Senior Backend Engineer (.NET + AI)

🏢 Summary: The offer is for a .NET Developer role focused on building scalable, cloud-native applications using modern .NET technologies. The position involves end-to-end delivery, designing technical solutions based on business needs, and ensuring high code quality through testing and best practices. The role also includes working with microservices architectures and leveraging AI-assisted development tools in Agile environments. 🗂️ Requirements: Strong experience with .NET Core / .NET 6+, Experience with Azure and/or AWS, Experience with microservices architecture, Experience with distributed systems, Ability to design technical solutions from business requirements, Hands-on experience with integration and E2E testing, Knowledge of BDD testing approach, Focus on code quality and security best practices, Experience working in Agile environments, Familiarity with AI-assisted development tools 📃 Skills: .NET, .NETCore, C#, Azure, AWS, Microservices, DistributedSystems, REST, IntegrationTesting, E2E, BDD, Agile, AI 🏢 Description: Working as a .NET Developer, you will: develop and deliver high-quality solutions using modern .NET technologies take ownership of key components or subsystems within larger projects, supporting end-to-end delivery design and implement scalable, cloud-native applications (Azure or AWS) translate business needs into clear technical designs and architecture decisions collaborate closely with stakeholders, both technical and non-technical, across the full project lifecycle contribute to discovery, planning, and refinement of specifications and acceptance criteria ensure code quality through testing strategies (including integration and end-to-end tests) participate in architectural discussions and proactively propose improvements use AI-assisted development tools responsibly to enhance productivity and code quality support team members through knowledge sharing and contribute to continuous improvement About Chabre IT Services Chabre IT Services is a global professional IT services provider, building long-lasting relationships with Enterprises. We specialize in the delivery of tailor-made solutions,  smart outsourcing, try&hire, and success fee services. We are a smart IT boutique with unique knowledge, which will deliver your ideas into reality. About our Client Our client is a global technology and consulting organization delivering complex digital transformation initiatives for enterprise clients. They specialize in combining advisory, delivery, and managed services to drive measurable business outcomes. Qualifications strong experience with modern .NET (.NET Core / .NET 6+) solid understanding of cloud platforms (Azure and/or AWS) experience with microservices and distributed systems architecture ability to design technical solutions based on business requirements hands-on experience with testing approaches (e.g. integration, E2E, BDD) strong focus on code quality, security, and engineering best practices excellent problem-solving skills and ownership mindset ability to clearly communicate technical concepts to different audiences experience working in collaborative, Agile environments familiarity with AI-supported development tools and willingness to use them effectively proactive attitude towards learning and supporting team growth We offer Rate: 140 - 170 PLN /h + VAT Remote work Subsidy for peripherals in the amount of 500,00zł Working tool (MacBook Pro or Lenovo Legion 5) Co-financing of courses related to the position Benefits: MultiSport, Medicover

🏢 Summary: Senior .NET Developer role focused on designing and delivering AI-driven solutions using Microsoft technologies and Azure, including Generative AI tools and intelligent automation platforms. The position involves building scalable backend systems, microservices, and cloud-native architectures while leveraging Azure AI services to develop data-driven products. The role covers the full software development lifecycle in an Agile environment with strong emphasis on code quality, DevOps, and cloud integration. 🗂️ Requirements: Strong experience in .NET development, Experience building scalable backend systems, Hands-on experience with Microsoft Azure, Experience with cloud-native architectures, Practical experience with Generative AI technologies, Experience with Azure AI services (Azure OpenAI, Azure AI Foundry, AI Search), Solid understanding of microservices architecture, Experience with event-driven or service-oriented architectures, Experience integrating APIs and building distributed systems, Experience with CI/CD pipelines and DevOps practices, Knowledge of RDBMS (MS SQL or Dataverse), Experience working in Agile environments, Bachelor’s or Master’s degree in Computer Science, Software Engineering, or related field, English and Polish proficiency at B2+ level 📃 Skills: .NET, C#, Azure, AzureOpenAI, AzureAIFoundry, AISearch, GenerativeAI, Microservices, EventDriven, SOA, REST, API, CI/CD, GitHub, AzureDevOps, SQL, MSSQL, Dataverse, Python, Docker, Kubernetes 🏢 Description: Working as a Senior .NET Developer, you will: design and develop AI-driven software solutions using the Microsoft technology stack and Azure services build and implement Generative AI tools, plug-ins, microservices, and extensions that support internal products and business processes translate business needs into scalable technical solutions and system architecture develop, test, and deploy new product features while ensuring high code quality and performance leverage Azure AI services (including Azure OpenAI and AI Search) to deliver intelligent automation and data-driven solutions design and integrate APIs and microservices within secure and scalable cloud architectures collaborate closely with cross-functional teams including product managers, UX specialists, and other developers in Agile Scrum environments implement best practices in software development, source control, and CI/CD using tools such as GitHub and Azure DevOps troubleshoot complex technical challenges and support the full software development lifecycle act as a technical expert within the team, sharing knowledge and contributing to continuous improvement initiatives About Chabre IT Services Chabre IT Services is a global professional IT services provider, building long-lasting relationships with Enterprises. We specialize in the delivery of tailor-made solutions,  smart outsourcing, try&hire, and success fee services. We are a smart IT boutique with unique knowledge, which will deliver your ideas into reality. About our Client Our client is a globally recognized professional services organization that invests heavily in advanced technology and innovation to support its business operations and client services. Their internal technology division focuses on building modern digital products, intelligent automation tools, and AI-driven platforms that transform the way employees and clients interact with data and services. Qualifications strong experience in .NET development and building scalable backend systems hands-on experience with Microsoft Azure and cloud-native architectures practical experience working with Generative AI technologies and Azure AI services (e.g., Azure OpenAI, Azure AI Foundry, AI Search) solid understanding of microservices, event-driven and service-oriented architectures experience integrating APIs and building distributed systems familiarity with CI/CD pipelines , source control tools, and DevOps practices (GitHub, Azure DevOps) knowledge of RDBMS systems such as MS SQL or Dataverse experience with Python , containerization technologies (Docker/Kubernetes), or similar tools is a strong advantage experience working in Agile development environments strong analytical thinking and problem-solving skills excellent communication skills and ability to collaborate with technical and non-technical stakeholders proactive mindset and interest in continuously learning new technologies, particularly in the AI space excellent English & Polish skills (at least B2+ level) Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field We offer Rate: 150-170 PLN /h + VAT Remote work Subsidy for peripherals in the amount of 500,00zł Working tool (MacBook Pro or Lenovo Legion 5) Co-financing of courses related to the position Benefits: MultiSport, Medicover

🏢 Summary: The offer is for a Senior Frontend Engineer responsible for designing and delivering scalable, high-performance Angular applications integrated with AWS-based backend services. The role involves building reusable UI components, developing Node.js services, and ensuring seamless frontend-backend integration in containerized cloud environments. It includes ownership of code quality, automated testing, and CI/CD processes within an agile setup. 🗂️ Requirements: 5+ years frontend or full-stack development experience, Strong expertise in Angular and TypeScript, Proficiency in HTML5 and CSS3, Experience with Bootstrap or component libraries, Practical experience with Node.js, Experience building or consuming REST APIs, Hands-on experience with AWS services integration, Experience with authentication mechanisms (OAuth, OIDC, JWT), Experience with automated testing tools, Experience with CI/CD pipelines, Experience with Git workflows 📃 Skills: Angular, TypeScript, HTML5, CSS3, Bootstrap, Node.js, REST, Express, NestJS, AWS, Cognito, APIGateway, S3, CloudFront, ECS, EKS, Fargate, OAuth, OIDC, JWT, Jest, Cypress, Playwright, CI/CD, Git 🏢 Description: Working as a Senior Frontend Engineer, you will: take ownership of designing and delivering modern Angular applications with a strong focus on scalability, performance, and usability build and maintain reusable UI components using TypeScript, Bootstrap, HTML5, and CSS3 integrate