania diffów i brania odpowiedzialności za efekt końcowy. Szukamy osoby, która potrafi wykorzystać AI jako mocne narzędzie inżynierskie, ale sama pozostaje właścicielem decyzji technicznych. AI może przyspieszać pracę, ale nie zastępuje seniorowego myślenia, odpowiedzialności i jakości. 🛠️ Nad czym będziesz pracować? • Rozwój dużej platformy backendowej działającej jako low-code / backend-as-a-service. • Budowa i rozwój własnego agenta AI oraz mechanizmów związanych z jego runtime’em, narzędziami, pamięcią, streamingiem, walidacją i automatyzacją pracy. • Projektowanie i implementacja usług backendowych w TypeScript / Node.js / NestJS / GO. • Praca nad runtime’ami wykonawczymi, integracjami, zadaniami asynchronicznymi, webhookami, triggerami i event-driven flows. • Rozwój API, modeli domenowych, kontraktów, migracji, warstwy danych i mechanizmów persystencji. • Praca z Google Cloud jako głównym środowiskiem produkcyjnym. • Projektowanie mechanizmów skalowania, odporności na błędy, retry policies, timeoutów, kolejek i procesów backgroundowych. • Rozwój narzędzi developerskich, systemów execution/sandbox oraz elementów infrastruktury runtime. • Analiza problemów produkcyjnych na podstawie logów, eventów, stanu bazy, trace’ów i rzeczywistego przepływu systemu. • Pisanie i utrzymywanie testów jednostkowych, integracyjnych oraz E2E. • Współpraca bezpośrednio z zespołem produktowym i technicznym przy decyzjach architektonicznych. ✅ Wymagania • Minimum 7 lat komercyjnego doświadczenia w tworzeniu aplikacji backendowych. • Bardzo dobra znajomość TypeScript. • Bardzo dobre doświadczenie z Node.js, NestJS, Fastify / Express i projektowaniem API. • Praktyczna znajomość Google Cloud jako środowiska produkcyjnego. • Bardzo dobra znajomość PostgreSQL, SQL, Redis oraz pracy z danymi w systemach produkcyjnych. • Doświadczenie z architekturą usługową, asynchronicznym przetwarzaniem, kolejkami, eventami, triggerami, webhookami i background jobs. • Umiejętność projektowania stabilnych kontraktów API, modeli domenowych, migracji i mechanizmów persystencji. • Praktyczne doświadczenie z konteneryzacją aplikacji i środowiskami uruchomieniowymi. • Doświadczenie z testami: Jest, testy integracyjne, mile widziany Playwright. • Umiejętność diagnozowania problemów produkcyjnych bez zgadywania. • Umiejętność pracy w dużym monorepo i rozumienie granic odpowiedzialności między modułami / pakietami / usługami. • Samodzielność techniczna i odpowiedzialność za jakość dowożonych rozwiązań. • Doświadczenie w pracy z narzędziami AI. • Język polski C2. • Język angielski B2+. ⭐ Mile widziane • Doświadczenie z OpenAI API (w szczególności response API oraz najnowsze modele). • Doświadczenie z Gemini API. • Doświadczenie w budowie agentów AI, workflow automation, runtime orchestration lub narzędzi dla developerów. • Doświadczenie z Go. • Doświadczenie z Angular przy złożonych aplikacjach enterprise. • Doświadczenie z platformami low-code / no-code. • Znajomość AWS lub Azure. • Doświadczenie z WebSocket, SSE, streamingiem eventów i realtime. • Doświadczenie z systemami sandbox / isolated execution / remote runtime. • Doświadczenie z Eventarc, Pub/Sub, Cloud Tasks, Cloud Run, Firestore lub podobnymi usługami cloud-native. 🎁 Co oferujemy? • W pełni zdalną współpracę. • Bezpośrednią współpracę B2B, bez pośredników. • Pracę nad własnym produktem, nie outsourcingiem. • Duży wpływ na architekturę i kierunek rozwoju platformy. • Pracę w małym, mocnym technicznie zespole. • Bardzo szeroki zakres technologiczny: backend, cloud, runtime, AI, automatyzacje, integracje i narzędzia developerskie. • Wymagające, ale bardzo rozwojowe środowisko. • Stabilną, długofalową współpracę. • Możliwość otrzymania udziałów po długoterminowej współpracy. • Spotkania i wyjazdy zespołowe kilka razy w roku. • Wynagrodzenie adekwatne do poziomu: rekomendowany zakres 150–200 PLN/h B2B, zależnie od doświadczenia, samodzielności i realnego wpływu na produkt. 