Jobs C# / .NET

N-iX is looking for a talented Middle .NET Engineer to join our team!  

Our client is one of Europe's fastest-growing mobile companies with over 5  million active customers, 1,000 employees worldwide, and operations in five countries. The client is using the mobile virtual network operator business model.

Responsibilities:

• Back-End development of product components, adopting industry Best Practices
• Work in a cross-functional team with developers, testers, and production support. Cooperate with BI developers, business and systems analysts, and solution architects.
• Confidently communicate in a multinational environment, where communication is in English.
• Design, build, and maintain performant, efficient, reusable, and reliable code
• Translate business logic into code and automate business processes
• Perform code reviews, write unit tests
• Troubleshooting, problem-solving, and root-cause analysis to streamline project development

Requirements:

• 3+ years of commercial .NET development in a microservice environment
• Knowledge of modern .NET, 7 or 8
• Web API, ASP.NET Core, Microservices
• SQL, MS SQL, Entity Framework
• Good understanding of Docker and Kubernetes
• Strong software design fundamentals (SOLID, OOP, OOD, etc.),
• Experience with public cloud (Azure/AWS/GCP/etc.)
• Experience with Messaging or Evening (ServiceBus, RabbitMQ, EventHub, Kafka, etc.)
• REST API design, Async programming, Third-party integration.
• Being result-oriented, the ability to get things done
• Good communication skills in English, verbal and written

Would be a plus:

• Experience with microservice practices, i.e., Service mesh, Blue/Green deployments, ArgoCD, etc.
• Experience with stored procedures in MS SQL
• Experience with .NET Native AOT
• Experience with Monitoring (Azure Application Insights, Open Telemetry, etc.)
• Knowledge of functional application (Azure functions, Lambdas, etc)
• Azure Logic Apps, API Apps, AKS, Redis
• MS CRM / MS CRM Web service
• GIT / Azure DevOps

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

About the Role:

• We are modernizing legacy line-of-business applications into scalable, cloud-native platforms using .NET 10, ASP.NET Core, and Microsoft Azure.

• Legacy source systems may include ASP.NET Web Forms, MVC, WCF, WinForms, classic ASP, and older .NET Framework applications. The goal is to transform them into modern, secure, and maintainable solutions running on Azure.

• The successful candidate will work on incremental modernization initiatives using the Strangler Fig migration approach, replacing legacy modules with modern components while ensuring production stability.

Key Requirements:

• 5+ years of experience with C#, .NET Framework, and modern .NET 6/8/10 development

• Hands-on experience with legacy technologies such as ASP.NET Web Forms, ASP.NET MVC, WCF, WinForms, or classic ASP

• Strong expertise in ASP.NET Core (MVC, Razor Pages, Minimal APIs, Blazor)

• Experience with Entity Framework Core, LINQ, dependency injection, and async/await

• Solid knowledge of SQL Server / Azure SQL, T-SQL, indexing, and query optimization

• Practical experience with Azure services including App Service, Azure SQL, Blob Storage, Key Vault, Managed Identity, and Azure Functions

• Experience using AI-assisted development tools such as GitHub Copilot, Claude, or ChatGPT

• Strong understanding of software engineering best practices, testing, Git workflows, and secure coding principles

• Ability to collaborate effectively with DevOps, QA, and product teams in an agile environment

• Excellent problem-solving and communication skills

Key Responsibilities:

• Analyze existing legacy applications and design modernization strategies for migration to .NET 10

• Migrate legacy UI components to Razor Pages, Blazor, and modern ASP.NET Core patterns

• Refactor legacy data access layers to EF Core 10 with code-first migrations and repository patterns

• Replace legacy authentication systems with ASP.NET Core Identity or Microsoft Entra ID

• Develop and maintain REST APIs using modern ASP.NET Core architecture and best practices

• Implement background processing and scheduled tasks using Azure Functions and Durable Functions

• Integrate solutions with Azure services such as Azure SQL, Blob Storage, Key Vault, Application Insights, and Service Bus

• Write and maintain unit, integration, and end-to-end tests using xUnit, NUnit, Playwright, or Selenium

• Leverage AI coding assistants to accelerate migration, refactoring, documentation, and testing activities while ensuring code quality and security

• Monitor, troubleshoot, and optimize applications using Application Insights, structured logging, and KQL queries

• Work closely with DevOps and QA teams on CI/CD pipelines, deployment readiness, environment management, and test automation.

