Jobs Lviv, C# / .NET

We are looking for an experienced Lead/Senior .NET Engineer to join a long-term modernization initiative focused on transforming a large-scale enterprise platform from .NET Framework 4.8 to .NET 10. This is a hands-on engineering role where you'll work on modernizing backend architecture, migrating legacy components, improving code quality, and preparing the platform for cloud-native deployment on AWS. You'll collaborate with experienced engineers in an Agile environment while helping shape the future architecture of a mission-critical system.

Responsibilities: 

• Drive the migration of a large enterprise application from .NET Framework 4.8 to .NET 10.
• Modernize backend services and replace legacy Windows-specific dependencies with cross-platform solutions.
• Migrate a large Entity Framework 6 data model to EF Core 8, one bounded context at a time.
• Refactor legacy code following modern architecture principles and best engineering practices.
• Improve automated testing by introducing unit test coverage and quality gates.
• Collaborate with DevOps engineers on containerization, Docker configuration, and AWS deployment.
• Participate in architecture discussions, code reviews, technical planning, and Agile ceremonies.

Requirements:

• 5+ years of commercial experience with C#/.NET backend development.
• Strong expertise with ASP.NET, ASP.NET Core, and modern .NET.
• Proven commercial experience migrating applications from .NET Framework to .NET Core / .NET 8+.
• Strong experience with Entity Framework Core.
• Good understanding of DDD, CQRS, and layered architecture.
• Experience building containerized applications using Docker.
• Solid knowledge of xUnit, Moq, and automated testing practices.
• Experience deploying .NET applications to AWS ECS/Fargate and working with ECR.
• Experience with RabbitMQ, MassTransit, or similar messaging technologies.
• Experience with Hangfire or other background job processing frameworks.
• Strong Git workflow and experience working in Agile teams.

Nice to have:

• Experience designing and maintaining CI/CD pipelines.
• Familiarity with Angular applications or micro-frontend architecture.
• Experience implementing automated code coverage in CI.
• Knowledge of performance optimization and scalable distributed systems.

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

We’re working on a product that powers real conversations — an intelligent call center platform built to handle serious communication volumes. Think smart call routing, live dashboards, VoIP, and deep CRM integrations. The system is already running, already growing, and needs an engineer who wants to help shape where it goes next.

📍 Lviv / Remote · Full-time · 1+ years · English Upper-Intermediate

Stack

.NET 6+ / C# · React.js · TypeScript · MS SQL Twilio · WebRTC · SignalR · Azure (optional)

What You’ll Do

→ Build and maintain features across the full stack

→ Integrate telephony and CRM systems via APIs

→ Work on performance and scalability

→ Take part in code reviews, estimations, and tech discussions

What We’re Looking For

→ 2+ years with .NET (C#) and React.js in commercial projects

→ Good understanding of web architecture and client-server communication

→ Experience with REST APIs, relational databases, Git

→ English B2

What’s in It for You

✦ Stable long-term project

✦ Mentorship and regular growth conversations

✦ Remote or hybrid

✦ 18 vacation + 5 sick + 10 extra days off per year

✦ Accounting support, office lunches, team events

✦ Work Anniversaries -Special gifts to celebrate milestones.

What’s In It for You?

• Career Growth – Opportunities to develop and advance.
• Performance Reviews – Regular feedback and support.
• Work Anniversaries – Special gifts to celebrate milestones.
• Flexible Work – Hybrid or remote (Lviv office available).
• Mentorship – Guidance from experienced professionals.
• Accounting Support – We handle the paperwork.
• Paid Time Off – 18 vacation days + 5 sick days per year.
• Extra Leave – 10 additional days off annually.
• Free Office Lunches – Enjoy meals on us.
• Team Events – Gatherings, gifts, and a welcoming atmosphere.

We're looking for a Full Stack .NET Engineer who is eager to grow, learn from experienced engineers, and contribute to a continuously evolving product.

You'll join a team building a long-term product, where your ideas matter, your code goes to production, and your growth is a priority.

