Senior Backend Developer (Node.js/TypeScript)

🏢 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 Node.js Backend Developer for a long-term, fully remote B2B project focused on building and developing scalable backend systems in microservices architecture. The role involves designing REST APIs, integrating databases and external services, and ensuring high code quality and performance. The project leverages modern Node.js technologies and cloud-oriented architecture. 🗂️ Requirements: Commercial experience with JavaScript or TypeScript, Strong knowledge of Node.js, Experience with backend frameworks (e.g. Express), Experience designing and working with microservices architecture, Experience with SQL and NoSQL databases, Experience building and maintaining REST API, Basic knowledge of Git, Ability to write testable code and create unit and integration tests 📃 Skills: JavaScript, TypeScript, Node.js, Express, REST, Microservices, PostgreSQL, MongoDB, SQL, NoSQL, Git, API 🏢 Description: RITS Group to firma IT realizująca projekty technologiczne dla klientów z różnych branż — od finansów, przez zdrowie, po przemysł. Naszym celem jest tworzenie wysokiej jakości rozwiązań, które realnie wspierają biznes. Obecnie poszukujemy doświadczonego Node Backend Developera na poziomie Senior , który dołączy do jednego z naszych kluczowych projektów technologicznych. Nasz zespół pracuje z wykorzystaniem najnowszych technologii, takich jak Node.js, mikroserwisy oraz architektura chmurowa. Oferujemy Tryb pracy: zdalnie Umowa: B2B Stawka: 120 -140 zł/h netto + VAT Start: do uzgodnienia, najlepiej ASAP Typ współpracy: długofalowa Obowiązki Projektowanie i rozwój backendu w Node.js Tworzenie i utrzymanie REST API Projektowanie oraz rozwój systemów opartych o architekturę mikroserwisów Integracja z bazami danych (SQL i NoSQL) Implementacja logiki biznesowej aplikacji Współpraca z zespołem frontend i DevOps Pisanie testów jednostkowych i integracyjnych Optymalizacja wydajności aplikacji Integracja z zewnętrznymi API (np. systemy płatności, usługi zewnętrzne) Wymagania Doświadczenie w programowaniu w JavaScript lub TypeScript Znajomość Node.js i frameworków backendowych (np. Express) Doświadczenie w projektowaniu i pracy z architekturą mikroserwisów Doświadczenie w pracy z bazami danych (np. PostgreSQL, MongoDB) Znajomość REST API Podstawowa znajomość Git Umiejętność pisania czytelnego i testowalnego kodu Mile widziane Znajomość Docker Doświadczenie z systemami kolejkowymi (np. RabbitMQ, Kafka) Znajomość systemów chmurowych (AWS, GCP, Azure) Doświadczenie z CI/CD Ta rola nie jest dla Ciebie, ale masz znajomego, który by się sprawdził? Poleć go i zgarnij nawet 5000 zł. Referral Program: Talent from your network Nr ref.: 19/3/2026/MB/3243

🏢 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.

