AI Lead (with .Net)

🏢 Summary: Long-term remote role for a Senior .NET Developer with AI expertise to design and deliver AI-driven solutions within the Microsoft ecosystem. The position focuses on building and deploying AI agents in Microsoft Teams and integrating solutions with Azure AI and OpenAI services. The role covers end-to-end development, deployment, and production support of scalable intelligent systems. 🗂️ Requirements: Strong experience with C# and .NET, Proven experience building AI solutions in Microsoft ecosystem, Hands-on implementation of AI agents in Microsoft Teams, Experience with Azure AI, OpenAI, Cognitive Services, M365, Understanding of agent-based architecture and AI design patterns, Experience deploying and supporting production-grade solutions, Basic frontend experience with React or similar, Ability to work in English and Polish 📃 Skills: C#, .NET, Azure, OpenAI, CognitiveServices, M365, MicrosoftTeams, React, AI, AgentArchitecture 🏢 Description: We are looking for a Senior .NET Developer with AI experience to design and deliver cutting-edge solutions within the Microsoft ecosystem. This role is ideal for someone who combines strong backend engineering in C#/.NET with hands-on AI expertise , particularly in building and deploying AI agents Location: Remote Language: Polish and English Key Responsibilities Design and develop scalable AI-driven solutions using C# / .NET Build and deploy AI agents within Microsoft Teams (end-to-end ownership) Develop and implement agent-based architectures and intelligent systems Integrate solutions with Azure AI, OpenAI, and Microsoft services Deploy, monitor, and support solutions in production environments Collaborate with business and product teams to translate requirements into technical solutions Drive best practices in AI engineering, performance, and scalability Required Skills & Experience Strong experience as a .NET Developer (C#) – must-have Proven experience building AI solutions within Microsoft ecosystem Hands-on experience implementing AI agents in Microsoft Teams (critical requirement) Experience with Azure AI / OpenAI / Cognitive Services / M365 Understanding of agent-based architecture and AI design patterns Basic frontend experience ( React or similar ) Experience deploying and supporting production-grade solutions Strong problem-solving mindset and ability to work in fast-paced environments This is an long term project !!! If interested and available please send your CV for an immiediate consideration

🏢 Summary: Senior Fullstack Engineer role focused on delivering full-stack solutions within an AI-integrated SDLC where AI is embedded across planning, development, review, testing, and deployment. The position combines backend and frontend engineering with AI orchestration, automation, and cloud-native architecture in a remote-first setup. The engineer will also evolve shared AI toolchains and contribute to architectural and code quality standards. 🗂️ Requirements: Team-level AI-integrated SDLC experience across planning, development, review, testing, deployment, Shared AI toolchain management under version control, Hands-on use of Claude Code, GitHub Copilot, Cursor or equivalent as team tools, Building and maintaining custom AI skills and sub-agents for team use, Experience with parallel AI agent orchestration, Spec-driven development using OpenAPI, ADRs, PRDs as AI context, AI-assisted code review integrated into PR process, Working knowledge of AI orchestration frameworks, Backend development with .NET / C# and ASP.NET Core, Frontend development with TypeScript and React or Angular, Experience with SQL databases and ORM frameworks, Experience with Docker and Kubernetes, Experience with CI/CD pipelines, Experience with cloud platforms (Azure, AWS, or GCP) 📃 Skills: C#, .NET, ASP.NET, SQL, SQLServer, PostgreSQL, EFCore, OAuth, JWT, Python, Java, Node.js, TypeScript, JavaScript, React, Angular, LangChain, LlamaIndex, CrewAI, Docker, Kubernetes, GitHubActions, AzureDevOps, Azure, AWS, GCP, OpenAPI, CQRS, DDD, EventSourcing, Microservices 🏢 Description: We are looking for a Senior Fullstack Engineer who combines deep technical expertise with real, team-level experience working in an AI-integrated software development lifecycle. Individual use of AI coding assistants is not sufficient for this role. We are specifically looking for engineers who have worked in teams where AI was embedded into every phase of delivery — from planning and design through development, review, testing, and deployment. We follow a remote-first setup with no mandatory regular office visits for this position. From time to time, you may be invited to join in-person meetings in one of our offices (Warsaw, Lodz, Wroclaw, Gdansk, or Bialystok), for example