Jobs C# / .NET

Insiders is a fast-growing IT company which employs about 200 people. Our company focused on providing innovative digital services and cutting-edge technologies to solve complex business challenges.

We are located in Lviv and currently work in an office format. 

Requirements: Essential:

• Proficiency in .NET Core/Framework, ASP.NET, and ASP.NET Core for web application development.
• Strong knowledge and experience with C# programming language.
• Familiarity with Entity Framework (EF), EF Core, or any other ORM tool.
• Understanding and adherence to software development principles such as DRY, KISS, and YAGNI.
• Solid grasp of Object-Oriented Programming concepts.
• Understanding and application of SOLID principles in software design.
• Strong knowledge and usages of Design (Projecting) patterns.
• Proficiency in SQL for database operations.
• Familiarity with architectural patterns such as MVP, N-layer Architecture, Hexagonal Architecture, etc.
• Experience with version control systems like Git.
• Understanding of Continuous Integration (CI) and Continuous Deployment (CD) principles.
• Familiarity with basic DevOps practices such as automated testing, containerization, and deployment pipelines.
• Basic knowledge of Docker for containerization.

Desirable (Will be a Plus):

• Knowledge or experience with NoSQL databases such as MongoDB or Cassandra.
• Familiarity with front-end technologies like HTML, CSS, JavaScript, and frameworks like React or Angular.
• Experience with cloud platforms such as AWS, Azure, or Google Cloud Platform.
• Experience with automated testing frameworks such as NUnit or xUnit.

Additional Requirements:

• Excellent problem-solving skills and ability to work effectively within a team.
• Strong communication skills to collaborate with colleagues and stakeholders.
• Eagerness to learn new technologies and frameworks.
• Ability to adapt to changing project requirements and priorities.
• Attention to detail and commitment to writing clean, maintainable code.

What we offer:

- free study in our Corporate English Academy

- growth and development opportunities for young developers even if you have no commercial experience

- regular salary review (after the completion of each contract)

- provision of Apple equipment

- comfortable office with all amenities not far from the center (uninterrupted internet, generator, tea and coffee, pastries).

- timely payment of salaries.

- corporate events, teambuildings, etc.

- working on projects side by side with Senior developers, which will give you the opportunity to learn and develop.

Job Title:

Software Developer (Cross-Platform Agent Development)

Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

About the Product:

Our customer is an established international technology company developing a mature commercial software product used by organizations across different markets.

 

The product has been evolving for many years and combines well-established functionality with continuous development of new capabilities. The engineering organization is focused on extending the platform, improving existing areas, and gradually modernizing its technical foundations while maintaining the stability and quality expected from an established product.

 

Engineers work with a substantial production codebase and solve a broad range of technical challenges. The work requires understanding existing behavior, investigating complex problems, evaluating different approaches, and introducing improvements carefully without disrupting established functionality.

About the Role:

We are looking for a Software Developer to join our team and help develop a modern, cross-platform endpoint agent responsible for collecting device information, monitoring system activity, and communicating with the core platform.

You will work on software that runs directly on customer endpoints across Windows, Linux, and macOS, interacting with operating systems and system-level components. The role involves building reliable, high-performance software that operates continuously across large-scale customer environments.

You will participate in the full development lifecycle, from technical design and implementation to testing, troubleshooting, and production support.

Responsibilities

• Design, develop, and maintain cross-platform endpoint agent software using C# and .NET.
• Develop components and services that interact with Windows, Linux, and macOS operating systems.
• Implement system monitoring, data collection, process management, and event-handling capabilities.
• Develop efficient communication mechanisms between endpoint agents and backend services.
• Design modular, maintainable, and extensible software architectures.
• Work with asynchronous programming, multithreading, concurrency, and inter-process communication.
• Integrate with native operating system APIs and components where necessary.
• Optimize application performance, memory consumption, and resource utilization across different operating systems.
• Ensure agent reliability, stability, and resilience in different customer environments.
• Investigate and resolve complex technical issues, including performance and production-related problems.
• Develop automated unit, integration, and system tests across supported platforms.
• Collaborate with architects, developers, QA, DevOps, and product teams.
• Participate in code reviews and contribute to engineering standards and best practices.