🏢 Summary: Senior TypeScript/Node.js Developer role focused on transforming a global AdTech platform into a scalable, API-first, multi-tenant microservices architecture on AWS serverless. The position involves designing high-performance services, governing API standards, and driving architectural standardization toward a reusable platform model. Work centers on performance, reliability, cost-efficiency, and strict data isolation at scale. 🗂️ Requirements: 7+ years production experience as Back-End Developer, Strong expertise in TypeScript, Strong expertise in Node.js, Experience designing API-first microservice architectures, Deep knowledge of AWS serverless: Lambda, API Gateway, DynamoDB, EventBridge, Experience with IaC tools: CloudFormation or Terraform, Experience designing RESTful APIs, Experience designing GraphQL APIs, Understanding of multi-tenant architecture, Experience with logical data isolation patterns, AdTech domain knowledge, Experience building standardized multi-client platforms, Focus on performance and reliability in distributed systems, Upper-Intermediate English level 📃 Skills: TypeScript, Node.js, AWS, Lambda, APIGateway, DynamoDB, EventBridge, CloudFormation, Terraform, REST, GraphQL, OpenAPI, JWT, AdCP, Microservices, Serverless, IaC 🏢 Description: Are you passionate about building high-performance platforms that serve millions of users worldwide? We are looking for a Senior TypeScript/Node.js Developer to join our team and help transform a global AdTech product into a scalable, platform-first architecture. At Sigma Software, we value engineering excellence, innovation, and collaboration, offering the opportunity to work on cutting-edge projects with world-class customers. You will have the chance to work with advanced AWS serverless solutions, contribute to strategic architectural decisions, and enjoy a supportive environment with professional growth opportunities. CUSTOMER Our Customer is a Sweden-based AdTech company specializing in advanced self-serve advertising platforms that automate direct transactions between advertisers and major global publishers. Their technology removes traditional friction in ad sales by enabling automation, transparency, and operational efficiency at scale. Platforms are trusted by internationally recognized publishers including TripAdvisor, Bloomberg, The Washington Post, Opera, and Dow Jones, handling millions of transactions worldwide. PROJECT The project is a strategic architectural transformation toward a Platform-First approach. The company is transitioning from monolithic, client-specific implementations to a standardized, API-driven, multi-tenant ecosystem of reusable microservices. These services power the entire product suite, remaining independent, scalable, and decoupled from frontend or customer-specific customization. Key Technologies: TypeScript, Node.js, AWS Lambda, API Gateway, DynamoDB, EventBridge, IaC tools (CloudFormation or Terraform), RESTful/GraphQL APIs. RESPONSIBILITIES Own and govern API design by defining and maintaining strict OpenAPI specifications before implementation begins Design and implement high-performance microservices using TypeScript and Node.js within a serverless AWS architecture Drive FinOps excellence by architecting solutions with AWS Lambda, API Gateway, DynamoDB, and EventBridge to achieve a Scale-to-Zero cost model Enforce logical isolation patterns across services, ensuring strict tenant data separation via JWT policies and Row-Level Security Maintain adherence to the Ad Context Protocol (AdCP) across all data models for consistent AdTech data language Develop reusable “Golden Path” templates, shared libraries, and engineering best practices Conduct rigorous code reviews focusing on latency (<200ms), availability (99.99%), and observability Translate product and commercial requirements into scalable technical specifications Contribute to evolving the overall platform architecture toward standardization and reusability REQUIREMENTS At least 7 years of production experience as a Back-End Developer Strong hands-on expertise with TypeScript and Node.js Proven experience designing API-first microservice architectures Deep expertise in AWS serverless ecosystem: Lambda, API Gateway, DynamoDB, EventBridge, and IaC tools (CloudFormation or Terraform) Solid AdTech domain knowledge, including advertising data models and workflows Extensive experience designing RESTful and GraphQL APIs with versioning, backward compatibility, and documentation Strong understanding of multi-tenant architecture and logical data isolation patterns Experience building standardized platforms for multiple clients instead of custom solutions Strong focus on performance, reliability, and observability in distributed systems At least an Upper-Intermediate level of English WILL BE A PLUS Experience as a Lead Back-End Developer PERSONAL PROFILE Proactive and detail-oriented with a strong sense of ownership Enjoys solving complex architectural challenges Thrives in collaborative, cross-functional teams Committed to delivering high-quality solutions meeting demanding performance and reliability standards

