Jobs C# / .NET

We’re building a next‑generation financial leasing ecosystem on Creatio — not just a CRM, but a unified platform that connects business processes, customer experience, and modern digital channels. To accelerate our growth, we’re looking for a Creatio Team Lead who will drive technical excellence and help scale the product.

💡 About the Project

Our core solution is a Creatio‑based platform that automates the full financial leasing lifecycle — from application to contract servicing. And we’re expanding fast:

📱 Mobile app (Flutter) 🌐 Web portal (Angular) 🔗 Integrations with external services via API

👥 The Team

You’ll join a strong cross‑functional team of 14 specialists:

• Backend & frontend developers
• Business analysts
• QA engineers
• DevOps

The team is established and motivated — now it needs a strong technical leader.

🎯 What You’ll Do

• Lead development on Creatio
• Design and evolve the system architecture
• Mentor and grow the engineering team
• Collaborate closely with business stakeholders and analysts

• Build the foundation for future mobile and web solutions

   

🛠️ What We’re Looking For

• 1+ year of experience as a Team Lead
• 3+ years of hands‑on experience with Creatio
• Strong knowledge of:
  • C#, .NET
  • JavaScript, ExtJS
  • REST API
  • SQL (MS SQL Server)
• Understanding of:
  • HTTP, XML/JSON
  • SDLC (Agile / Scrum)

• Experience with CI/CD (e.g., Jenkins) and Git

   

⭐ Why This Role Is Exciting

• You influence the product from the ground up
• A diverse tech landscape: CRM + mobile + web
• A team you can shape and develop

• Freedom to make architectural and technical decisions

   

🌟 Why 7,000 Employees Have Chosen Us

• Growth every day: structured career development, internal training programs, and opportunities to gain new skills.
• A supportive, inspiring team: a professional environment where your ideas matter and collaboration is the norm.
• Flexibility that works for you: hybrid format, flexible schedule, and the ability to balance productivity with comfort.
• Wellbeing matters: table tennis, psychological support, and legal assistance to help you stay balanced.
• Meaningful impact: participation in social initiatives that make a real difference and add purpose to your work.
• A culture of trust: mistakes are treated as learning opportunities, and achievements are celebrated together.
• Modern tools & technologies: everything you need to work efficiently and enjoy the process.

We are looking for a Senior .NET FullStack Engineer with React (Azure) to join our team!

Our client is a precision mental health company on a mission to make high-quality, evidence-based digital mental health support accessible at scale. Their platform transforms deep clinical expertise into trusted, personalized, and measurable digital experiences that help people improve their mental well-being. Working with digital health partner companies across the US, they combine AI, rigorous clinical science, and human-centered design to deliver meaningful real-world outcomes.

Project technical stack:

• Backend: .NET/C#, REST APIs, Auth0, third-party integrations 
• Frontend: TypeScript, React, react-query, react-hook-form, tailwind, lottie (animation), jest, testing-libraty/react
• Cloud: Azure
• Data & Storage: Azure SQL, Cosmos DB, Blob Storage, Azure Storage 
• DevOps, Infrastructure & CI/CD: GitHub, Azure Pipelines, Docker, Kubernetes, Terraform, Grafana

Responsibilities:

• Design, develop, test, document, and maintain solutions across backend and frontend
• Deliver new features end-to-end with strong ownership and accountability, while maintaining and improving existing solutions
• Build secure, scalable, reliable, high-quality, and high-performance applications
• Work effectively in a cross-functional team, collaborating closely with Product, QA, DevOps, Data, AI, and Engineering stakeholders
• Communicate confidently in a multinational environment with business, engineering, marketing, and clinical stakeholders when needed
• Actively apply AI-assisted approaches across solution design, coding, testing, debugging, and delivery workflows
• Participate fully in Agile/Scrum ceremonies
• Troubleshoot complex issues, perform root-cause analysis, and investigate new tools and approaches
• Contribute to technical decisions, architecture discussions, and engineering best practices

Requirements:

• 5+ years of professional software engineering experience
• Strong commercial experience with .NET/C#
• Strong commercial experience with React/TypeScript
• Proven full-stack delivery experience across frontend and backend systems
• Strong experience building and consuming REST APIs
• Solid production experience with Microsoft Azure
• Solid understanding of SOLID principles, design patterns, and microservices architecture
• Strong understanding of version control, security best practices, and Agile methodologies
• Strong Agile delivery experience with a focus on speed and quality
• Startup mindset: adaptable, fast-moving, pragmatic
• Result-oriented mindset with ownership mentality
• Excellent communication and collaboration skills, able to lead conversations and drive alignment
• Able to work independently and as part of a team
• Proactive, responsive, and dependable with a strong ownership mindset