Technical Skills:

• .NET Framework, .NET 6/8/10, C# (latest language features)

• ASP.NET Core, Razor Pages, Minimal APIs, Blazor

• Entity Framework Core, LINQ, dependency injection, async/await

• HTML5, CSS3, JavaScript (ES6+), TypeScript

• React, Angular, or Blazor experience

• SQL Server, Azure SQL, stored procedures, query tuning

• Azure App Service, Azure Functions, Blob Storage, Key Vault, Managed Identity

• Application Insights, Log Analytics, KQL

• GitHub Copilot, Claude, ChatGPT, AI-assisted development workflows

• Git, pull request reviews, trunk-based or GitFlow workflows

Nice to Have:

• Experience with Web Forms to Razor Pages or Blazor migrations

• Knowledge of Strangler Fig modernization patterns

• Experience with Durable Functions and event-driven Azure services

• Containerization using Docker or Azure Container Apps

• Knowledge of OAuth 2.0, OpenID Connect, and Microsoft Entra ID

• Performance profiling and diagnostics tools

• Experience in government, procurement, or enterprise modernization projects

Soft Skills:

• Strong analytical and problem-solving mindset

• Ability to balance modernization with business continuity

• Comfortable working in hybrid legacy and modern environments

• Excellent written and verbal communication skills

• Collaborative approach with cross-functional teams

• Mentorship mindset and willingness to support junior developers

• Focus on incremental, maintainable, and low-risk delivery

We are the company bringing together developers across various technologies, and currently we are looking for strong and experienced Senior .NET Developer, who can become a part of our progressive team. We are open for opportunities to expand our team and strength it with skilled specialists. We consider Ukrainian candidates both from abroad and from Ukraine.

Requirements 
- 5+ years in .NET development 
- strong knowledge of .NET / C# (ASP.NET, .Net Core, MySQL, MongoDB, PostgreSQL, etc.), Kubernetes, Docker 
- working with microservice architecture, RESTful APIs
- expertise in Azure (understanding of AWS, GCP will be a plus)
- good English skills (from Intermediate)
- experience with CI/CD will be a plus (Azure DevOps, GitHub Actions)

What we offer 
- working with us as an agency
- remote work and flexible schedule 
- career development: take courses
- English lessons 
- paid vacation and sick-leave days

Hiring steps: intro, technical interview or test task, meeting with CTO, offer. 

If everything mentioned below is about you - we are waiting for your application.

Наш клієнт, Growe, провідна консалтингова компанія та група сервісів у сфері iGaming і розваг. Вони створюють стратегії, що працюють, та рішення, які масштабуються. Поєднуючи стратегічне бачення з практичним досвідом, Growe допомагає бізнесам орієнтуватися в динамічній індустрії, відкривати нові можливості, виходити на нові ринки та досягати сталого зростання.

Ідеально для тих, хто прагне:

• Писати чистий, читабельний код;
• Виконувати як прості, так і складні ініціативи;
• Брати відповідальність за отримані завдання;
• Координувати взаємодію між командами в межах робочих задач.

Досвід, який стане твоєю перевагою:

• 4+ роки досвіду з .NET (C#) у продакшн-системах;
• Сильний досвід роботи з ASP.NET Core Web API та проєктування RESTful API;
• Глибоке розуміння HTTP (таймаути, повторні спроби, ідемпотентність, статус-коди);
• Досвід інтеграції із зовнішніми API;
• Вміння проєктувати інтеграційні шари та модульні системи (clean architecture / onion / прагматичне шарування);
• Глибоке розуміння мікросервісів та архітектури розподілених систем;
• Досвід асинхронної взаємодії та event-driven архітектури;
• Ґрунтовні знання реляційних баз даних (SQL, транзакції, індекси, оптимізація продуктивності);
• Досвід написання unit- та integration-тестів;
• Розуміння автентифікації та авторизації (OAuth 2.0, OpenID Connect).

Ми цінуємо:

• Відповідальність за результат;
• Сильні навички міжкомандної взаємодії;
• Проактивний та відповідальний підхід до роботи;
• Мислення та комунікація на рівні senior-спеціаліста.

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.

Долучайся — і нехай твоя історія зростання розпочнеться.

English version

Our client, Growe, is a leading business advisory and services group in iGaming and Entertainment. Сreators of strategies that work and solutions that scale. Combining strategic vision with hands-on expertise, Growe helps businesses navigate the fast-evolving industry, seize new opportunities, enter new markets, and achieve sustainable growth.

Perfect for those who aim to:

• Write clean, readable code;
• Execute both trivial and non-trivial initiatives;
• Take ownership of the received initiative;
• Coordinate cross-team interactions within the framework of task work.