Required Competence and Skills:

• Strong experience with C# and .NET development.
• Good understanding of object-oriented programming, SOLID principles, and software design patterns.
• Experience developing multi-threaded and asynchronous applications.
• Good understanding of operating system concepts, particularly processes, threads, memory management, services, and file systems.
• Experience developing software for at least one of the following operating systems: Windows, Linux, or macOS.
• Understanding of operating system APIs, background services, and process lifecycle management.
• Knowledge of networking fundamentals, including TCP/IP, HTTP, WebSockets, and gRPC.
• Experience with debugging, performance profiling, and troubleshooting complex software issues.
• Experience writing automated tests and building maintainable software.
• Familiarity with Git and CI/CD pipelines.
• Ability to work independently, analyze complex problems, and take ownership of technical solutions.

Nice to Have:

• Professional experience with cross-platform development targeting Windows, Linux, and macOS.
• Experience developing system agents, endpoint monitoring software, or background services.
• Knowledge of Windows internals and APIs.
• Knowledge of Linux internals, system services (systemd), and system APIs.
• Knowledge of macOS internals, system services (launchd), and macOS APIs.
• Experience with native development (C/C++, Objective-C, or Swift) and interoperability between managed and native code.
• Experience with inter-process communication (IPC), named pipes, RPC, sockets, or shared memory.
• Knowledge of distributed systems and event-driven architectures.
• Experience with message brokers such as Kafka.
• Experience with databases and local storage solutions.
• Familiarity with containerization and cloud-based environments.
• Experience working with large-scale distributed deployments and software update mechanisms.

Why Us:

We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in).

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

Ever wanted to be the engineer who modernizes the core of a real business?

Not just building features - but transforming a mission-critical ERP system that runs real operations, real money, and real workflows every day?

Where your code isn’t a side experiment, but the backbone of how a company operates?
Where you don’t rewrite for the sake of rewriting - but lead a thoughtful, long-term migration from legacy Delphi to modern .NET architecture?

If you enjoy deep systems, complex business logic, and long-term ownership of a large product - this role is built for you.
 

At AlphaDevs

We don’t just build remote teams - we build long-term engineering partnerships.
We work with product companies that care about stability, quality, and long-term evolution of their systems - not quick fixes.

This role is part of a long-term product engagement focused on maintaining and gradually modernizing a large ERP platform used in real business operations.

We are committed to supporting Ukraine 🇺🇦 and are hiring Ukrainian engineers only for this role.
No strong English is required - 90% of the team is Ukrainian, and daily communication happens in Ukrainian.
 

About the Product

You will work on a large, mature ERP system that:

• Has been developed and evolved over many years
• Contains complex business logic, data flows, and integrations
• Is mission-critical for daily operations
• Is planned for gradual migration from Delphi to modern .NET (C#) architecture

This is not a greenfield project - it’s real engineering on a real system with real impact.
 

The Role

We’re looking for a Senior Developer who can take ownership of:

• Maintaining and extending an existing Delphi-based ERP system
• Deeply understanding the legacy codebase and business logic
• Driving the future migration of the system to C# / .NET
• Bringing structure, documentation, and engineering discipline to a long-living product

This is a very long-term role with growth in responsibility, technical influence, and compensation.
 

What You’ll Do

• Develop new functionality on existing ERP products
• Maintain and improve a large Delphi codebase
• Gradually participate in the migration from Delphi to .NET (C#)
• Design and implement efficient algorithms and business logic
• Work with MSSQL databases and complex data models
• Produce proper documentation and technical reporting
• Collaborate closely with Ukrainian engineering teammates
   

What You Bring

• 15+ years of professional software engineering experience
• Strong mathematical thinking and algorithmic problem-solving skills
• Solid experience with Delphi and MS SQL
• Strong knowledge of OOP and understanding of MVC concepts
• Hands-on experience with C# and Microsoft .NET technologies
• Experience with ERP systems is a strong advantage
• Excellent analytical thinking and problem-solving mindset
• Team-oriented, self-driven, and responsible engineer
   

Qualifications & Eligibility

• Computer Science degree from a strong university with high academic performance
• Strong background in algorithms and data structures
• Ability to implement efficient logical solutions in code (technical test in C#)
• Strong communication skills within a technical team
   

What You Get

• Long-Term Stability: Work on a product designed for years of development
• Real Impact: Your code directly affects business operations
• Modernization Mission: Lead the transition from legacy to modern .NET
• Growth Path: Technical growth, increasing ownership, and salary progression
• Ukrainian Team: комфортна комунікація українською мовою
• Meaningful Work: Build systems that actually run companies, not just demos
   

Ready to Modernize a System That Matters?