frontend applications with backend services hosted on AWS, including container-based environments develop and support Node.js services (e.g., REST APIs, BFF layers) to ensure smooth communication between frontend and backend collaborate closely with product, design, and engineering teams in an agile environment to translate requirements into working solutions troubleshoot complex integration challenges related to authentication, networking, CORS, and deployments ensure high code quality through peer reviews, automated testing, and continuous improvements contribute to CI/CD processes and promote best practices in testing, monitoring, and observability About Chabre IT Services Chabre IT Services is a global professional IT services provider, building long-lasting relationships with Enterprises. We specialize in the delivery of tailor-made solutions,  smart outsourcing, try&hire, and success fee services. We are a smart IT boutique with unique knowledge, which will deliver your ideas into reality. About our Client Our client is a global technology and consulting organization specializing in delivering complex IT solutions and digital transformation initiatives. The company supports enterprise clients in modernizing their platforms, leveraging cloud technologies, and building scalable, high-performance applications in dynamic, agile environments. Qualifications 5+ years of experience in frontend or full-stack development with strong ownership of delivered solutions strong expertise in Angular , TypeScript, HTML5/CSS3, and component libraries such as Bootstrap practical experience with Node.js and building or consuming REST APIs (e.g., Express, NestJS) solid understanding of integrating web applications with AWS services (e.g., Cognito, API Gateway, S3, CloudFront) experience working with containerized environments (ECS, EKS, Fargate) is a strong advantage hands-on experience with authentication mechanisms (OAuth, OIDC, JWT) strong debugging and problem-solving skills, especially across frontend-backend integrations experience with automated testing tools (e.g., Jest, Cypress, Playwright) and CI/CD pipelines familiarity with Git-based workflows and modern development practices excellent communication skills and ability to work in a collaborative, consulting-oriented environment We offer Rate up to 160,00 PLN /h + VAT Remote work Subsidy for peripherals in the amount of 500,00zł Working tool (MacBook Pro or Lenovo Legion 5) Co-financing of courses related to the position Benefits: MultiSport, Medicover

🏢 Summary: The offer is for a Senior Front-end Developer responsible for building and maintaining modern web applications using React and Angular in an international, agile environment. The role focuses on developing new features, optimizing performance, ensuring high code quality through testing, and contributing to architectural decisions. It also involves working with APIs, real-time solutions, and CI/CD processes. 🗂️ Requirements: Minimum 5 years of experience as Front-end Developer, Strong knowledge of JavaScript (ESNext), Strong knowledge of TypeScript, Commercial experience with React, Commercial experience with Angular (2+), Strong knowledge of HTML and CSS, Experience with Responsive Web Design, Experience with REST or GraphQL APIs, Experience with testing frameworks, Experience with Docker, Experience with CI/CD tools, Understanding of application architecture, Experience with performance optimization, Good command of English 📃 Skills: JavaScript, TypeScript, React, Angular, HTML, CSS, RWD, REST, GraphQL, WebSockets, Jest, Vitest, Playwright, Cypress, Docker, Azure, CI/CD 🏢 Description: Working as a Senior Front-end Developer, you will: Design, develop, and maintain modern web applications using React and Angular (2+) Build new features and continuously improve existing functionalities Ensure high quality of code through testing (unit, integration, and end-to-end) Collaborate closely with cross-functional, international teams (developers, designers, Product Owners, domain experts) Contribute to architectural decisions and application performance optimization Work with APIs (REST, GraphQL) and real-time solutions (e.g. WebSockets) Support debugging and troubleshooting, including bug fixing when needed Create and maintain technical documentation Participate in agile development processes and CI/CD practices About Chabre IT Services Chabre IT Services is a global professional IT services provider, building long-lasting relationships with Enterprises. We specialize in the delivery of tailor-made solutions,  smart outsourcing, try&hire, and success fee services. We are a smart IT boutique with unique knowledge, which will deliver your ideas into reality. About our Client Our client is an international organization delivering advanced digital solutions in the areas of environmental analysis, engineering, and sustainability. They