Experience you’ll need to bring:

• 4+ years with .NET (C#) in production systems;
• Strong experience with ASP.NET Core Web API and RESTful API design;
• Strong understanding of HTTP semantics (timeouts, retries, idempotency, status codes);
• Experience with external API integration;
• Ability to design integration layers & modular systems (clean architecture / onion / pragmatic layering);
• Deep understanding of microservices and distributed systems architecture;
• Experience with asynchronous communication and event-driven architecture;
• In-depth knowledge of relational databases (SQL, transactions, indexing, performance tuning);
• Experience writing unit and integration tests;
• Understanding of authentication and authorization (OAuth 2.0, OpenID Connect).

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

• Ownership and accountability;
• Strong cross-team collaboration skills;
• Proactive and responsible approach to work;
• Senior-level mindset in decision-making and communication.

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.

Apply, and let your growth journey begin.

We are looking for a responsible and self-motivated .NET Engineer who will join our team. This is PCI DSS complaint payment gateway which works with e-commerce platforms and general web applications. We have 100+ integrations with different payment systems and a lot of international clients.  

Required skills: 

• 1+ working experience in .NET ; 
• .NET Core ; 
• MS SQL / Postgres ; 
• OOP, OOD, Design Patterns ; 
• Vanila JS / jQuery ; 
• Algorithms & Data structures ; 
• Entity Framework Core ; 
• Git, CI/CD understanding ; 
• REST, HTTP ; 
• Asynchronous Programming ; 
• English level – Intermediate + (you will need to communicate with developers from 3rd party companies).  

Responsibilities:  

• Integration with 3rd party API’s and systems: investigate and estimate documentation of Payment Solution partner-company, make integration according to the requirements in the documentation, communicate with developers from their side if some questions occurred. 
• Deliver high-quality code; 
• Participation in an estimation process; 
• Active collaboration with team (participation in grooming, daily meetings, planning sessions etc.).

Description

For Rail client to support design and development activities in migration of Windows stand alone application to cloud service on Azure Cloud.

Short background of the stack
Backend: 95% C# with asp.net core, C# med asp.net framework and a custom extension in Java.
Frontend: C# with either Maui blazor or asp.net core + signal r + typescript
Hosting: VMs in azure or customer hosted – future will be containers on linux.
Deployment: Linux docker containers, legacy windows services, with misc oss/cots products (mssql, postgres, hivemq, traefik, keycloak)

Requirements

MUST HAVE

5+ years of experience with Microsoft Technologies: .Net, WPF, C#

RESTful API design

Linux 

gRPC

Messaging / message-brokers

Technical debt management

Network communication (connection handling, timeouts, retries, basic TCP & UDP understanding)

TLS understanding

Container technologies

Advanced mathemathics – applied math

Passionate about learning new business areas and technologies.

Ability to adapt quickly to an existing, complex environment.

Strong communication skills (both verbally and in writing) with internal team members and external business stakeholders.

Strong knowledge of software development best practices and techniques

NICE TO HAVE

SignalR
OpenTelemetry
Azure DevOps
State-driven design
Event-driven design
Store-and-forward / buffering patterns

EXPERIENCE WITH

Integrating with external systems and protocols. Forward-compatability

Working in regulated environments

Ensuring reliability in unreliable runtime environments

Meaning of idempotence and invariant

Job responsibilities

Reverse engineering of .Net / C# stand alone application and porting it to Web, cloud based apll hosted on Azure

Participate in the design and development of scalable cloud solutions.

Develop new software products – design, code, test, package and document new products.

Work closely with Scrum teams and stakeholders to successfully bring the solution to production.

Work with the project lead and project team to plan, estimate, schedule and implement development project tasks.

Report development project status in accordance with project plans.

Participate in the planning of and execution of on-site customer testing.

Business trips to Copenhagen will be required for onboarding (2 weeks) and later – once per quarter

QIT Software is looking for an ArcGIS Pro Add-In Developer — C# / .NET / ArcGIS Pro SDK. We are building a production-grade ArcGIS Pro add-in that integrates a proprietary REST API into the ArcGIS Pro desktop environment. This is a long-term engagement for the right developer.

The add-in allows professional GIS users to create, edit, and remove geospatial assets inside ArcGIS Pro while enforcing backend business logic and compliance rules through API-driven workflows. Validated changes sync automatically to an ArcGIS Enterprise schema used across the organization.

This is a desktop-first role. Not web GIS. Not ArcMap. ArcGIS Pro SDK on Windows.