🏢 Summary: Senior TypeScript/Node.js Developer role focused on transforming a global AdTech product into a scalable, platform-first, API-driven microservices architecture. The position involves designing high-performance serverless solutions on AWS, enforcing strict API standards, and ensuring multi-tenant data isolation. You will drive architectural decisions to build reusable, scalable services powering millions of transactions worldwide. 🗂️ Requirements: 7+ years production experience as Back-End Developer, Strong expertise in TypeScript and Node.js, Experience designing API-first microservice architectures, Deep knowledge of AWS serverless (Lambda, API Gateway, DynamoDB, EventBridge), Experience with IaC tools (CloudFormation or Terraform), Experience designing RESTful and GraphQL APIs with versioning and backward compatibility, Understanding of multi-tenant architecture and logical data isolation, Knowledge of AdTech data models and workflows, Focus on performance, reliability, and observability in distributed systems, Upper-Intermediate English level 📃 Skills: TypeScript, Node.js, AWS, Lambda, APIGateway, DynamoDB, EventBridge, CloudFormation, Terraform, REST, GraphQL, OpenAPI, JWT, AdCP, Microservices, Serverless, IaC 🏢 Description: Are you passionate about building high-performance platforms that serve millions of users worldwide? We are looking for a Senior TypeScript/Node.js Developer to join our team and help transform a global AdTech product into a scalable, platform-first architecture. At Sigma Software, we value engineering excellence, innovation, and collaboration, offering the opportunity to work on cutting-edge projects with world-class customers. You will have the chance to work with advanced AWS serverless solutions, contribute to strategic architectural decisions, and enjoy a supportive environment with professional growth opportunities. CUSTOMER Our Customer is a Sweden-based AdTech company specializing in advanced self-serve advertising platforms that automate direct transactions between advertisers and major global publishers. Their technology removes traditional friction in ad sales by enabling automation, transparency, and operational efficiency at scale. Platforms are trusted by internationally recognized publishers including TripAdvisor, Bloomberg, The Washington Post, Opera, and Dow Jones, handling millions of transactions worldwide. PROJECT The project is a strategic architectural transformation toward a Platform-First approach. The company is transitioning from monolithic, client-specific implementations to a standardized, API-driven, multi-tenant ecosystem of reusable microservices. These services power the entire product suite, remaining independent, scalable, and decoupled from frontend or customer-specific customization. Key Technologies: TypeScript, Node.js, AWS Lambda, API Gateway, DynamoDB, EventBridge, IaC tools (CloudFormation or Terraform), RESTful/GraphQL APIs. RESPONSIBILITIES Own and govern API design by defining and maintaining strict OpenAPI specifications before implementation begins Design and implement high-performance microservices using TypeScript and Node.js within a serverless AWS architecture Drive FinOps excellence by architecting solutions with AWS Lambda, API Gateway, DynamoDB, and EventBridge to achieve a Scale-to-Zero cost model Enforce logical isolation patterns across services, ensuring strict tenant data separation via JWT policies and Row-Level Security Maintain adherence to the Ad Context Protocol (AdCP) across all data models for consistent AdTech data language Develop reusable “Golden Path” templates, shared libraries, and engineering best practices Conduct rigorous code reviews focusing on latency (<200ms), availability (99.99%), and observability Translate product and commercial requirements into scalable technical specifications Contribute to evolving the overall platform architecture toward standardization and reusability REQUIREMENTS At least 7 years of production experience as a Back-End Developer Strong hands-on expertise with TypeScript and Node.js Proven experience designing API-first microservice architectures Deep expertise in AWS serverless ecosystem: Lambda, API Gateway, DynamoDB, EventBridge, and IaC tools (CloudFormation or Terraform) Solid AdTech domain knowledge, including advertising data models and workflows Extensive experience designing RESTful and GraphQL APIs with versioning, backward compatibility, and documentation Strong understanding of multi-tenant architecture and logical data isolation patterns Experience building standardized platforms for multiple clients instead of custom solutions Strong focus on performance, reliability, and observability in distributed systems At least an Upper-Intermediate level of English WILL BE A PLUS Experience as a Lead Back-End Developer PERSONAL PROFILE Proactive and detail-oriented with a strong sense of ownership Enjoys solving complex architectural challenges Thrives in collaborative, cross-functional teams Committed to delivering high-quality solutions meeting demanding performance and reliability standards