for client visits or team reunions. AI-First Requirements Experience working in an AI-enabled engineering team is mandatory — not a personal workflow preference. You have been part of a team where AI was systematically embedded across all delivery phases: planning, development, review, testing, and deployment. You can speak from direct experience about how it worked, what failed, and what you would change. Specific mandatory requirements: Team-level AI-integrated SDLC experience — shared toolchain, shared configurations, shared assets under version control Hands-on with Claude Code, GitHub Copilot, Cursor, or equivalent as a team tool, not only personal usage Built and maintained custom skills and sub-agents used across a team, not just personally Experience with parallel agent orchestration for concurrent workstream execution Disciplined plan → review plan → execute approach with AI involved at every phase Maintained shared prompt libraries, skill repositories, or agent configurations in version control AI-assisted code review integrated into the PR process: CodeRabbit, Copilot review, or similar Experience with spec-driven or document-driven development where structured specifications (OpenAPI, ADRs, PRDs) serve as AI context inputs, not just human references Working knowledge of at least one AI orchestration framework: LangChain, LlamaIndex, Microsoft Agent Framework, CrewAI, or equivalent Automation-first mindset: proactively identify repetitive or inefficient parts of current work and automate them using AI and other available tools. Cost-aware AI usage: understanding how AI credits are consumed across different tools, models, and workflows, and ability to choose the most appropriate model or approach for each task. Technical Requirements Backend: .NET / C#, ASP.NET Core, SQL Server / PostgreSQL, EF Core, OAuth 2.0 / JWT. Python, Java, or Node.js is a strong plus. Frontend: TypeScript, JavaScript, React(preferable) and/or Angular, state management, async patterns, frontend testing. Architecture: Full spectrum from monolith to microservices — DDD, CQRS, Event Sourcing, event-driven design, message brokers. Infrastructure: Docker, Kubernetes, CI/CD (GitHub Actions / Azure DevOps), Azure / AWS / GCP, structured observability. Responsibilities Deliver full-stack features to a high standard of quality, performance, and reliability Contribute to architectural decisions and system design trade-offs Evolve and maintain the team's shared AI toolchain across all SDLC phases Conduct code reviews including AI-assisted tooling; uphold and enforce engineering best practices Proactively surface risks, bottlenecks, and security concerns Communicate and collaborate directly with clients in English Mentor engineers on both technical fundamentals and AI-augmented workflow practices Professional Qualities Ownership mindset · Strong written and verbal English · Comfortable in client-facing roles · Raises the AI workflow maturity of those around them

🏢 Summary: Remote .NET Developer role focused on building and maintaining applications enhanced with AI functionalities. The position involves collaborating on software design, improving AI performance, and ensuring code quality through reviews and best practices. Requires hands-on experience in .NET and practical knowledge of AI technologies. 🗂️ Requirements: Proven experience in .NET development, Practical experience with AI technologies, Knowledge of machine learning concepts, Mid-senior level software development experience, Ability to develop and maintain .NET applications, Experience with debugging and performance optimization 📃 Skills: .NET, C#, AI, MachineLearning, Python, Java, Cloud, Agile 🏢 Description: We are seeking a skilled .NET Developer with experience in Artificial Intelligence (AI) to join a dynamic team. The ideal candidate will exhibit proficiency in .NET development and possess a practical understanding of AI technologies. This position is remote, providing flexibility, with occasional required visits to the office in Trofa. Main Responsibilities Develop and maintain .NET applications with AI functionalities. Collaborate with cross-functional teams to design software solutions. Conduct code reviews and implement best practices. Assess and improve performance of AI implementations. Participate in debugging and troubleshooting processes. Key Requirements Proven experience in .NET development. Familiarity with AI and machine learning technologies. Strong problem-solving skills and attention to detail. Mid-senior level proficiency in software development. Ability to work effectively in a remote environment. Nice to Have Experience with cloud services. Familiarity with Agile methodologies. Additional programming skills in languages such as Python or Java.