Nice to have

• Experience in healthcare, mental health, or other regulated industries
• Experience building AI-powered product features
• Practical experience using Anthropic Claude Code to improve SDLC
• Testing and test automation experience
• Python experience
• Data engineering experience
• Strong DevOps & CI/CD practices

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

Developing a software platform for the automated analysis and visualization of cyberattacks in safety-critical systems. The goal is to efficiently support companies in regulated industries – from automotive and energy to the security and defence sector – in implementing complex cybersecurity requirements, the deal is to distributed a micro-service based application for real-time system design and threat modelling.
Based on best practices of Domain Driven Design.

Technology:
- C# / .Net Core;
- Rest Api / Json;
- NuGet / Packages;
- Ado.Net / EntityFramework / Dapper; 
- Sql (relational design understanding);
- Windows / Linux;
- Message broking;
 

Would be a plus:
- Html / Css / JS;
- Sass / Less;
- Anguler | React | VueJs (some of);
 

Architecture:

- Multi- (micro-/macro-) services;
- System complexity management;
- Testing approaches understanding;
- CI/CD concepts understanding; 
- Clean coding / Refactoring;
- Ability to keep architecture consistency;
- DDD, SOLID, KISS

General .net:

- Keep development process clean and transparent for project management and rest of the team;
- Integrate FE development process with existing project parts;
- Be aware in full-stack scope of product development;

General BA:

- Solid understanding of software architecture concepts (layers, microservices, APIs, data models, integration patterns);
- Experience translating business requirements into technical constraints and design principle;
- Strong analytical, communication, and documentation skills;

Tools:
- Git;
- Postman / Fiddler (or any other utility); 
- Docker;
Other:
- English - upper intermediate (C1 equivalence);

Responsibilities:

• Develop, optimize, and maintain applications using C# /.NET.
• Work with the existing architecture and participate in developing new modules and features.
• Integrate with external services, APIs, and hardware devices (IoT).
• Collaborate with the team, including embedded developers, QA engineers, and technical specialists.
• Participate in task planning, estimation, and internal process improvements.
• Write clean, maintainable, and scalable code.
• Analyze, debug, and fix issues, perform performance profiling and optimization.

Requirements:

• 3–4+ years of commercial experience with C# /.NET (5+ years will be a strong advantage for Middle/Senior level).
• Strong knowledge of .NET Framework / .NET Core.
• Experience with Blazor (UI).
• Experience working with MS SQL, MySQL, or other relational databases.
• Understanding of OOP, SOLID principles, multithreading, and REST API.

• Experience working with hardware, communication protocols, or device integration will be a strong advantage.

   

Nice to Have:

• Experience with RabbitMQ or Kafka and microservices architecture.
• Experience with Docker and/or Kubernetes.
• Understanding of embedded systems or IoT device integration.
• Experience building CI/CD pipelines.

What We Offer:

• Opportunities for professional growth and career development.
• Official employment and military reservation (if applicable).
• Regular salary reviews.
• Opportunity to influence product development and technical decisions.
• Comfortable office workspace in Lutsk (work on-site).
• Flexible approach to working hours.
• Free English lessons at the office (twice a week).

Ідеально для тих, хто прагне:

• Проектувати, створювати та обслуговувати сервіси за допомогою .NET (C#);
• Розробляти та розвивати мікросервіси у production середовищі;
• Підтримувати існуючу функціональність та забезпечувати зворотню сумісність релізів;
• Працювати над основними частинами домену, такими як облікові записи, реєстрація, аутентифікація, гаманець та пов'язані з ними бізнес-можливості;
• Брати участь в аналізі завдань, декомпозиції та оцінці estimation;
• Надавати виконані завдання для тестування та співпрацювати з контролем якості під час фаз тестування;
• Створювати інтеграції за допомогою асинхронного зв'язку та шаблонів, керованих подіями;
• Працювати з реляційними базами даних, транзакційними потоками та оптимізацією продуктивності запитів;
• Виявляти вузькі місця у продуктивності та вносити покращення проектування системи;
• Брати участь у спостереженнях за сервісами (журнали, метрики, трасування, інформаційні панелі, моніторинг);
• Керувати конфігураціями розгортання та маніфестами в середовищах Kubernetes;
• Працювати в налаштуванні GitOps та брати участь у розгортанні та операційній власності;
• Співпрацювати з командами DevOps щодо змін, пов'язаних з інфраструктурою (включаючи робочі процеси Terraform);
• Приймати участь у ротації чергувань та обробки production інцидентів;
• Опрацьовувати технічний борг та пропонування покращень;
• Виконувати high-quality code reviews з акцентом на зручність обслуговування, продуктивність та узгодженість.