If you want to work on deep engineering problems, own a large ERP platform, and lead the evolution from Delphi to modern .NET - join AlphaDevs and become part of a long-term product journey.
 

👉 Apply now - build systems that real businesses rely on every day.

Ever wanted to grow as an engineer on a real product - not pet projects or short-term tasks, but a system that real businesses rely on every day?
Where you don’t just “code features”, but gradually learn how large, mission-critical systems are built, maintained, and modernized?
Where you can gain hands-on experience with legacy systems and be part of a long-term transition to modern .NET architecture?

If you’re a Junior/Middle- level C# developer with around 2 years of experience and curiosity about real-world systems - this role is a great growth opportunity.
 

At AlphaDevs

We don’t just build remote teams - we build long-term engineering partnerships.
We work with product companies that value stability, quality, and sustainable technical evolution - not quick fixes.

This role is part of a long-term product engagement focused on maintaining and gradually modernizing a large ERP platform used in real business operations.

We are committed to supporting Ukraine 🇺🇦 and are hiring Ukrainian engineers only for this role.
No strong English is required - most of the team is Ukrainian, and daily communication happens in Ukrainian.
 

About the Product

You will work on a large, mature ERP system that:

• Has been developed and evolved over many years
• Contains complex business logic, data flows, and integrations
• Is mission-critical for daily operations
• Is planned for gradual migration from Delphi to modern .NET (C#) architecture

This is not a greenfield project - it’s real engineering on a real system with real impact.
 

The Role

We’re looking for a Junior C# Developer who will:

• Work on maintaining and extending parts of an existing ERP system
• Learn to understand a legacy Delphi codebase with the support of senior engineers
• Gradually participate in the migration from Delphi to C# / .NET
• Grow technical confidence while working on a long-living product

This is a long-term role with a clear growth path in skills, responsibility, and compensation.
 

What You’ll Do

• Develop new functionality for ERP products under guidance of senior engineers
• Maintain and improve existing code (Delphi and C# parts)
• Participate in the gradual migration from Delphi to .NET (C#)
• Work with MSSQL databases and business data models
• Write clear code and basic technical documentation
• Collaborate closely with a Ukrainian engineering team
   

What You Bring

• 2+ years of commercial experience with C# / .NET
• Basic understanding of OOP and software design principles
• Basic knowledge of Delphi or strong motivation to learn it
• Experience working with SQL databases (MSSQL is a plus)
• Willingness to work with legacy code and learn complex business logic
• Responsibility, curiosity, and desire to grow as an engineer
   

Nice to Have

• Experience with ERP, CRM, or other business systems
• Understanding of MVC or layered architecture
• Any experience with system modernization or refactoring
   

What You Get

• Long-Term Stability: Work on a product designed for years of development
• Strong Learning Curve: Mentorship from senior engineers and real-world system experience
• Real Product Impact: Your work affects real business operations
• Modernization Journey: Be part of the transition from legacy Delphi to modern .NET
• Growth Path: Clear technical growth and salary progression
• Ukrainian Team: комфортна комунікація українською мовою
• Meaningful Work: Build systems that actually run companies, not just demos
   

Ready to grow on a real system that matters?
If you want to develop as a C# engineer, learn how large ERP systems work, and participate in real modernization - join AlphaDevs and become part of a long-term product journey.

👉 Apply now and grow your engineering career on real-world systems.

Project Responsibilities

Design and build .NET 8 microservices — FastEndpoints, clean architecture (Domain / Application / Infrastructure / API layers) 
Implement Temporal workflow orchestration — typed workflow and activity interfaces, cross-task-queue dispatch, signal/query patterns 
Build rules evaluation integrations with GoRules ZEN engine (GoRules.Zen NuGet, Rust FFI in-process) 
Develop platform capabilities — config registry, rules API, workflow gateway, payment and policy adapters 
Implement cross-cutting concerns — Managed Identity service-to-service auth, Cerbos authorization integration, structured logging via Serilog/Anotar 
Write and maintain xUnit tests — FakeItEasy for mocking, Shouldly for assertions; integration tests against real dependencies (no mock DB) 
Collaborate with platform and domain teams on API contracts, OpenAPI specs, and shared NuGet libraries