combine scientific expertise with modern technology to support global initiatives related to water and environmental management. The company operates in a highly collaborative, international environment and focuses on building impactful, data-driven products used worldwide. Qualifications At least 5 years of professional experience as a Front-end Developer Strong knowledge of JavaScript (ESNext) and TypeScript Solid experience with React and its ecosystem Experience with Angular (2+) Strong understanding of HTML, CSS, and Responsive Web Design (RWD) Good understanding of browser differences and application performance optimization Experience with testing frameworks (Jest, Vitest, Playwright, Cypress, or similar) Experience working with APIs (REST, GraphQL) Familiarity with Docker Experience with CI/CD tools (e.g. Azure DevOps) Strong understanding of application architecture and system stability Good command of English (both spoken and written) We offer Rate up to 150,00 PLN /h + VAT Remote/Hybrid work (occasional visits to the office in Rzeszów) Subsidy for peripherals in the amount of 500,00zł Working tool (MacBook Pro or Lenovo Legion 5) Co-financing of courses related to the position Benefits: MultiSport, Medicover

🏢 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: The offer is for a Frontend Engineer to design and build modern, secure user interfaces for an identity and access management platform. The role focuses on implementing authentication-related flows, integrating with Auth0 and REST APIs, and developing reusable, well-tested components using modern frontend practices. You will contribute to scalable, accessible, cloud-based applications in a collaborative Agile environment. 🗂️ Requirements: Strong commercial experience with TypeScript, Strong commercial experience with React, Experience building secure authentication flows (login, onboarding, account management), Hands-on experience with Storybook and component-driven development, Experience with automated testing (unit, integration, E2E), Experience integrating with Auth0 or other CIAM solutions, Solid understanding of REST API integration, Experience delivering scalable cloud-based web applications, Understanding of accessibility standards and tools, Experience working in Agile environments 📃 Skills: TypeScript, React, Auth0, CIAM, REST, Storybook, Vitest, Playwright, Testing, Accessibility, axe-core, Cloud, Agile 🏢 Description: Working as a Frontend Engineer, you will: design and develop modern front-end interfaces for an identity and access management platform implement user-facing flows such as login, onboarding, and account management integrate UI layers with authentication services (e.g. Auth0) and backend APIs collaborate closely with IAM and backend engineers to deliver cohesive, secure solutions build and maintain a reusable component library using Storybook ensure high code quality through automated testing (unit, integration, E2E) develop accessible applications, leveraging tools like axe-core for compliance contribute to improving UI consistency and developer experience across the platform participate in architectural discussions and propose front-end best practices support continuous improvement through knowledge sharing and collaboration About Chabre IT Services Chabre IT Services is a global professional IT services provider, building long-lasting relationships with Enterprises. We specialize in the delivery of tailor-made solutions,  smart outsourcing, try&hire, and success fee services. We are a smart IT boutique with unique knowledge, which will deliver your ideas into reality. About our Client Our client is a global technology and consulting organization delivering complex digital transformation initiatives for enterprise clients. They specialize in combining advisory, delivery, and managed services to drive measurable business outcomes. Qualifications strong commercial experience with TypeScript and React proven experience building secure authentication flows (login, onboarding, account management) hands-on experience with Storybook and component-driven development experience with automated testing tools such as Vitest, React Testing Library, and Playwright (or similar) experience integrating front-end applications with Auth0 or other CIAM solutions solid understanding of REST API integration experience delivering scalable, cloud-based web applications good understanding of accessibility standards and tools (e.g. axe-core) strong problem-solving and communication skills experience working in collaborative, Agile environments familiarity with identity and access management concepts is a plus We offer Rate: 140 - 160 PLN /h + VAT Remote work Subsidy for peripherals in the amount of 500,00zł Working tool (MacBook Pro or Lenovo Legion 5) Co-financing of courses related to the position Benefits: MultiSport, Medicover