🏢 Summary: Frontend-focused role developing and maintaining scalable React applications with TypeScript, integrated with Node.js backend services and data pipelines. The position involves building production-grade, data-driven solutions, contributing to architecture decisions, and optimizing complex UI workflows. It offers work on a high-impact product within a modern TypeScript and React ecosystem. 🗂️ Requirements: Strong proficiency in React, Strong proficiency in TypeScript, Experience building large-scale production applications, Experience with Node.js and API integrations, Experience with data-driven applications, Understanding of modern frontend architecture, Knowledge of testing practices, Ability to work in cross-functional teams 📃 Skills: React, TypeScript, Node.js, APIs, Microservices, Snowflake, Testing, Architecture, Data, Pipelines 🏢 Description: ✅ Your responsibilities: Develop and maintain scalable React applications with TypeScript across the full frontend stack Collaborate closely with backend engineers, data teams, and product managers to deliver high-quality solutions Ensure type safety, code quality, and maintainability throughout the application Participate in design and architecture discussions, proposing improvements to frontend patterns and integrations Troubleshoot and optimize complex UI and data-intensive workflows Support knowledge sharing and mentor junior developers when needed 🧠 Our requirements: Strong proficiency in React and TypeScript , with experience building large-scale, production-grade applications Familiarity with Node.js backend development and integration with APIs or microservices Experience working with data-driven applications , ideally with Snowflake, data lakes, or pipelines Solid understanding of modern frontend architecture, testing, and best practices Ability to communicate effectively in a cross-functional, high-stakes environment Proactive, self-motivated, and capable of delivering high-quality solutions under tight timelines 🌟 What we offer: Opportunity to work on a premium, high-profile product with global business impact Exposure to a modern TypeScript/React ecosystem, integrated with backend Node.js services and advanced data pipelines Collaborative environment with experienced engineers and product leaders Career growth and technical mentorship in a cross-functional team Competitive employment package and benefits.

🏢 Summary: Offer for a Staff / Lead Backend Engineer responsible for designing and developing scalable, AI-first backend systems using Node.js and NestJS. The role focuses on architectural leadership, event-driven systems, security, and high-quality backend development in a distributed environment. It involves supporting LLM integrations and using agentic coding tools in daily work. 🗂️ Requirements: 7+ years of backend production experience, Strong experience with Node.js, Strong experience with TypeScript, Strong experience with NestJS, Strong knowledge of PostgreSQL including query plans, indexes, transactions and raw SQL, Experience with async and event-driven systems, Experience with queues, retries, idempotency and job processing, Knowledge of OAuth 2.0, Knowledge of RBAC/ABAC, Knowledge of OWASP standards, Experience with audit logs, secrets management and permission boundaries, Experience with multitenancy and data isolation patterns, Experience writing ADRs and leading architectural decisions, Experience with agentic coding tools, Very good English, Very good Polish 📃 Skills: Node.js, TypeScript, NestJS, PostgreSQL, SQL, OAuth2, RBAC, ABAC, OWASP, RLS, Queues, OpenTelemetry, GCP, GKE, Stripe, LLM 🏢 Description: Hello, We are called People More because we treat our employees with respect, but also because the projects we work on are for people and should be easy and pleasant to use. We are technological, but we look at the bigger picture :) The company is made up of people with a huge client base in the country and abroad, for whom we build projects from scratch (UX, UI, frontend, backend, mobile) or in part. We work directly for our clients and also support our partners in their own solutions. This ensures a wide range of projects and the ability to change! We work with clients all over the world. For the project that we are working on with our partner, we are looking for Staff / Lead Backend Engineer (Node.js / NestJS/  (AI-first). Your duties will include: Designing backend architecture for a scalable product Developing and maintaining backend services in Node.js / NestJS Leading technical and architectural decisions Building event-driven systems and queue-based processing Ensuring security, observability, and high code quality Supporting AI/LLM integrations on the backend side Using AI/agentic coding tools in day-to-day development work Requirements that must be met: 7+ years of production backend experience, Strong production experience with Node.js / TypeScript and NestJS, PostgreSQL: query plans, indexes, transactions, raw SQL when needed, not only ORM, Async/event-driven systems: queues, retries, idempotency, job processing, Security: OAuth 2.0, RBAC/ABAC, OWASP, audit logs, secrets, permission boundaries, Multitenancy / data isolation / RLS-style patterns, Writing ADRs and leading architectural decisions, Experience with agentic coding, combined with a very strong quality mindset. Very good English and Polish Nice to have: Experience building systems at real scale: high traffic, large user base, high availability, OpenTelemetry, distributed tracing, structured logging, dashboards, alerting, Cloud experience (preferably GCP/GKE), Stripe / payments, Backend-level LLM integrations. What we offer: We are open and honest and we solve problems instead of generating them. Maybe it’s obvious, but we really respect our employees and associates. We used to be software developers, too, and we appreciate that job! A small team An international working environment and international projects Private medical care Sports card Training courses Work that is 100% remote (unless you prefer