What we're looking for

✔ Strong foundation in .NET / C# backend development

✔ Experience with React 

✔ Familiarity with Microsoft Azure

✔ Understanding of REST APIs, databases, and modern web application architecture

✔ Curiosity, ownership mindset, and willingness to learn

✔ Good communication skills and a collaborative attitude

What you'll do

• Develop and enhance backend services using .NET
• Build and improve frontend features with React 
• Work closely with experienced engineers and learn best development practices
• Participate in code reviews and technical discussions

• Contribute to a product used by real customers

   

Why join us?

🚀 Long-term product project

👨‍💻 Work alongside experienced team members who are happy to share knowledge

🎯 Make a real impact on product quality and development

💰 Transparent compensation

🌴 Paid vacation and sick leave

📚 Learning and professional development support

💻 High-quality equipment

🎉 Anniversary gifts

👶 Baby bonus

🍽️ Paid lunches in the office

Important

📍 This is a fully on-site position in Lviv.

Unfortunately, we are not considering candidates from other cities or remote applicants.

We are looking for C# developer for our music software

( work in Lviv or Kyiv,

remote work possibility ):

www.MusConv.com

About the project:

MusConv is b2c music software which helps people synchronize their music between music services: Spotify, Apple Music, YouTube Music, Amazon Music, Tidal and others.

We offer:

Challenging interesting project

Professional growth and development program

Flexible schedule

Team of highly talented individuals

Access to developer courses like https://www.pluralsight.com

Mentor: code reviews, studying( fiddler, postman, asynchronous programming, etc.)

5% of sources is simple gui based on xaml( avalonia similar to wpf )

95% of sources is regular .net standard( backend to interact with different music services )

We are looking for C# developer to implement new features

We're looking for a Junior Full Stack .NET Engineer who is motivated to grow, enjoys solving real-world problems, and wants to build high-quality software alongside an experienced team.

You'll work on a long-term product where you'll have the opportunity to develop your technical skills, contribute to meaningful features, and learn from senior engineers.

Requirements

• Solid knowledge of C# / .NET
• Experience with React or Angular
• Basic understanding of Microsoft Azure
• Familiarity with REST APIs, databases, and modern web application architecture
• Eagerness to learn and continuously improve

• Strong communication and teamwork skills

   

Responsibilities

• Develop and maintain backend services using .NET
• Build and improve frontend functionality with React or Angular
• Collaborate with the development team on new features and product improvements
• Participate in code reviews and technical discussions

• Write clean, maintainable, and reliable code

   

What we offer

• Long-term product development
• Mentorship and knowledge sharing from experienced engineers
• Opportunities for professional growth
• Transparent compensation
• Paid vacation and sick leave
• Learning and development support
• High-quality equipment
• Anniversary gifts
• Baby bonus

• Paid office lunches

   

Location

📍 Lviv, Ukraine

Please note that this is a fully office-based position. At the moment, we're considering candidates who are able to work on-site in Lviv.

Bits Orchestra is looking for Trainee / Junior .NET Developers for upcoming projects.

We are looking for motivated web developers with a solid foundation in .NET and UI development, who are eager to grow and gain hands-on experience with modern CMS-based solutions, including Kentico CMS.

Bits Orchestra is a software outsourcing company specializing in custom web solutions and CMS platforms. Our team consists of around 50 professionals and is currently in an active growth phase, with a strong focus on building mature engineering processes and scaling operations.

Interested? 🌟 Read on!

Requirements:

— Software development on a .NET and SQL Server 2022 platform. Development includes implementing system improvements/enhancements and resolving system defects.
— Сonfident knowledge of .NET 8.0, MVC, ASP.NET, Entity Framework, C#, T-SQL, HTML, and CSS
— Familiarity with Visual Studio 2022/Rider, Windows 10/11, Microsoft SQL Server 2022, and IIS 10
— Knowledge of JavaScript, REACT, Angular, and .NET Framework 4.8 will be beneficial
— At least Upper-Intermediate level of spoken and written English 💡

!! Please note: first of all we are considering candidates from Lviv and the region !!

What you’ll be working on:

As a trainee / junior developer, you will be responsible for the design, development, and testing of application solutions within an object-oriented environment.