🏢 Summary: The offer is for a Principal Software Engineer to lead technical strategy and architecture for a high-impact US-based project, with strong hands-on involvement in .NET and Azure environments. The role combines senior-level technical leadership, system design ownership, and the integration of AI/GenAI capabilities into products and engineering workflows. It requires operating strategically within complex global structures while driving scalable, secure solutions. 🗂️ Requirements: Extensive experience as Principal Engineer or senior engineering leader, Strong hands-on expertise in .NET, Strong hands-on expertise in Azure, Proven experience in large, complex global organizations, Practical experience with AI and GenAI solutions, Strong architectural and system design experience, Ability to define technical strategy and architecture, Experience mentoring senior engineers, English proficiency at C1 level 📃 Skills: .NET, Azure, AI, GenAI, Architecture, SystemDesign 🏢 Description: Working as a Principal Software Engineer, you will: Lead and drive technical strategy for a high-impact US-based project within the Sightline domain Operate at a senior leadership level, partnering with stakeholders across a complex, global organization Provide hands-on technical guidance in .NET and Azure environments, ensuring scalable and secure solutions Champion the adoption and integration of AI and GenAI capabilities across the product and engineering workflows Collaborate with cross-functional teams to define architecture, technical direction, and best practices Act as a key decision-maker in system design, balancing business needs with technical excellence Mentor senior engineers and support the growth of engineering teams Navigate and influence large organizational structures, ensuring alignment across multiple stakeholders Communicate effectively with both technical and non-technical audiences, translating complex concepts into clear insights Contribute to building a strong engineering culture focused on innovation, collaboration, and continuous improvement About Chabre IT Services Chabre IT Services is a global professional IT services provider, building long-lasting relationships with Enterprises. We specialize in the delivery of tailor-made solutions,  smart outsourcing, try&hire, and success fee services. We are a smart IT boutique with unique knowledge, which will deliver your ideas into reality. About our Client Our client is a global technology and management consultancy specializing in driving digital transformation in the financial services industry. It operates at the intersection of business and technology by combining innovative thinking with unrivalled industry knowledge to deliver endto-end data-driven solutions and fast-track digital initiatives for banking and payments, capital markets, wealth and asset management, insurance, and the energy sector. Qualifications Extensive experience as a Principal Engineer, Engineering Manager, or Senior Manager-level leader Strong hands-on expertise in .NET and Azure Proven experience working in large, global organizations with complex structures (e.g., companies like PwC or similar) Solid understanding and practical experience with AI/GenAI solutions and their application in software development Strong architectural and system design experience Excellent communication skills, with the ability to engage confidently with diverse stakeholders Balanced personality: communicative and open, yet thoughtful and professional Experience mentoring and influencing senior engineers and technical teams Ability to operate strategically while remaining close to the technology English proficiency at C1 level We offer Rate up to 180,00 PLN /h + VAT Remote work Subsidy for peripherals in the amount of 500,00zł Working tool (MacBook Pro or Lenovo Legion 5) Co-financing of courses related to the position Benefits: MultiSport, Medicover

🏢 Summary: The offer is for a Principal Software Engineer to lead technical strategy and architecture for a high-impact US-based project within the Sightline domain. The role combines hands-on development in .NET and Azure with strategic leadership, driving scalable, secure solutions and integrating AI/GenAI capabilities. It involves system design ownership and guiding engineering teams in complex, global environments. 