Working hours - BST 

Must-haves

5+ years hands-on .NET (v6+) experience; .NET 8 required 
FastEndpoints 7.x — endpoint-per-feature pattern, validators, mappers 
Clean architecture — strict layer dependency rules; no business logic in API layer; no throw for business errors (Result<T,E> pattern) 
Temporal .NET SDK — ITemporalClient, IWorkflow, IActivity, task queue registration, cross-TQ dispatch 
Azure — Key Vault, Managed Identity, Blob Storage, App Insights 
Result/Maybe monad pattern — Result<TSuccess, TError> throughout Application layer 
Entity Framework Core or equivalent — migrations, value objects, aggregate roots 
Testing — xUnit, FakeItEasy, Shouldly; integration test patterns 
Podman CLI — build service image locally (podman build), run container (podman run), inspect logs, exec into container for debugging 
Read and contribute to Dockerfile (multi-stage build — SDK build stage + runtime stage) 
Run full local stack with Podman Compose (service + Temporal + DB)

Nice-to-have

GoRules ZEN engine — JDM format, ZEN expression language, decision table compilation 
Cerbos .NET client — principal/resource construction, CheckResource middleware integration 
JSONata .NET (Jsonata.Net.Native) for data transformation 
Kafka consumer patterns 
SOAP/WCF client integration

We are looking for a Senior Full-Stack Engineer with a strong backend core to join the team behind a flagship visual AI testing platform, built by a global leader in AI-powered test automation and used by engineering teams at some of the world’s largest companies.

This role involves designing, building, and operating backend services in C# / .NET for a large-scale, multi-tenant system running in the cloud, with hands-on work across Kubernetes, cloud networking, databases, and Redis. You’ll own features end to end, contribute to the frontend where needed, and collaborate daily with the client’s engineering group in Israel as an integrated member of a hybrid team.

About the product:
The team develops the company’s flagship product: a visual AI testing platform that helps engineering teams ship high-quality applications on any browser or device. Instead of relying on fragile, hand-written assertions, the platform uses Visual AI that works like a human eye: it compares new screenshots against a baseline and automatically detects meaningful visual and functional regressions, while ignoring dynamic content such as ads, dates, or transaction IDs.

What you’ll do:
- Design, build, and operate backend services in C# / .NET that power the platform at scale.
- Contribute to backend architecture: service design, data access, performance, and scalability.
- Work hands-on with cloud infrastructure, including Kubernetes, VMs, cloud networking, databases, and Redis.
- Own features end to end, from design through deployment and production, and contribute to the frontend where needed.
- Use AI-assisted development tools to speed up development, debugging, and code reviews.
- Collaborate closely with the team through design discussions, code reviews, and shared ownership of delivery.

Requirements:
- 5+ years of hands-on industry experience as a software engineer in a product environment. 
- 5+ years of experience with .NET (C#).
- 3+ years of experience building large-scale backend systems, with a solid grasp of backend architectures and design patterns.
- 1+ years of experience in a full-stack or frontend role, or with frontend technologies.
- Hands-on experience with cloud infrastructure: Kubernetes, VMs, cloud networking, databases, Redis, or similar.
- Proven experience working in hybrid or extended teams, collaborating day to day with engineers in another country.
- Hands-on experience using AI-assisted development tools in your daily workflow to accelerate development.
- Excellent written and spoken English, with clear, confident verbal communication.
- A true team player who communicates openly and takes shared ownership of results.
- Based in Warsaw and able to work from the office 3 days per week.

Nice to have:
- DevOps experience (CI/CD, infrastructure as code, monitoring).
Hands-on experience with AI-assisted development tools.

What we offer:
- A friendly environment where you can reach your full potential and grow your career.
- A long-term, full-time B2B contract with a Polish company.
- Paid vacation days, paid sick leave, and paid days off on all Polish public holidays.
- Hybrid work in Warsaw: 3 days per week in the office, the rest of the time remotely.

About the Role

We're looking for a curious and motivated Junior С# Engineer to join our team. You'll be building backend services, REST APIs, with some exposure to cloud infrastructure along the way.

We work in pairs — juniors are always paired with someone at a similar or slightly higher level, not just for code reviews, but for day-to-day coding, architecture decisions, and problem solving. This is production work: you'll ship backend services that customers rely on, with the safety net of another teammate beside you.

The client is US-based, so the team works US business hours; for engineers in Ukraine, this means your working day ends around midnight Kyiv time. This role can be full-time or part-time, depending on your availability.
 