another system) We have an office in Krakow, but if you like to work remotely, that’s absolutely fine. We are OK with fully remote work. For us, you can be located anywhere. :) Why it’s a good idea to work with People More? If you are not satisfied with your work or your tasks, we’ll find a way out together! If you get bored, we will offer you a new product and new, fascinating tasks We will work on your brand together: you will get an opportunity to attend conferences, including as a speaker, and we will help you publish in recognized magazines and online We will facilitate your access to challenges that are usually difficult to get At any time, you can talk directly to the board of People More—we talk your language because the company’s founders are software developers and designers! What does the recruitment process look like? A friendly remote initial interview A remote technical talk The decision to work together!

🏢 Summary: Staff/Lead Backend Engineer role focused on designing and building a scalable, AI-first backend using Node.js and NestJS. The position involves leading architectural decisions, developing event-driven systems, and ensuring security, quality, and observability in a production environment. The engineer will also support AI/LLM integrations and use agentic coding tools in daily work. 🗂️ Requirements: 7+ years of production backend experience, Strong production experience with Node.js, Strong production experience with TypeScript, Strong production experience with NestJS, Advanced PostgreSQL knowledge (query plans, indexes, transactions, raw SQL), Experience with async and event-driven systems (queues, retries, idempotency, job processing), Strong knowledge of security standards (OAuth 2.0, RBAC/ABAC, OWASP), Experience with multitenancy and data isolation patterns, Experience writing ADRs and leading architectural decisions, Experience with agentic coding tools, Very good English, Very good Polish 📃 Skills: Node.js, TypeScript, NestJS, PostgreSQL, OAuth2, RBAC, ABAC, OWASP, Multitenancy, RLS, Queues, Idempotency, SQL, ADR, AI, LLM 🏢 Description: Hello, We are called People More because we treat our employees with respect, but also because the projects we work on are for people and should be easy and pleasant to use. We are technological, but we look at the bigger picture :) The company is made up of people with a huge client base in the country and abroad, for whom we build projects from scratch (UX, UI, frontend, backend, mobile) or in part. We work directly for our clients and also support our partners in their own solutions. This ensures a wide range of projects and the ability to change! We work with clients all over the world. For the project that we are working on with our partner, we are looking for Staff / Lead Backend Engineer (Node.js / NestJS/  (AI-first). Your duties will include: Designing backend architecture for a scalable product Developing and maintaining backend services in Node.js / NestJS Leading technical and architectural decisions Building event-driven systems and queue-based processing Ensuring security, observability, and high code quality Supporting AI/LLM integrations on the backend side Using AI/agentic coding tools in day-to-day development work Requirements that must be met: 7+ years of production backend experience, Strong production experience with Node.js / TypeScript and NestJS, PostgreSQL: query plans, indexes, transactions, raw SQL when needed, not only ORM, Async/event-driven systems: queues, retries, idempotency, job processing, Security: OAuth 2.0, RBAC/ABAC, OWASP, audit logs, secrets, permission boundaries, Multitenancy / data isolation / RLS-style patterns, Writing ADRs and leading architectural decisions, Experience with agentic coding, combined with a very strong quality mindset. Very good English and Polish Nice to have: Experience building systems at real scale: high traffic, large user base, high availability, OpenTelemetry, distributed tracing, structured logging, dashboards, alerting, Cloud experience (preferably GCP/GKE), Stripe / payments, Backend-level LLM integrations. What we offer: We are open and honest and we solve problems instead of generating them. Maybe it’s obvious, but we really respect our employees and associates. We used to be software developers, too, and we appreciate that job! A small team An international working environment and international projects Private medical care Sports card Training courses Work that is 100% remote (unless you prefer another system) We have an office in Krakow, but if you like to work remotely, that’s absolutely fine. We are OK with fully remote work. For us, you can be located anywhere. :) Why it’s a good idea to work with People More? If you are not satisfied with your work or your tasks, we’ll find a way out together! If you get bored, we will offer you a new product and new, fascinating tasks We will work on your brand together: you will get an opportunity to attend conferences, including as a speaker, and we will help you publish in recognized magazines and online We will facilitate your access to challenges that are usually difficult to get At any time, you can talk directly to the board of People More—we talk your language because the company’s founders are software developers and designers! What does the recruitment process look like? A friendly remote initial interview A remote technical talk The decision to work together!