🎯 Dla kogo ta rola jest dobra? • Dla seniora, który chce budować złożony produkt technologiczny, a nie tylko zamykać tickety. • Będziesz pracować przy dużym monorepo, agentach AI, backendzie, runtime’ach, triggerach, automatyzacjach, integracjach, infrastrukturze cloud i narzędziach developerskich. To środowisko, w którym liczy się samodzielność, jakość techniczna i umiejętność rozumienia całego systemu. • Jeśli szukasz spokojnego utrzymania prostych CRUDów, to prawdopodobnie nie będzie dobre miejsce. • Jeśli chcesz pracować nad platformą, w której po roku zdobędziesz doświadczenie większe niż w kilku typowych projektach enterprise, porozmawiajmy. ⚙️ Proces rekrutacyjny Krótkie spotkanie online, 25–30 minut Rozmowa o doświadczeniu, oczekiwaniach, dostępności i dopasowaniu do projektu, ustalenie warunków współpracy. Spotkanie techniczne, 60 minut Rozmowa o backendzie, architekturze, GCP, TypeScript, testach, runtime’ach, systemach produkcyjnych i sposobie podejmowania decyzji technicznych.

🏢 Summary: Backend Developer role focused on modernizing and transforming legacy sales systems using Node.js and .NET technologies. The position involves building and maintaining APIs, developing databases, and contributing to an event-driven architecture in an AWS-based environment. The role combines hands-on backend development with active participation in deployment processes and system evolution. 🗂️ Requirements: 5-6 years of recent Node.js development experience, 2-3 years of recent .NET development experience, Experience building and maintaining APIs, Experience with PostgreSQL and DynamoDB databases, Experience working with event-driven architecture, Experience with AWS services, Ability to write modern, testable, high-quality code, Experience with deployment automation and CI/CD pipelines 📃 Skills: Node.js, TypeScript, JavaScript, .NET, AWS, Lambda, DynamoDB, RDS, ECS, CDK, PostgreSQL, Kafka, EventBridge, GitLab, CI, Docker, Localstack 🏢 Description: We're seeking an experienced & energetic Backend Developer specializing in TypeScript/JavaScript/.NET to enhance the global Sales ecosystem. This role focuses on transforming backend systems, emphasizing proactive development and team empowerment. Candidates should bring a blend of Node.js and .NET expertise to the table, along with a collaborative spirit and a commitment to writing modern, testable code. Our Client’s team, comprising about 25 individuals, is modernizing legacy systems to fulfill local market needs while improving our processes continually. If you're motivated by challenges and have a passion for creating high-value solutions, we want to hear from you! What we offer: Rate: 40-45 euro/h +VAT Remote role B2B Contract Main Responsibilities: Drive initiatives and collaborate with team members on larger projects. Fix bugs and implement smaller enhancements across the application. Participate in creating and maintaining APIs using AWS services. Develop and improve databases with a focus on PostgreSQL and DynamoDB. Contribute to an event-driven architecture utilizing Kafka and AWS EventBridge. Manage deployment processes using AWS CDK and GitLab CI. Support legacy system maintenance and modernization. Key Requirements: At least 5-6 years of recent experience as a Node.js Developer. 2-3 years of recent experience with .NET. Energetic and inspiring personality who thrives on challenges. Hands-on work ethic in collaboration with team members. Proficiency in writing modern, testable, and high-quality code. Natural inclination towards evolutive maintenance. Nice to Have: AWS experience (Serverless Lambda, DynamoDB, RDS, ECS, AWS CDK). Knowledge of Localstack. Experience with Docker. Other Details: This position allows for team activities at least twice per year in Sweden, with a focus on modernizing our legacy systems into proactive, quality-focused solutions. Join a team of about 25 members dedicated to driving transformative change in our sales ecosystem.