🏢 Summary: Senior AI-first Engineer role focused on building and modernizing full-stack systems using advanced AI-assisted development workflows. The position involves designing scalable architectures, delivering production-grade .NET and React solutions, and orchestrating multiple AI agents for parallel task execution. Work spans distributed systems, cloud environments, and high-quality engineering practices in client-facing projects. 🗂️ Requirements: Hands-on experience with AI coding assistants (Claude Code, GitHub Copilot, Cursor or equivalent), Ability to build custom AI skills and orchestrate multiple AI agents in parallel, Strong prompt engineering with critical evaluation of AI-generated output, Production experience with .NET and C# for REST APIs and middleware, Deep knowledge of OAuth2, OpenIDConnect, and JWT, Strong proficiency in JavaScript and TypeScript, Minimum 2 years production experience with React, Experience with state management, asynchronous patterns, and frontend testing, Experience designing monolith, microservices, and distributed architectures, Knowledge of DDD, CQRS, EventSourcing, and event-driven systems, Experience with message brokers (Kafka, RabbitMQ, AzureServiceBus or similar), Hands-on experience with Docker and knowledge of Kubernetes, Experience with CI/CD pipelines, Experience with cloud platforms (Azure, AWS, or GCP), Strong knowledge of SQL and ORM tools 📃 Skills: C#, .NET, REST, OAuth2, OpenIDConnect, JWT, JavaScript, TypeScript, React, DDD, CQRS, EventSourcing, Kafka, RabbitMQ, AzureServiceBus, Docker, Kubernetes, GitHubActions, AzureDevOps, Azure, AWS, GCP, SQL, NoSQL, Python, Java, Node.js, Copilot, Claude, Cursor 🏢 Description: We are looking for a Senior AI-first Engineer who combines deep technical expertise with a genuine, hands-on approach to AI-assisted development. You will work across varied client engagements — from modernizing legacy systems to architecting new products — and are expected to contribute at a high level regardless of project context. The ideal candidate has built a real, personalized AI development workflow — including custom skills, reusable prompt templates, and project-level instructions — and continues to refine it. Out-of-the-box tool usage is not sufficient for this role. We follow a remote-first setup with no mandatory regular office visits for this position. From time to time, you may be invited to join in-person meetings in one of our offices (Warsaw, Lodz, Wroclaw, Gdansk, or Bialystok), for example for client visits or team reunions. Responsibilities Design, develop, and maintain full-stack features with high standards of quality, performance, and reliability Apply AI tools throughout the workflow: generation, refactoring, review, testing, and research Contribute to architectural decisions — technology selection, system design, and trade-off analysis Conduct thorough code reviews and uphold engineering best practices across the team Identify risks, bottlenecks, and security concerns proactively and propose solutions Work directly with clients in English — requirements clarification, technical discussions, progress updates Mentor junior and mid-level engineers through day-to-day guidance and knowledge sharing Stay current with AI tooling developments and contribute findings to the broader team Requirements Hands-on experience with Claude Code, GitHub Copilot, Cursor, or equivalent AI coding assistants Ability to create custom skills and sub-agents and orchestrate multiple AI agents in parallel for concurrent task execution Strong prompt engineering skills; able to produce reliable, high-quality output and critically evaluate AI-generated results Production-grade .NET / C# (REST APIs, middleware, dependency injection) with solid understanding of OAuth 2.0, OpenID Connect, and JWT Deep proficiency