Requirements:

Must-Have:
- Production ArcGIS Pro SDK experience — you have shipped at least one add-in
- Strong C# / .NET (3+ years)
- WPF + MVVM
- ArcGIS Enterprise architecture — Pro, Server, Portal integration
- REST API integration — auth, error handling, sync
- Geospatial fundamentals — geometry types, coordinate systems, feature layers, projections

Strong Plus:
- Enterprise geodatabase versioning and conflict resolution
- NetTopologySuite or similar .NET spatial libraries
- Performance optimization with large vector datasets
- UX experience for technical GIS users

Responsibilities:

- ArcGIS Pro SDK add-in development (C# / .NET) — ribbon tools, dockable panels, custom map tools
- REST API integration — authenticated retrieval, validated write-back, sync patterns
- Client-side enforcement of business rules governing asset edits before API submission
- Sync of validated changes to ArcGIS Enterprise (Server + Portal) — feature services and enterprise geodatabase
- Concurrent editing and change management across multiple GIS users
- Performance with large real-world feature datasets

Work conditions:

- The ability to work remotely from anywhere in the world;
- Flexible work schedule, no micromanagement, no strict deadlines and free overtime work;
- Work in European and American products with a modern technology stack in different industries (Finance, Technology, Health, Construction, Media, etc.);
- Revision of wages every year or on an individual basis;
- Accounting support and full payment of taxes by the company;
- 100% compensation for remote English lessons;
- 15 paid leaves (PTO) and public holidays.

We are looking for a Senior Full-stack .NET Engineer with Blazor to join our team. 

Our Client is a leading provider of automated storage and logistics systems. Together with N-iX and client engineers, you will work on developing a comprehensive, scalable, and efficient solution to meet the evolving needs of modern warehouse management, ensuring a robust, future-proof operational environment.

Responsibilities:

• Actively engaging in development meetings to stay abreast of new technologies and understand the company's vision and objectives.
• Playing a key role in technical planning meetings, collaborating with colleagues to discuss user stories and decompose tasks with the end result in mind.
• Ensuring the delivery of high-quality products through meticulous practices such as documentation, code reviews, unit tests, API tests, and comprehensive monitoring.
• Collaborating closely with the product manager to ensure the team's clear understanding of the project's purpose.
• Proactively escalating issues to the Head of Development when assistance is required.
• Aligning with the team's goals during daily stand-up meetings.
• Advocating for improvement suggestions during retrospective meetings that lead to positive changes.

Requirements:

• Strong proficiency in C#, .NET Core, and .NET Framework
• Experience with the Blazor framework
• Solid understanding of Clean Code, DDD, and CQRS principles
• Practical knowledge of CI/CD pipelines
• Experience with PostgreSQL and SQLite
• Hands-on familiarity with Docker
• Knowledge of RabbitMQ and MassTransit
• Practical experience with gRPC
• Strong skills in Unit Testing and Integration Testing
• Proficiency with Git

Sii Ukraine is a subsidiary of Sii Poland — the leader in IT, engineering, and consultancy services with over 7500 IT experts in Poland and more than 250 prestigious customers. We are looking for ambitious and top-quality professionals to join our project teams.

For an ongoing international project, we are looking for a .NET Developer to join a team responsible for the development and maintenance of a corporate website for a Swiss-based luxury brand holding.

The website is a key communication channel for investors, analysts, and financial media. It combines premium brand storytelling with regulated financial and investor-related content, requiring high standards of code quality, performance, reliability, and compliance.

The project is built on Umbraco CMS and modern web technologies and is developed by a cross-functional Scrum team.

Your tasks:

• Developing and maintaining backend functionalities for the corporate website using .NET
• Working with Umbraco CMS, including templates, content models, and integrations
• Implementing new features and enhancements in cooperation with frontend, QA, and SEO specialists
• Ensuring high performance, stability, and security of the website
• Supporting maintenance and evolution of the technical platform
• Collaborating on SEO-friendly and accessible content delivery
• Writing clean, maintainable, and well-documented code
• Using Jira for task tracking and Confluence for technical documentation
• Supporting the delivery of regulated investor-related content with a focus on accuracy and compliance 

Requirements:

• 5 years of commercial experience as a .NET Developer
• Very good knowledge of .NET / ASP.NET
• Experience with CMS-based websites (experience with Umbraco is a strong advantage)
• Good understanding of web technologies: HTML, CSS, JavaScript
• Experience working in Scrum / Agile environments
• Ability to work with existing codebases and long-term maintenance projects
• Attention to code quality, performance, and reliability
• Good communication skills and ability to work in an international team
• Good command of English (minimum B2 level)
• Tax residence in Ukraine is required*

Nice-to-have:

• Hands-on experience with Umbraco CMS
• Experience in corporate, enterprise, or brand-oriented websites
• Familiarity with SEO and accessibility considerations

Acropolium is looking for an experienced Senior Software Engineer to join our international outsourcing team.