— Under close supervision, develops, codes, tests, and debugs existing functionality and enhancements in .NET web applications.
— Stays current with cutting-edge technologies to improve and modernize existing applications’ functionality, performance, and UI.
— Possesses a good understanding of business applications.
— Works with the team to understand and resolve software problems, resolves customer complaints with software, and responds to suggestions for software modifications or enhancements.
— Follow the software development life cycle for each development task following the Agile Scrum methodology by brainstorming the technical approach, developing code, and unit testing according to the development schedule and team processes.

Why work with us?

You will have the opportunity to grow together with a company that is actively scaling and to work on long-term projects for international clients.

What can we offer you:
Competitive salary (discussed individually).
Option for a salary review after 12 months.
Comfortable working environment with uninterrupted power supply and Starlink.
Ability to work from home (remote-first approach).
Flexible working hours and vacation planning.
18 paid vacation days.
15 paid sick leave days (75% of fixed salary).50/50 compensation for English courses or additional professional courses.
IT Cluster membership.
Accounting support.
All necessary working equipment (laptop, monitor, headphones, etc.).

Recruitment Process:
1) Test Task ( deadline 3 working days )
2) CV Screening — we’ll review your resume to match key technical and project experience.
3) HR Interview (45m) — a short conversation to learn more about your goals, expectations, and availability.
4) Tech Interview (60min) — a technical discussion with our specialist where we’ll dive deeper into your experience, approach to problem-solving, and knowledge relevant to the role.

To apply for this position, please:

Submit your resume (CV) via the link below.
We will be happy to provide additional information and support you at every stage of the process.
We look forward to receiving your application!

🚀 This opportunity could be the next step in your professional growth — give us a chance to get to know you!

Client

The company is one of the regional leaders in the industry and is currently launching their new product, an international platform for ticket sales. The company's annual income exceeds 100 million euros.

The client uses various tools to reach their customers, such as a mobile app, a responsive web application, or communicating with them directly through the call center. The system is very complex, it must comply with a large number of regulations. We provide APIs for different clients including the biggest Global Distribution Systems (GDSes).

Our client is committed to ensuring that the system will be as modern as possible. It is based on microservice architecture with the use of continuous integration, where a few hundred components operate independently of each other and can be used as they become available. This increases the modularity of the system and optimizes the use of the services. All components run on AWS.

Team

Several independent teams are working on the project. The goals of each team are limited to the part of the system they're working on. DataArt's specialists are working on the back-end in one of the teams.

Position overview

DataArt is currently helping to modernize and develop the IT system of an independent online retailer of railroad tickets.

Technology stack

.NET (always working with newest versions)
microservices
REST API
MSSQL migrating to Postgres, DynamoDB

Responsibilities

• Refactoring and expanding tickets selling system
• Develop, enhance, and maintain high-quality, scalable code
• Work collaboratively with cross-functional teams to support the implementation of new features and achieve their objectives

Bliscore в пошуках Junior/Strong Junior .NET Developer, який приєднається до команди розробки платформи для контакт-центрів. Наш продукт допомагає автоматизувати телефонну комунікацію, забезпечує інтеграцію з CRM-системами та підтримує високе навантаження завдяки сучасним технологіям. Якщо тобі цікаво працювати над реальним комерційним продуктом, розвиватися разом із командою та впливати на розвиток функціоналу - будемо раді знайомству.

Чим ти будеш займатися:

• Розробляти новий функціонал та підтримувати існуючі модулі платформи.
• Брати участь у створенні та вдосконаленні REST API.
• Працювати з MS SQL та оптимізовувати запити до бази даних.
• Інтегрувати платформу зі сторонніми сервісами та CRM-системами.
• Співпрацювати з командою під час code review, планування та технічних обговорень.

Необхідні навички:

• Комерційний досвід розробки на C#/.NET.
• Практичний досвід роботи з ASP.NET Core та Web API.
• Базові знання React.js або бажання розвиватися у Full Stack напрямку.
• Розуміння принципів роботи REST API, Git та реляційних баз даних.
• Англійська мова на рівні Upper-Intermediate (B2).