🏢 Summary: Senior Backend Engineer role focused on designing, building, deploying, and maintaining scalable backend systems using TypeScript and Node.js in a cloud environment. The position involves developing microservices on AWS, shaping system architecture across platforms, and ensuring production reliability for international users. Strong emphasis on clean architecture, testing, and infrastructure as code. 🗂️ Requirements: 5+ years backend development experience in production environments, Expert hands-on experience with TypeScript and Node.js, Strong knowledge of software engineering principles, testing, data structures, and algorithms, Experience designing and developing REST APIs, Experience with event-driven architecture, Experience building and maintaining microservices, Hands-on experience with AWS cloud services, Experience with Infrastructure as Code using Terraform, Experience with CI/CD pipelines and related tools, Strong knowledge of PostgreSQL and DynamoDB, Proficiency in OO design patterns, SOLID principles, and Clean Code, Computer Science degree, Experience working with Agile methodologies such as SCRUM or Kanban 📃 Skills: TypeScript, JavaScript, Node.js, AWS, Terraform, CircleCI, Docker, Datadog, PostgreSQL, DynamoDB, REST, CICD, Microservices, OOP, SOLID, Algorithms, DataStructures, SCRUM, Kanban 🏢 Description: About the role You will need to be an expert in backend development with a thorough understanding of the technologies involved. Strong backend skills where you can demonstrate your ability to apply these technologies, as well as deploy and maintain them will be crucial to success. Technologies we work with: Typescript, JavaScript, Node.js, REST APIs, AWS, Terraform Responsibilities: Designing, writing, testing functionalities for a backend system written in TypeScript, Node.js Deploying and maintaining microservices in AWS using Terraform Design software architecture between backend, frontend and mobile apps Maintaining system on production used by consumers from several European countries Debugging issues Scoping and assessing the complexity of features Participating in sprint planning, daily sprints and meetings with product owners for grooming new features Recruiting and mentoring team members Collaborating with other team members and teams that depend on the functionalities that you develop Required qualifications: 5+ years of production software development experience in backend Strong understanding of software engineering principles, testing, data structures and algorithms Expert hands-on experience in technologies such as Typescript / Node.js Experience in developing Cloud and Infrastructure solutions with AWS and CI/CD processes supported by tools like Terraform, CircleCI, Docker, Datadog, etc. Strong knowledge of DBMS like PostgreSQL, DynamoDB Expertise in REST APIs, Experience in event driven architecture Proficiency in OO design patterns, SOLID principles, Clean Code and solving architectural problems Computer Science degree Experience working with Agile methodologies such as SCRUM and/or Kanban Good communication and collaboration skills Self-motivation, proactive attitude Proficiency in English Nice to have: Exposure to frontend development in React Working experience with one of the object-oriented and/or functional languages such as C#, Python Java, Golang, Kotlin

🏢 Summary: Principal Backend Engineer role focused on designing and evolving scalable backend architecture using Node.js, TypeScript, and NestJS, with strong emphasis on AI/LLM integrations and event-driven systems. The position involves driving architectural decisions, ensuring security and reliability, and collaborating closely with product, frontend, and AI teams. Fully remote work within an international environment with opportunities to influence engineering standards and technical direction. 