What You'll Work On

• Backend Services & APIs — build and maintain REST APIs and backend services for client platforms.
• Azure and Cloudflare infrastructure — Azure DevOps pipelines for CI/CD
• Salesforce backend for data storage

Tech Stack

• Backend — C# (our main language), REST API.
• Cloud — Azure - nice-to-have, you'll pick up what you need on the job.

Working Hours & Format

This role can be full-time or part-time, depending on your availability. It's remote, with occasional face-to-face working sessions. Our client operates on US business hours, so the schedule needs to align with US time zones — for engineers based in Ukraine, your working day will end around midnight Kyiv time.

Requirements

Solid fundamentals in C#, and a basic understanding of REST APIs.

Exposure to Azure is a plus, but not required — you'll pick up what you need on the job. We care more about your curiosity and attitude than your CV.

Project Description:

Build software that runs real mining operations. See your work live on an open pit mine site. We are looking for a Senior Full Stack Developer or strong Backend Developer to help build and evolve a large scale software platform used in open pit mining operations.
This is not internal tooling or maintenance work. You will be building new features in a modern, distributed system where the changes you make are deployed into live mine sites and used every day by operational teams.
If you care about ownership, clean architecture, and seeing your work have real world impact, this role is worth a look.

Responsibilities:

You will join a cross functional product squad responsible for delivering new capabilities across a complex operational platform that supports fleet and equipment workflows in open pit mining.

Your work will include:
· Designing and building backend services using C# and .NET in a microservices and event driven architecture
· Building modern React applications focused on clarity, performance, and usability
· Owning features end to end from design through to production deployment
· Working closely with domain experts to turn complex operational problems into reliable software
· Contributing to architectural decisions, technical standards, and engineering best practice
· Improving reliability, observability, and performance in a mission critical system

Mandatory Skills Description:

• Strong experience with C# and .NET
• Experience designing and building microservices and event driven systems
• Solid SQL skills and experience with SQL Server
• Experience with Entity Framework or similar ORMs
• Comfortable owning APIs, service design, and data models
Frontend
• Strong experience with React
• Experience using modern component libraries such as MUI, Mantine, or shadcn
• Experience with state management libraries such as Redux, Zustand, or MobX
• A focus on building maintainable and user friendly interfaces

Nice-to-Have Skills Description:

• Docker and Kubernetes exposure
• Experience integrating with native or performance critical systems such as C++
• Previous experience in mining or industrial software
• Experience working with open pit mining systems

Languages:

English: B2 Upper Intermediate

About the Company

Digis is a European IT company, part of Fiverr (NYSE: FVRR), with 250+ specialists delivering high-load SaaS platforms, enterprise solutions, and cloud-native products worldwide. We build long-term engineering teams and ensure transparency, stability, and professional growth for every talent.

About the Project

An established international technology platform that processes large volumes of real-time data and transforms complex information into intuitive, high-performance desktop applications.
The product is actively evolving, with new features, advanced visualization capabilities, and integrations being continuously introduced. We are looking for a C# Developer who enjoys building sophisticated desktop interfaces and solving challenging UI performance problems.
This is an opportunity to take ownership of desktop UI development, influence product decisions, and work closely with the CTO and experienced engineers on a mature, actively growing product.

Responsibilities

• Develop and enhance high-performance desktop applications using C#.
• Develop and implement intuitive, responsive desktop interfaces.
• Build interactive dashboards and advanced real-time data visualizations.
• Integrate live data streams and optimize UI performance.
• Collaborate with the engineering team to develop new features and improve the user experience.

Requirements

• 3+ years of C#/.NET development experience.
• 1+ year of WPF desktop development experience.
• Hands-on experience with real-time data visualization or dynamic UI development.
• English: B2 level or higher.

What We Offer

• Work on an established international product with complex technical challenges.
• Take ownership of desktop UI development and influence product decisions.
• Gain hands-on experience with real-time data processing and advanced visualization.
• Collaborate directly with the CTO and experienced engineers.
• Fully remote work with flexible working hours.
• Long-term cooperation and professional growth.
• Competitive compensation and benefits.

We welcome applications from candidates who believe their experience and skills could bring value to our team.

We are looking for an experienced AWS Engineer / .NET Developer with strong expertise in Amazon Web Services, .NET/C# web development, and AI technologies.