Буде плюсом:

• Досвід роботи з TypeScript.
• Знання SignalR, WebRTC або Twilio.
• Досвід роботи з Azure.
• Розуміння принципів побудови масштабованих вебзастосунків.

Що ми пропонуємо: 

• Роботу над сучасним продуктом із реальними користувачами.
• Професійний розвиток, менторство та підтримку команди.
• Регулярний перегляд результатів роботи та можливості кар'єрного зростання.
• Гібридний формат (офіс у Львові).
• 18 днів оплачуваної відпустки, 5 лікарняних та 10 додаткових вихідних на рік.
• Бухгалтерський супровід.
• Безкоштовні обіди в офісі.
• Командні заходи, подарунки та корпоративні активності.

Процес найму:

Інтерв'ю з рекрутером → Тестове завдання → Технічне інтерв'ю → Офер

Основні вимоги

• 3+ роки комерційного досвіду роботи на аналогічній посаді
• Досвід роботи і відмінне знання PostgreSQL (WAL (PostgreSQL) види реплікацій для PostgreSQL + партиціювання, оптимізація запитів, аналіз планів виконання запитів)
• Розробка структур баз даних, виконання та аналіз SQL процедур та запитів
• Ґрунтовні знання DB, CTE
• Досконале знання .Net Developer та ASP.NET Core
• Досвід роботи з Docker
• Розуміння принципів ООP, Dependency Injection
• Розуміння принципів роботи і використання RabbitMQ, Redis, Kafka, логування
• Розуміння ACID, OLAP, RDBMS, OLTP

Буде великим плюсом

• Досвід роботи з нереляційними базами (DuckDB, MоngoDB, Cassandra)
• Знання стандартів у області програмного забезпечення, обладнання та технологій, які використовуються для персоналізації платіжних карток

Основні обов’язки

• Розробка додатків та ПЗ на проєкті, опис додатків та супровід ПЗ

Дана вакансія передбачає 70% роботи з Postgre i 30% з C#.

Своїм співробітникам ми пропонуємо

• Роботу в найбільшому та інноваційному банку України
• Офіційне працевлаштування та 24+4 календарних дні відпустки
• Компенсацію лікарняних
• Медичне страхування 
• Конкурентну заробітну плату
• Бонуси, премію відповідно до політики компанії
• Корпоративне навчання
• Сучасний комфортний офіс
• Корпоративну фінансову допомогу у критичних ситуаціях
• Можливість віддаленого формату роботи

Blackthorn Vision is looking for a Middle .NET Engineer. Our client, established in 2011 and based in Colorado, is a leading player in the U.S. application management market. We’ve had a successful partnership with this client and are seeking candidates who are eager to take ownership and improve a product already trusted by over 6,000 enterprises.

Please note: we’ll primarily consider candidates based in Lviv, as the project team is located there.

Requirements:

• 3+ years of commercial experience working on the backend as a .NET developer;
• Cloud systems development experience;
• Understanding of data access technologies, including Entity Framework and MongoDB;
• Experience with both SQL and NoSQL databases;
• Experience with microservice-oriented architecture, parallel, and asynchronous programming design patterns;
• Experience with Kubernetes, Docker, and RabbitMQ;
• Proven experience with Azure technologies: Azure Entra ID, Azure Storage accounts, Azure Service Bus, Azure Container Registry;
• Knowledge of design and architectural patterns;
• Proven ability to take ownership of features and drive them to production with minimal supervision;
• Product-oriented mindset: ability to see beyond implementation details and understand user impact and business value;
• Proactive and self-driven approach to problem-solving and decision-making;
• Experience collaborating with cross-functional teams (Product, Support, etc.);
• English level: Upper-Intermediate.

Responsibilities:

• Develop and maintain high-quality software solutions using .NET 8.0.
• Take end-to-end ownership of feature delivery: from requirements clarification and architecture design to implementation, testing, and release;
• Design scalable and maintainable solutions aligned with product goals;
• Drive technical decisions and take responsibility for their outcomes;
• Participate actively in Agile processes (sprint planning, refinement, reviews, retrospectives);
• Conduct and contribute to code reviews to maintain high code quality and consistency;
• Produce clear technical documentation, including architecture diagrams and feature specifications;
• Support onboarding of internal teams (e.g., Customer Support) to newly delivered functionality;
• Identify improvement opportunities in the system and proactively suggest solutions;
• Contribute to team knowledge sharing and support less-experienced engineers as needed.