in JavaScript and TypeScript 2+ years of hands-on production experience with React (highly preferable) and/or Angular Strong grasp of state management, asynchronous patterns, and frontend testing Confident designing systems across monoliths, microservices, and distributed architectures Working knowledge of DDD, CQRS, Event Sourcing, and event-driven systems, including message brokers (Kafka, RabbitMQ, Azure Service Bus, or similar) Hands-on use of Docker and working knowledge of Kubernetes, along with CI/CD pipelines (GitHub Actions, Azure DevOps, or similar) Experience with cloud platforms (Azure, AWS, or GCP) and observability practices (structured logging, distributed tracing, alerting) Solid background with SQL databases and ORMs; familiarity with NoSQL is a plus Additional exposure to Python, Java, or Node.js is highly desirable Clear communication skills in English (B2+), both written and spoken; comfortable in client-facing environments Salary ranges B2B 135 - 195 PLN/ hour EC 17000 - 24000 PLN/ month

🏢 Summary: The role involves developing and maintaining web-based legal practice management solutions in a SaaS model using .NET technologies. You will participate in full software development lifecycle activities including design, implementation, code reviews, and testing in an international environment. The position focuses on building high-quality web applications and improving products through collaboration and modern development practices. 🗂️ Requirements: 2–3 years of experience in C# development, Experience with web technologies, Ability to use AI-assisted development tools, Basic knowledge of SQL 📃 Skills: C#, .NET, SQL, Git, Jira, TeamCity, Confluence, Bitbucket, MicrosoftSQLServer, Agile, UnitTesting, Web, GitHubCopilot 🏢 Description: Advisor Systems supplies innovative legal practice management system for law firms delivered in a SaaS model. In relations with our clients, we perceive ourselves not only as a software supplier, but most of all, as a partner and an advisor in implementing effective solutions. We operate within the Norwegian capital group Advisor with over 60 employees working in our offices in Norway, Poland and Sweden. Our team consists of professional, harmonious and enthusiastic people. Over the last 20 years we have delivered over 1000 implementations. We are renowned for providing excellent service to our customers. As a .NET Developer you will: Work in an international environment Actively participate in the design and development of web solutions Take part in code reviews, feature discussions, and sprint planning meetings Collaborate with the Product Manager and Support Team on improvements and enhancements to our products Develop and maintain unit and integration tests Required skills & experience: At least 2–3 years of experience in C# development and web technologies Ability to effectively use AI-assisted development tools (e.g. GitHub Copilot) to improve productivity and code quality Basic knowledge of SQL English proficiency at B2 level or higher Additional skills that are welcome: Knowledge of the Microsoft SQL Server environment Experience with Git, Jira, TeamCity, and Confluence Understanding of Agile software development methodologies Experience in writing unit tests Work with Git (we use Bitbucket) We offer: Remote work Work in a cooperative and respectful atmosphere Modern office located in the center of Gdynia Additional bonus package (Private Healthcare, Multisport, access to a book library and e-learning platforms) Recruitment Process: We review and evaluate whether your CV matches our requirements. A short introductory phone call. Completion of the test that takes approximately 60 minutes. If the test result is positive, we invite you to a 60-minute interview conducted via Microsoft Teams. Final decision and feedback.