Must Have

• Strong hands-on experience with AWS (Amazon Web Services)
• Solid commercial experience with C# and .NET / .NET Core
• Strong experience with ASP.NET Core
• Experience with ASP.NET MVC
• Experience developing Web APIs / REST APIs
• Experience with web applications and web services
• Good knowledge of HTML, CSS, JavaScript / TypeScript
• Experience with modern web frameworks such as React and/or Angular
• Practical experience with AI technologies and AI-powered solutions
• Experience integrating AI capabilities into software applications
• Good understanding of cloud architecture and AWS services
• Experience with Git and CI/CD

• Good problem-solving skills and ability to work independently

   

Responsibilities

• Design, develop and maintain web applications using C#/.NET and ASP.NET Core
• Develop and maintain ASP.NET MVC applications
• Build and maintain Web APIs and REST APIs
• Develop backend services and cloud-based applications
• Work with AWS to deploy, maintain and scale applications
• Develop and integrate AI-powered functionality
• Integrate AI services and APIs into existing software products
• Work with frontend technologies such as JavaScript/TypeScript, React and/or Angular
• Improve application performance, scalability and reliability
• Participate in code reviews, technical discussions and architecture decisions
• Work closely with other developers, architects and technical teams

The candidate should have hands-on commercial experience with these technologies and be able to independently work on complex software and cloud-based solutions.

UNITY-BARS - українська ІТ компанія, яка спеціалізується на розробці та впровадженні банківського програмного забезпечення та фінансових установ, у пошуках  Middle - Senior .NET Developer 

Необхідно:

• .NET, .NET Core; 
• Web API; 
• RxJS; 
• Entity Framework; 
• Angular; 
• NgRx; 
• Reactive Forms; 
• REST API; 
• EF Core; 
• DI (dependency injection); 
• SOLID principles; 
• HTML & CSS;
• JWT; 
• Досвід роботи від 2х років. 

Буде перевагою: 

• Технічна освіта (Інформаційні технології, комп’ютерні науки та ін.); 
• Досвід роботи з Kafka (на рівні принципів producer/consumer) та SignalR. 

Що будемо робити:

• Розробка інтеграційного модуля; 
• Адаптація існуючих рішень. 

Ми пропонуємо: 

• Офіційне працевлаштування;
• Змішаний графік роботи;
• Медичне страхування;
• Корпоративні курси англійської;
• Проєкти для країни та комерційного ринку, а також можливість постійного навчання та розвитку. 

Етапи підбору: співбесіди (онлайн) soft skills /hard skills / final

Solead Software is looking for an experienced .NET AI engineer to join our growing team to extend our custom software platform for information management industry with modern AI capabilities.

The primary goal is to make information management services more efficient and reduce manual work by means of introducing AI automation. The existing software platform is built on MS .NET and SQL Server technologies, using Azure services and integrations with multiple third-party systems. Multiple AI assistants and agents should be added into existing architecture via MS Agent Framework and Azure AI Foundry. The first practical tasks will be in building an AI powered PDF invoice parser and creating an AI agent for customer support via email.

Currently, Solead team consists of seven professionals split into three small subteams, and tightly collaborating with team mates in Europe and USA. Agile workflow assumes intense collaboration within the team, regular communication with project stakeholders, daily code commits and weekly releases. The entire software engineering process is based on GitLab environment with AI assistants and very high attention to code quality and documentation.

Join our amazing team and work on a large-scale project utilizing best practices and approaches in software development industry. You’ll meet great people and software professionals who will share with you valuable knowledge and expertise. You’ll be creating real software for real users, and seeing how your products help them in daily work.

This is a full-time position in Lviv, Ukraine. We combine work in our modern and spacious office with work at home.

Technology Stack

• Frontend: React, TypeScript, TanStack Query, Tailwind CSS, ASP.NET MVC, Bootstrap, jQuery, WPF, XAML
• Backend: .NET 10, C# 14, ASP.NET Core Web API, REST, Entity Framework Core, RabbitMQ, JWT Bearer Authentication, SQL Server, Microservices, Docker, Azure Cloud
• Tools: Consul, Swagger, GitLab, CI/CD, Visual Studio, Teams, MS Copilot / GitLab Duo

• AI: MS Agent Framework, Azure AI Foundry, LLM, RAG, MCP

   

Duties and Responsibilities

• Design, implementation and maintenance of various AI automation capabilities for the existing .NET based custom software platform
• Following well-established development process and practices, such as code review and documenting, code testing and merging, etc.
• Participation in Agile/Scrum workflow, iteration planning, team meetings, technical brainstorming, peer reviews, etc.
• Regular communication to other team members and project stakeholders, work progress and status reporting