Досвід, який стане твоєю перевагою:

• 5+ років досвіду комерційної розробки backend-проектів з C# / .NET (6+), .NET Core / ASP.NET Core;
• Глибоке розуміння архітектури мікросервісів та розподілених систем;
• Досвід роботи з асинхронним зв'язком та event-driven архітектурою;
• Досвід роботи з брокерами повідомлень (Kafka або аналогічні);
• Глибокі знання реляційних баз даних (SQL, транзакції, індексація, налаштування продуктивності), PostgreSQL буде перевагою;
• Досвід роботи з інструментами ORM (наприклад, Entity Framework);
• Досвід написання модульних та інтеграційних тестів;
• Розуміння аутентифікації та авторизації (OAuth 2.0, OpenID Connect);
• Гарне розуміння принципів проектування програмного забезпечення (SOLID, розділення проблем, тестованість);
• Розуміння observability та моніторингу у production системах;
• Досвід усунення несправностей з продуктивністю та пам'яттю;
• Англійська - Upper Intermediate;
• Досвід роботи з Orleans, Redis буде перевагою;
• Досвід роботи з AWS, Kubernetes, Terraform буде перевагою;
• Досвід роботи з Grafana, Loki, Tempo буде перевагою.

Ми цінуємо:

• Хороші комунікативні навички;
• Багатозадачність, швидке виконання завдань;
• Вміння працювати в команді;
• Відповідальність.

Наші клієнти пропонують конкурентні переваги для підтримки вашого професійного та особистого зростання, зокрема:

• Орієнтація на здоров’я та добробут;
• Глобальне медичне страхування;
• Можливості для зростання;
• Програми бенефітів (компенсація спорту / стоматології / психолога тощо);
• Бонуси за досягнення результатів;
• Динамічне робоче середовище.

English version:

Perfect for those who aim to:

• Design, build, and maintain backend services using .NET (C#);
• Develop and evolve microservices in a production environment;
• Support existing functionality and ensure backward compatibility of releases;
• Work on core domain flows such as accounts, registration, authentication, wallet, and related business capabilities;
• Participate in task analysis, decomposition, and effort estimation;
• Deliver completed tasks for testing and collaborate with QA during test phases;
• Build integrations using asynchronous communication and event-driven patterns;
• Work with relational databases, transactional flows, and optimize query performance;
• Identify performance bottlenecks and contribute to system design improvements;
• Contribute to service observability (logs, metrics, traces, dashboards, monitoring);
• Manage deployment configurations and manifests in Kubernetes environments;
• Work in a GitOps setup and participate in deployment and operational ownership;
• Collaborate with DevOps teams on infrastructure-related changes (including Terraform workflows);
• Participate in on-call rotation and handle production incidents;
• Identify technical debt and propose improvements;
• Perform high-quality code reviews focusing on maintainability, performance, and consistency.

Experience you’ll need to bring:

• 5+ years of commercial backend development experience with C# / .NET (6+), .NET Core / ASP.NET Core;
• Solid understanding of microservices architecture and distributed systems;
• Experience with asynchronous communication and event-driven architectures;
• Experience with message brokers (Kafka or similar);
• Strong knowledge of relational databases (SQL, transactions, indexing, performance tuning), PostgreSQL will be a plus;
• Experience with ORM tools (e.g., Entity Framework);
• Experience writing Unit and Integration tests; 
• Understanding of authentication and authorization (OAuth 2.0, OpenID Connect);
• Good understanding of software design principles (SOLID, separation of concerns, testability);
• Understanding of observability and monitoring in production systems;
• Experience troubleshooting performance and memory issues;
• English - Upper Intermediate;
• Experience with Orleans, Redis will be a plus;
• Experience with AWS, Kubernetes, Terraform will be a plus;
• Experience with Grafana, Loki, Tempo will be a plus.

It's a perfect match if you have those personal features:

• Good communication skills;
• Multitasking, quick task execution;
• Good team player;
• Responsibility.

Our clients offer competitive benefits to support your professional and personal growth, including: 

• Health & Wellness Focus;
• Global Medical Coverage;
• Growth Opportunities;
• Benefits Programs (compensation for the gym/stomatology/psychological service & etc.);
• Performance-Driven Rewards;
• Dynamic Work Environment.