PLEASE NOTE that we are searching for candidates who are located in Lviv and are able to visit office in Lviv.
 

About us:

EveryMatrix is a leading B2B SaaS provider delivering iGaming software, content and services. We provide casino, sports betting, platform and payments, and affiliate management to 200 customers worldwide.

But that's not all! We're not just about numbers, we're about people. With a team of over 1000 passionate individuals spread across twelve countries in Europe, Asia, and the US, we're all united by our love for innovation and teamwork.

EveryMatrix is a member of the World Lottery Association (WLA) and European Lotteries Association. In September 2023 it became the first iGaming supplier to receive WLA Safer Gambling Certification. EveryMatrix is proud of its commitment to safer gambling and player protection whilst producing market leading gaming solutions.

Join us on this exciting journey as we continue to redefine the iGaming landscape, one groundbreaking solution at a time.

We are looking for a passionate and dedicated Senior .Net Developer to join our team in Lviv!

What You'll get to do:

• Hands-on development and integration of the evolving business functionality on the core part of the platform with other office locations.
• Understanding business requirements and their mapping to the given software framework.
• Discussing business requirements along with the Team Leader, Business Analysts, Project Managers, and other parties involved.
• Adhering to the Agile methodology and design principles of the project.
• Working in a test-driven, object-oriented environment.
• Participating in the design and implementation of the new architecture of the next-generation GamMatrix platform.
• Offering the QA and support team assistance whenever issues arise.
• Adhere to best practice development standards (such as continuous integration and deployment).
• Ability to understand the complex technical architecture.
• Ability to manage multiple priorities, commitments and tasks.
   

What You need to know:

• Experience with ASP.NET 4+ Frameworks and .Net Core 3.1+.
• Good understanding and experience with relational database systems (MSSQL Server, PostgreSQL) GIT, CI/CD practices.
• Strong knowledge of OOP, SOLID principles, and design patterns.
• Experience with multi-thread programming.
• Experience using containerization technologies (Docker) and orchestration technologies (Kubernetes).
• Experience implementing and using message queues (Kafka, Rabbit MQ).
• Hands-on experience writing unit tests.
• Experience with distributed caching solutions (Redis).
• Knowledge of n-tier applications, distributed applications.
• English proficiency.
   

Nice to have:

• Strong knowledge of C#.
• Experience with building and managing microservices, parallel and asynchronous programming design patterns.
• Experience building REST APIs and self-description services (ex: Swagger).
• Experience with Log Systems: Grafana, Kibana.
• Experience with modern software development life-cycle.
• Development experience with web services.
• Self-motivated and result-oriented.
• Excellent communication skills (oral and written).
• Analytical mindset.
   

Here's what we offer:

• Start with 22 days of annual leave, with 2 additional days added each year, up to 32 days by your fifth year with us.
• 3 sick leave days per year, no doctor's note required; 30 medical leave days with medical allowance
• Hybrid work schedule is available after the first three months of employment with 80/20 office/home format until the end of 2026. Starting from 2027, the policy will transition to primarily office-based work, with up to 10 work-from-home days per year with manager approval.
• Benefit from two Free Fridays each year, limited to one per quarter.
• Daily catered lunch or monthly lunch allowance. 
• Private Medical Subscription. 
• Access online learning platforms like Udemy for Business, LinkedIn Learning or O’Reilly, and a budget for external training.
• Gym allowance.
• Corporate English lessons.
• Support for New Parents:
• 21 weeks of paid maternity leave, with the flexibility to work from home full-time until your child turns 1 year old.
• 4 weeks of paternity leave, plus the flexibility to work from home full-time until your child is 13 weeks old.
   

Our office perks include on-site massages and frequent team-building activities in various locations.

At EveryMatrix, we're committed to creating a supportive and inclusive workplace where you can thrive both personally and professionally. Come join us and experience the difference!