• Proactive suggestions on how to improve the product, optimize workflow and enhance usability

   

Skills and Qualifications

• B.Sc. or M.Sc. degree in computer science, applied math, or similar
• 7+ years of experience in building commercial software systems
• Strong expertise in modern AI models, techniques, frameworks and engineering practices to build AI solutions and automate business workflows
• Good understanding of different LLMs, RAG and MCP technologies
• Experience in creating AI agents and assistants using MS Agent Framework and Azure AI Foundry
• .NET (Framework/Core) and C# programming skills
• Solid expertise in modern cloud technologies and software integration methods
• Git/GitLab and CI/CD working experience
• Agile/Scrum approach knowledge and practice
• High attention to details, accuracy, analytical and troubleshooting skills
• Smartness, agility and ability for quick ramp-up
• Upper-intermediate or better English communication skills (B2+)

.NET Full-Stack Engineer -  Microsoft Teams Bots & Communications
 

We’re looking for an experienced .NET Full-Stack Engineer to join a long-term product team working within the Microsoft Teams ecosystem.
 

The role is primarily backend-focused and combines Microsoft Teams bots, Microsoft Graph integrations, real-time activity processing, notifications, and communication-related functionality.
 

You’ll work on production features inside Microsoft Teams, including bot interactions, activity feeds, communication events, and integration with Microsoft 365 services.
 

What you’ll work on

• Design, develop, and maintain Microsoft Teams bots that process user and system activity in real time.
• Build and improve a real-time activity feed bot that sends timely notifications to users’ Teams activity feed through Microsoft Graph.
• Develop integrations with Microsoft Graph API, Microsoft Teams APIs, and Microsoft 365 services.
• Work with Teams-related functionality such as calls, meetings, participants, recordings, call records, notifications, and communication data.
• Build backend services for collecting, processing, and exposing Teams activity and communication data.
• Implement real-time functionality using SignalR / WebSockets where applicable.
• Set up and manage bot authentication and permissions with Microsoft Entra ID (Azure AD).
• Contribute to frontend functionality using React / Angular / TypeScript when needed.
• Troubleshoot application-level integration issues and improve reliability and performance.
   

Core stack

• C# / .NET / ASP.NET Core
• Microsoft Graph API
• Microsoft Teams APIs
• Microsoft Graph Communications / Cloud Communications APIs
• Microsoft Bot Framework / Teams bots
• Microsoft Entra ID
• SignalR / WebSockets
• SQL
• REST APIs
• React / Angular / TypeScript
   

Requirements

• 5+ years of commercial experience with C# / .NET
• Strong backend experience with ASP.NET Core
• Commercial experience with Microsoft Graph API
• Hands-on experience with Microsoft Teams integrations
• Experience developing or supporting Teams bots
• Understanding of Teams activity feed notifications, Graph permissions, authentication, and event-driven integrations
• Experience with Microsoft Entra ID / Azure AD authentication and permissions
• Experience with SQL and REST APIs
• Ability to independently deliver integrations and troubleshoot production issues
• English B2+
   

Strong advantage

• Microsoft Graph Communications / Cloud Communications APIs
• Teams calls / online meetings / call records / recordings / participants
• Real-time audio/media
• VoIP / telephony
• WebRTC
• SIP / RTP
• Direct Routing
• Azure Communication Services
• High-load or distributed systems
   

About the project

This is a long-term product, not a short-term integration project. You’ll join a stable development team with an ongoing roadmap and deep involvement in the Microsoft Teams ecosystem.

The role combines backend engineering, cloud infrastructure, Microsoft Graph integrations, Teams bot development, and real-time communication functionality.
 

What we offer

• Long-term cooperation
• Full-time engagement
• Stable US-based client
• Predictable workload
• Paid vacation and sick leave
• Professional development support
• Equipment provided
• Office lunches
• Anniversary and baby bonuses

Creatio is an AI CRM and workflow platform where people and AI agents work together - with no limits on users, agents, or scale. We help midsize and large organizations run customer workflows in the AI era. With a global team and a large ecosystem of partners, Creatio serves thousands of customers in over 100 countries and automates tens of millions of workflows daily. Genuine care for our clients and partners is at the heart of our DNA.

We’re proud to be recognized by top industry analysts as a Leader and Strong Performer in multiple Gartner and Forrester reports.