🏢 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: Lead AI Software Developer role focused on architecting and scaling AI-powered applications, backend systems, and multi-agent workflows across cloud and enterprise environments. The position involves designing secure integrations, optimizing LLM-based solutions, and leading technical delivery and best practices. It combines hands-on AI development with backend architecture and technical leadership. 🗂️ Requirements: Degree in Computer Science, AI, Data Science or related field, 8+ years of software engineering experience, 5+ years of Python backend development in production, Experience building and scaling Python applications, Hands-on experience with AI Agents, RAG and MCP, Experience with AWS or Azure cloud platforms, Experience with storage systems and databases, Knowledge of containerization and Kubernetes, Experience with API integrations and enterprise system connectivity, Leadership and mentoring experience 📃 Skills: Python, AWS, Azure, Kubernetes, RAG, MCP, APIs, Cloud, Databases, Containerization, AI, LLM 🏢 Description: We are seeking an experienced Lead AI Software Developer to design and scale AI-powered applications and integrations. In this role, you will architect backend systems, lead AI agent development, and ensure secure, scalable integration across cloud platforms and enterprise systems. Key Responsibilities Design and maintain middleware, APIs, and connectors integrating AI agents with enterprise systems Architect scalable backend services and cloud-based solutions (AWS/Azure) Develop and optimize multi-agent workflows and adaptive decision logic Fine-tune prompts and LLM-based solutions for domain-specific use cases Lead code reviews, mentor developers, and define development best practices Drive complex API integrations with internal and external AI platforms (incl. MCP servers) Remove technical roadblocks and ensure timely delivery Collaborate with AI, Data, and Platform teams to optimize automation architectures Maintain technical documentation and promote continuous improvement Requirements Degree in Computer Science, AI, Data Science, or similar field 8+ years of software engineering experience, including 5+ years of Python backend development (production) Strong experience building and scaling Python applications Hands-on experience with AI technologies (AI Agents, RAG, MCP) Experience with cloud platforms (AWS or Azure), storage, databases, and AI services Knowledge of containerization and Kubernetes Experience with API integrations and enterprise system connectivity Strong leadership and mentoring experience Excellent communication skills; fluent in Polish and English (min. B2); German is a plus Willingness to travel internationally (~10%) Nice to have: Experience with LangChain, LangGraph, multi-agent systems, prompt engineering, and LLM fine-tuning. What We Offer Work in a global and innovative technology environment Direct impact on enterprise AI and automation solutions Professional development and access to training programs Hybrid work model with flexible hours (central Wroclaw office) Competitive benefits package, cafeteria system, CSR initiatives, and employee clubs

🏢 Summary: Long-term remote contract for a Senior AI .NET Developer focused on designing, developing, and integrating scalable multi-agent AI solutions in the banking sector. The role involves building production-grade C# applications, integrating AI with enterprise and banking systems, and deploying secure, compliant solutions on Azure. The project supports KYC, corporate onboarding, and due diligence processes. 🗂️ Requirements: Minimum 5 years of commercial experience in C# .NET, Experience building and maintaining production applications, Practical experience with LangChain, Practical experience with Microsoft Agentic Framework, Experience delivering and maintaining AI solutions on Azure, Daily experience working with Git, Ability to design scalable and secure solutions, Experience with enterprise system integration 📃 Skills: C#, .NET, Azure, LangChain, Microsoft, Agentic, Git, AI, KYC, AML 🏢 Description: Be in IT to firma rekrutacyjna, wyspecjalizowana w poszukiwaniu Specjalistów z branży technologii informatycznych. Obecnie, dla naszego klienta, poszukujemy osoby na stanowisko: Senior AI .NET Developer. Zakres obowiązków: Długofalowa współpraca z międzynarodową, topową firmą consultingową, świadczącą usługi IT dla dużych i średnich firm z różnorodnych sektorów. Osoba na tym stanowisku będzie odpowiedzialna za projektowanie, rozwój i integrację skalowalnych rozwiązań opartych o multi-agent AI, z naciskiem na bezpieczeństwo, zgodność regulacyjną oraz wysoką jakość rozwiązań produkcyjnych. Projektowanie, rozwój i integracja rozwiązań opartych o multi-agent AI Tworzenie komponentów AI wspierających procesy weryfikacji klientów Rozwój aplikacji produkcyjnych w technologii C# Integracja rozwiązań AI z istniejącymi systemami bankowymi i enterprise. Praca z frameworkami takimi jak LangChain oraz Microsoft Agentic Framework. Wdrażanie i utrzymywanie rozwiązań AI w środowisku Azure. Dbanie o skalowalność, bezpieczeństwo i zgodność rozwiązań z wymaganiami compliance. Współpraca z zespołami