🗂️ Requirements: Extensive experience as Principal Engineer or Engineering Manager, Strong hands-on experience with .NET, Strong hands-on experience with Azure, Proven experience in large, complex global organizations, Practical experience with AI and GenAI in software development, Strong architecture and system design expertise, Ability to lead technical strategy and system design decisions 📃 Skills: .NET, Azure, AI, GenAI, Architecture, SystemDesign, Cloud, C# 🏢 Description: Working as a Principal Software Engineer, you will: Lead and drive technical strategy for a high-impact US-based project within the Sightline domain Operate at a senior leadership level, partnering with stakeholders across a complex, global organization Provide hands-on technical guidance in .NET and Azure environments, ensuring scalable and secure solutions Champion the adoption and integration of AI and GenAI capabilities across the product and engineering workflows Collaborate with cross-functional teams to define architecture, technical direction, and best practices Act as a key decision-maker in system design, balancing business needs with technical excellence Mentor senior engineers and support the growth of engineering teams Navigate and influence large organizational structures, ensuring alignment across multiple stakeholders Communicate effectively with both technical and non-technical audiences, translating complex concepts into clear insights Contribute to building a strong engineering culture focused on innovation, collaboration, and continuous improvement About Chabre IT Services Chabre IT Services is a global professional IT services provider, building long-lasting relationships with Enterprises. We specialize in the delivery of tailor-made solutions,  smart outsourcing, try&hire, and success fee services. We are a smart IT boutique with unique knowledge, which will deliver your ideas into reality. About our Client Our client is a global technology and management consultancy specializing in driving digital transformation in the financial services industry. It operates at the intersection of business and technology by combining innovative thinking with unrivalled industry knowledge to deliver endto-end data-driven solutions and fast-track digital initiatives for banking and payments, capital markets, wealth and asset management, insurance, and the energy sector. Qualifications Extensive experience as a Principal Engineer, Engineering Manager, or Senior Manager-level leader Strong hands-on expertise in .NET and Azure Proven experience working in large, global organizations with complex structures (e.g., companies like PwC or similar) Solid understanding and practical experience with AI/GenAI solutions and their application in software development Strong architectural and system design experience Excellent communication skills, with the ability to engage confidently with diverse stakeholders Balanced personality: communicative and open, yet thoughtful and professional Experience mentoring and influencing senior engineers and technical teams Ability to operate strategically while remaining close to the technology English proficiency at C1 level We offer Rate up to 180,00 PLN /h + VAT Remote work Subsidy for peripherals in the amount of 500,00zł Working tool (MacBook Pro or Lenovo Legion 5) Co-financing of courses related to the position Benefits: MultiSport, Medicover

🏢 Summary: Senior Software Engineer role focused on developing and maintaining a complex enterprise .NET platform, combining backend development, production troubleshooting, and performance optimization. The position involves working on identity-related systems and improving architecture, reliability, and code quality within a large-scale environment. The engineer will contribute to technical decisions and future platform evolution. 🗂️ Requirements: 5+ years commercial experience with C# and .NET, Strong knowledge of ASP.NET Core, Experience with asynchronous programming, Experience with dependency injection, Hands-on experience with Entity Framework Core, Strong understanding of SQL Server, Experience with query optimization, Experience with OAuth2, Experience with OpenID Connect, Experience with JWT, Experience supporting and troubleshooting production systems, Fluent English 📃 Skills: C#, .NET, ASP.NET, EntityFramework, SQLServer, OAuth2, OpenIDConnect, JWT, IdentityServer, Duende, ActiveDirectory, AzureAD, MicrosoftGraph, Quartz.NET, SignalR, Playwright, AzureDevOps, CI/CD 🏢 Description: We are looking for an experienced Senior Software Engineer to develop and maintain a complex enterprise .NET platform used by global organizations. This role combines backend development , production troubleshooting , performance optimization , and work on identity-related systems . 