In 2025, Creatio was named to Inc.’s Best Workplaces list, recognizing our commitment to employee wellbeing and a strong workplace culture.

Who We’re Looking For

We are looking for an AI Software Engineer to design, build, evaluate, and operate AI-powered capabilities within the Creatio platform.

You will join the AI teams building the agent platform that enables AI agents to safely perform real work in the product: call tools and APIs, read and write data, maintain context, follow permissions, and escalate to humans when needed.

The team also owns the core infrastructure for testing, monitoring, logging, observability, and cost/performance control, ensuring AI agents are reliable, scalable, secure, and production-ready.

This role combines strong software engineering expertise with hands-on AI engineering experience. You will work on enterprise-grade AI solutions, including assistants, copilots, knowledge systems, semantic search, RAG-based capabilities, and agentic workflows.

Responsibilities:

• Design and implement AI-powered product features within the Creatio platform.
• Build assistants, copilots, agentic workflows, knowledge systems, RAG, and semantic search capabilities.
• Integrate LLM providers, tools, enterprise data sources, and MCP-based solutions.
• Develop and maintain backend services using C# and .NET.
• Build evaluation frameworks, quality gates, and observability practices for AI solutions.
• Monitor and improve the quality, latency, cost, reliability, and security of AI capabilities.
• Apply AI coding assistants and engineering agents as part of the daily development workflow.

Requirements:

• Strong experience with C# and .NET.
• Hands-on experience with LLMs, prompt engineering, function calling, and structured outputs.
• Understanding of agent architectures, MCP, RAG, embeddings, vector search, and semantic search.
• Experience with AI evaluation, observability, security, and Responsible AI practices.
• Solid understanding of API design, distributed systems, and software architecture.
• Experience with SQL databases, testing, CI/CD, and cloud-native development.
• DevOps fundamentals, including Docker containerization and basic Kubernetes knowledge.
• Strong knowledge of engineering best practices and production-grade software development.

What to expect from us:

• Growth & Development: Clear career paths, mentorship opportunities, and access to continuous learning to help you reach your full potential.
• Flexibility & Well-Being: We provide flexible work arrangements and initiatives that empower you to manage your schedule effectively, stay productive, and thrive both personally and professionally.
• Recognition & Impact: A culture that celebrates achievements, values your ideas, and empowers you to make real contributions from day one.
• Innovative Culture: Be part of a company that embraces new ideas, modern technologies, and bold thinking to stay ahead of the curve.
• Benefits & Rewards Package: We provide competitive compensation and benefits designed to support you and your family. Our rewards approach goes beyond salary, recognizing your contributions and commitment. The exact package may vary depending on your country of residence and employment type.

We are looking for a  Senior/Str Middle .Net developer to join a product engineering team and work on the modernization and scalability of a large-scale backend platform.

You’ll be working with distributed systems, event-driven architecture, microservices, and real-time data processing, helping migrate legacy components to modern, cloud-ready services.

What you’ll do

• Develop and maintain containerized .NET Core microservices.
• Build event-driven communication and streaming flows using Kafka, RabbitMQ, and MassTransit.
• Design scalable solutions together with product and engineering teams.
• Drive migration from legacy .NET Framework and MSMQ components to modern services.
• Work with both relational and NoSQL databases.
• Participate in architecture and design reviews.
• Apply Domain-Driven Design and clean code principles.
• Improve system reliability, scalability, and performance.

• Mentor less experienced engineers and contribute to engineering best practices.

   

What we’re looking for

• 5 - 8+ years of backend development experience.
• Strong commercial experience with C# and .NET Core/.NET Framework.
• Kafka and RabbitMQ — mandatory.
• Solid understanding of microservices, distributed systems, and event-driven architecture.
• Experience with MSSQL, PostgreSQL, MongoDB, and Redis.
• Experience designing and working with APIs.
• Understanding of security practices such as OAuth2, JWT, and secrets management.
• Strong debugging, profiling, and performance optimization skills.
• Experience with testing, clean code, and continuous improvement.
• Strong communication skills and a proactive approach.

• Ability and willingness to mentor other developers.

   

Nice to have

• AWS — ECS/EKS, Lambda, RDS, S3, CloudWatch.
• MassTransit or similar orchestration libraries.
• Experience with infrastructure and cloud-native systems.
• MSMQ and legacy system migration experience.
• CI/CD, Docker, and Infrastructure as Code.
• JavaScript/React for cross-layer collaboration.