technicznymi, analitykami biznesowymi i interesariuszami po stronie klienta. Udział w projektowaniu architektury rozwiązań wspierających KYC i onboarding klientów korporacyjnych. Praca z repozytoriami kodu, code review i codzienne korzystanie z Git. Oczekujemy: Dla naszego klienta z sektora bankowego poszukujemy doświadczonego AI Developera, który dołączy do projektu związanego z wdrożeniem rozwiązań AI wspierających procesy KYC, onboarding klientów korporacyjnych oraz due diligence. Minimum 5 lat doświadczenia komercyjnego w C# .NET. Doświadczenie w budowaniu i utrzymywaniu aplikacji produkcyjnych. Praktyczna znajomość LangChain oraz Microsoft Agentic Framework. Doświadczenie w dostarczaniu i obsłudze chmurowych rozwiązań AI na Azure. Codzienna praca z Git. Umiejętność tworzenia skalowalnych, bezpiecznych i utrzymywalnych rozwiązań. Dobre rozumienie integracji systemów oraz pracy w środowisku enterprise. Mile widziane: doświadczenie w sektorze bankowym (np. KYC, AML). Znajomości języka angielskiego na poziomie B2 lub C1 – umożliwiającej swobodną komunikację w międzynarodowym środowisku. Mile widziana dostępność ASAP; akceptowalny jest maksymalnie miesięczny okres wypowiedzenia ze skutkiem na koniec miesiąca. Oferujemy: Długofalowa współpraca z wynagrodzeniem w przedziale 130-150 PLN netto/godz. + VAT. Wsparcie przy zakładaniu i prowadzeniu działalności gospodarczej, dla osób bez takiego doświadczenia. Sprawny proces rekrutacyjny - dwie rozmowy techniczne z managerami, online (każda maksymalnie po godzinie). Współpraca w pełni zdalna. Benefity - prywatna opieka medyczna, karta Multisport. Nowoczesny sprzęt zapewniany przez firmę, wraz z softem i konfiguracją.

🏢 Summary: B2B opportunity for an experienced .NET Back-End Developer to build modern, scalable cloud-based solutions using C# and Azure. The role focuses on designing high-performance services, working with CosmosDB, and collaborating in an Agile team with exposure to AI-assisted development tools. This is a fully remote position with competitive hourly rates and long-term cooperation. 🗂️ Requirements: 5+ years of professional experience in .NET development, Strong experience with C#, Proven experience with Azure services, Experience with CosmosDB, Experience with TypeScript or JavaScript, Bachelor’s degree in Computer Science or related field, Ability to align with US-based team working hours, English language proficiency 📃 Skills: .NET, C#, Azure, CosmosDB, TypeScript, JavaScript, AI, Playwright, Selenium, Drupal 🏢 Description: For our client from the technology and industrial solutions sector, we are looking for a .NET Back-End Developer to join a talented development team working on modern, scalable software solutions. Responsibilities: Design, develop, and maintain high-performance back-end services using .NET and C#. Work extensively with Azure cloud services and CosmosDB to build scalable and resilient solutions. Collaborate with front-end developers, product owners, and other team members to integrate back-end services. Participate in code reviews, architectural discussions, sprint planning, and other Agile ceremonies. Use modern development tools and practices to improve productivity, code quality, and maintainability. Explore and apply AI-assisted tools where appropriate to support development, documentation, troubleshooting, and workflow efficiency. Contribute to improving development processes, engineering practices, and team knowledge sharing. Be a proactive problem-solver and continuous learner, staying current with relevant technologies and industry trends. Requirements: Application Development Experience: 5+ years of professional experience in .NET development. Cloud Development Expertise: Proven experience with C#, Azure services, and CosmosDB. Scripting / Front-End Knowledge: Experience with TypeScript preferred, or JavaScript. AI Tool Familiarity: Interest in or hands-on experience using AI tools to support software development, productivity, documentation, research, or troubleshooting. Educational Background: Bachelor’s degree in Computer Science or a related field. Flexibility: Ability to align somewhat with US-based team working hours. Communication: English language proficiency. Stack: Cloud: Azure, CosmosDB Back-End: .NET, C# Scripting / Tooling: TypeScript preferred, JavaScript acceptable Productivity / AI Tools: Familiarity with AI-assisted development or productivity tools is a plus Nice to have: Domain Knowledge: Background in Electrical Engineering or a related technical field. Background or interest in analog and mixed-signal hardware design. Knowledge of hardware or system simulation concepts. CMS Knowledge: Familiarity with Drupal. Test Automation Exposure: Familiarity with tools like Playwright or Selenium. Quality Mindset: Prior QA experience or understanding of QA methodologies is welcome. Offer: Cooperation based on a B2B contract and rate: 140-170 PLN/hour 100% remote work The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client. Events and integration meetings, as well as participation in various initiatives, e.g., sports. Access to the benefits offering (medical care, Multisport card). About Speedapp At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch.