🗂️ Requirements: 7+ years commercial backend development experience, Strong production experience with Node.js, Strong production experience with TypeScript, Strong production experience with NestJS, Solid PostgreSQL knowledge including query optimization, indexes, transactions, raw SQL, Experience building event-driven and asynchronous systems, Strong understanding of application security principles (OAuth 2.0, RBAC/ABAC, OWASP), Experience designing multitenant architectures and data isolation mechanisms, Experience documenting architectural decisions (ADRs), Hands-on experience with AI-assisted development tools, Practical experience with agentic coding and AI agents, Ability to maintain code quality, security, and maintainability with AI tools, Strong leadership skills, Very good English, Very good Polish 📃 Skills: Node.js, TypeScript, NestJS, PostgreSQL, SQL, OAuth2, RBAC, ABAC, OWASP, RLS, AI, LLM, Claude, Cursor, Copilot, Windsurf, Event-driven, Queues, Architecture, ADR 🏢 Description: Hello, We are called People More because we treat our employees with respect, but also because the projects we work on are for people and should be easy and pleasant to use. We are technological, but we look at the bigger picture :) The company is made up of people with a huge client base in the country and abroad, for whom we build projects from scratch (UX, UI, frontend, backend, mobile) or in part. We work directly for our clients and also support our partners in their own solutions. This ensures a wide range of projects and the ability to change! We work with clients all over the world. For the project that we are working on with our partner, we are looking for Principal Backend Engineer (Node.js / AI / LLM). Your duties will include: Designing and evolving backend architecture for a scalable product Developing and maintaining backend services using Node.js, TypeScript and NestJS Driving technical and architectural decisions across the platform Building event-driven systems and asynchronous processing workflows Ensuring security, reliability, observability, and maintainability of services Supporting integrations with AI/LLM-powered solutions Leveraging modern AI-assisted development tools in daily engineering work Collaborating closely with product, frontend, and AI engineering teams Contributing to engineering best practices and technical documentation Requirements that must be met: 7+ years of commercial backend development experience Strong production experience with Node.js, TypeScript, and NestJS Solid PostgreSQL knowledge, including query optimization, indexes, transactions, and working with raw SQL when needed Experience building event-driven and asynchronous systems (queues, retries, idempotency, job processing) Strong understanding of application security principles, including OAuth 2.0, RBAC/ABAC, OWASP, audit logs, secrets management, and permission boundaries Experience designing multitenant architectures, data isolation mechanisms, and RLS-style patterns Experience making architectural decisions and documenting them through ADRs (Architecture Decision Records) or similar approaches Hands-on experience with AI-assisted software development tools such as Claude Code, Cursor, GitHub Copilot, Windsurf, or similar solutions Practical experience with agentic coding, including the use of AI agents for complex development tasks, code generation, review, and iterative refinement Ability to effectively collaborate with AI coding agents while maintaining high standards of code quality, security, and maintainability Strong leadership skills Very good English and Polish What we offer: We are open and honest and we solve problems instead of generating them. Maybe it’s obvious, but we really respect our employees and associates. We used to be software developers, too, and we appreciate that job! A small team An international working environment and international projects Private medical care Sports card Training courses Work that is 100% remote (unless you prefer another system) We have an office in Krakow, but if you like to work remotely, that’s absolutely fine. We are OK with fully remote work. For us, you can be located anywhere. :) Why it’s a good idea to work with People More? If you are not satisfied with your work or your tasks, we’ll find a way out together! If you get bored, we will offer you a new product and new, fascinating tasks We will work on your brand together: you will get an opportunity to attend conferences, including as a speaker, and we will help you publish in recognized magazines and online We will facilitate your access to challenges that are usually difficult to get At any time, you can talk directly to the board of People More—we talk your language because the company’s founders are software developers and designers! What does the recruitment process look like? A friendly remote initial interview A remote technical talk The decision to work together!