💼 Responsibilities: Design, develop, and maintain backend services built with C# and .NET Investigate and resolve complex production issues and customer-reported problems Optimize application performance, database queries, and system reliability Collaborate with Product, Support, and Engineering teams on technical solutions Improve architecture, code quality, and engineering standards Participate in technical discussions and contribute to future platform development ✅ Requirements: 5+ years of commercial experience with C# and .NET Strong knowledge of ASP.NET Core and modern .NET applications Experience with asynchronous programming and dependency injection Hands-on experience with Entity Framework Core Good understanding of SQL Server, query optimization, and database performance Experience with OAuth2, OpenID Connect, JWT Experience supporting and troubleshooting production systems Fluent English communication skills 🌟Nice to have: Experience with IdentityServer / Duende IdentityServer Understanding of Active Directory, Azure AD or Microsoft Graph Hands-on experience with Quartz.NET or similar scheduling frameworks Familiarity with SignalR, Playwright, Azure DevOps and CI/CD pipelines 🎁 We offer: Work on a mature enterprise product used globally Influence technical decisions and platform evolution Private healthcare Life insurance Multisport Opportunity to work with modern .NET technologies and large-scale systems

🏢 Summary: Senior Backend Engineer role focused on designing and developing cloud‑enabled web applications, APIs, and digital twin solutions for large-scale data center environments using Azure and NVIDIA Omniverse. The position involves full software development lifecycle responsibilities and collaboration with international teams on global simulation and visualization platforms. 🗂️ Requirements: 7+ years of experience in software development with .NET / .NET Core, Strong C# and .NET programming skills, Experience with REST API development, Experience with Entity Framework or other ORM, Knowledge of relational and non-relational databases, Experience with SQL Server, Experience with Azure cloud services, Proficiency with Git or similar version control systems, Experience processing large datasets, Knowledge of Infrastructure as Code (Terraform preferred) 📃 Skills: C#, .NET, .NETCore, REST, EntityFramework, SQLServer, Azure, AppServices, AzureSQL, AzureFunctions, ServiceBus, Git, Terraform, Omniverse, ORM 🏢 Description: We are seeking a Senior Backend Engineer who will work with local teammates as well as collaborate closely with our U.S.-based project management and development teams, contributing to the design and implementation of modern cloud‑enabled web applications, APIs, and digital twin solutions for large‑scale data center environments. This is a unique opportunity to work on global projects, leverage cutting‑edge technologies such as Azure Cloud and NVIDIA Omniverse APIs, and help shape the future of our next‑generation simulation and visualization platforms. Key Responsibilities Develop and maintain applications using .NET / .NET Core, and Azure cloud services Contribute to the development of digital twin components, including data ingestion, simulation logic, and integration with Omniverse APIs Collaborate with project managers and developers to ensure alignment with client requirements Participate in all stages of the software development lifecycle: design, coding, testing, debugging, and documentation Write clean, efficient, secure, and maintainable code following best practices Liaise with system analysts and business owners to refine requirements and improve applications Work with Azure services such as App Services, Azure SQL, Azure Functions, or Service Bus (depending on project needs) Requirements 7+ years of experience in software development (.NET / .NET Core, Entity Framework (or other ORM), REST APIs)) Strong C# / .NET programming skills and design principles Familiarity with relational/non relational database design and development (SQL Server preferred) Knowledge of Entity Framework or other ORM tools Proficiency with GitHub or similar version control systems Experience with processing large amounts of data Strong English communication skills, both spoken and written, enabling clear explanation of technical topics Ability to work independently and in a collaborative team environment Knowledge of IaC (Terraform preferred) Ideally You’ll Also Have Interest or experience in cloud‑based simulation, IoT, or digital twin technologies Exposure to Agile methodologies (Scrum) Microsoft Certified Developer Associate or Azure certification We offer Rewarding employment: Full-time employment with a salary that matches your qualifications Hybrid work model: Enjoy the flexibility of working from home, with just several office days per month Flexible hours: Start your day anytime between 7:30 and 10:00 AM Comprehensive benefits: Including Lux Med medical care, psychological support, life insurance, My Benefit cafeteria system, Multisport card co-financing, and a car/bike park sharing system Co-financed holidays: Enjoy "Wczasy pod Gruszą" for a well-deserved break Global projects: Engage in exciting international projects Inclusive networks: Join our diverse employee networks like Women's Network, OneWorld, PRISM, Careers Network, Green Team, SpeakUp, Collectively, and more Continuous learning: Participate in our Graduate Development Program, Learners’ Community, and self-learning platforms Language courses: Enhance your skills with courses in English, German, and Polish