🏢 Summary: The offer is for a .NET Developer responsible for building and enhancing scalable backend systems and REST APIs for global travel platforms. The role involves contributing to architecture, optimizing performance, and collaborating in an agile environment to deliver reliable, high-quality software. It includes hybrid work, international projects, and professional development opportunities. 🗂️ Requirements: Minimum 3 years of commercial experience with .NET development, Strong knowledge of ASP.NET MVC, Experience developing REST APIs, Experience working in agile software development teams, Good knowledge of MS SQL, Good knowledge of Elasticsearch, Experience with CI/CD tools (Git, TeamCity or similar), Experience writing unit and integration tests, Ability to write clean, maintainable, and well-tested code, Very good English communication skills 📃 Skills: .NET, ASP.NET, MVC, REST, MS SQL, Elasticsearch, Git, TeamCity, CI/CD, UnitTesting, IntegrationTesting, Umbraco, Angular, AWS 🏢 Description: We are looking for a .NET Developer to join our team and help build scalable, high-quality solutions that power our global travel platforms. In this role, you will work on the development and enhancement of backend systems, contribute to architectural decisions, and collaborate with cross-functional teams to deliver reliable and efficient software used by customers worldwide. Your responsibilities Design, develop, and maintain applications using .NET technologies Translate business requirements into scalable and maintainable technical solutions Develop and enhance REST APIs and backend services Maintain, troubleshoot, and improve existing applications Refactor and optimize code to improve performance, scalability, and maintainability Write clean, well-structured, and testable code following best practices Participate in code reviews and contribute to improving development standards Identify and resolve performance bottlenecks and system issues Contribute to application architecture, technical design, and system documentation Collaborate closely with developers, QA engineers, Product Owners, and other stakeholders in an agile environment Our requirements At least 3 years of commercial experience with .NET development Strong knowledge of ASP.NET MVC and REST APIs Experience working within agile software development teams Good knowledge of MS SQL and Elasticsearch Experience with CI/CD tools and practices (Git, TeamCity or similar) Experience writing unit and integration tests Ability to write clean, maintainable, and well-tested code Very good English communication skills Nice to have Experience with Umbraco CMS Experience with Angular Knowledge of AWS services and cloud-based solutions How we work Clean Code principles Design patterns and software engineering best practices Code reviews and knowledge sharing Static code analysis Continuous Integration and Continuous Deployment (CI/CD) Agile and collaborative development environment What we offer Hybrid work model (1–2 days per week in our Katowice office) Opportunity to work on international, large-scale projects Attractive remuneration paid in EUR Flexible working hours Individual development budget Partially or fully funded training and certifications English lessons Mentoring and support from experienced technical leaders Participation in conferences in Poland and abroad A culture focused on learning, collaboration, and knowledge sharing Space to innovate and bring your own ideas to life Support for IT community initiatives