We are searching for a strong backend-oriented engineer with deep expertise in .NET and MS SQL technologies, experience working with enterprise systems, integrations, and high-load database solutions.

Requirements

• 7+ years of commercial software development experience
• Strong experience with C# and .NET / ASP.NET
• Deep knowledge of MS SQL Server and T-SQL
• Hands-on experience with database design, optimization, and troubleshooting
• Experience with OLTP, DWH, ETL pipelines, SSIS, and reporting systems
• Experience with RESTful web services and third-party integrations
• Experience working with Azure SQL or cloud database solutions
• Understanding of CI/CD processes and Git workflows
• Experience supporting and developing enterprise-level systems
• Strong analytical and problem-solving skills
• English level — B1+ or higher

Nice to Have

• Experience with Python
• Experience with Azure Data Factory
• Knowledge of SSRS / SSAS
• Experience with CRM or ERP systems
• Experience with high-load systems
• Understanding of database administration processes

Responsibilities

• Develop and maintain backend services and enterprise applications
• Design, optimize, and support MS SQL databases
• Create and maintain ETL pipelines and reporting solutions
• Integrate external services and APIs
• Analyze and improve system performance
• Troubleshoot production issues and support business-critical systems
• Collaborate with distributed international teams
• Participate in technical discussions and solution improvements

We Offer

• High-impact leadership role across a group of tech companies

• Opportunity to build a modern AI-first marketing function from scratch

• Freedom in decision-making and real business impact

• Remote-first, flexible format

• Long-term collaboration

Hiring Process

• Introductory call with recruiter
• Technical interview
• Final client interview
• Offer stage

About the client:

Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead FullStack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers.

About the role:

We’re looking for a Senior Software Engineer who takes end-to-end ownership, thrives in ambiguity, and wants to build systems that matter. This role is central to rethinking and rebuilding our clients’ auto repossession and remarketing platform, a system that directly influences how vehicles are recovered, processed, and remarketed across the big automotive ecosystem. This is an AI-first engineering role—not in name, but in practice. You’ll continuously evaluate where AI (including LLMs and agentic tools) can meaningfully improve engineering velocity, system quality, and operational efficiency, while applying strong judgment about where it should not be used.

You’ll help shape architecture, influence technical direction, and own what you build—from design to production. 

What You’ll Do:

Build & Evolve Critical Systems

Rethink and reshape core workflows based on a deep understanding of auto repossession and remarketing processes.

Design and implement scalable, resilient systems using modern architectural principles: clear service boundaries, modularity, and observability.

Incorporate LLMs and AI-driven components to improve data validation, document processing, and operational decision-making.

• Use AI-assisted and agentic coding tools to accelerate development—while maintaining high standards for correctness, security, and maintainability.

Own Architecture & Technical Decisions

Drive architectural discussions and decisions, balancing pragmatism with technical excellence.

• Set and enforce high-quality bars for new services and modules, with a focus on testability, performance, and reliability.
• Identify and reduce technical debt in ways that measurably improve developer velocity and system robustness.

Build With an Ownership Mindset

Work across the full software lifecycle: design, build, deploy, operate, and iterate.

• Embrace a “you build it, you own it” DevOps mindset alongside your team.
• Make thoughtful trade-offs between effort, quality, and user value—always with accountability for outcomes.

Collaborate & Lead

• Work closely with product managers, designers, and other engineers in an agile, cross-functional team.
• Contribute ideas, challenge assumptions, and continuously improve how we build software.
• Mentor and support other engineers through code reviews, design discussions, and technical leadership.

What We’re Looking For:

• Canadian timezone work hours
• A Lead (7+ years of experience) engineer who owns results, not just implementations.
• Someone who enjoys complex problem-solving and isn’t afraid of legacy systems—or changing them.
• Strong engineering fundamentals: clean code, testing discipline, system design, and performance awareness.
• Strong experience with TypeScript and modern React / Next.js
• Strong experience building production systems with .NET (Core / modern .NET preferred).
• Strong experience building production systems with C#
• Comfort operating in production environments and learning from real-world feedback.
• A builder’s mindset: If you can think it, you can build it. If you build it, you own it.
• Experience leveraging AI, Generative AI (GenAI) to enhance engineering productivity, automate repetitive tasks, and optimize workflows. You should demonstrate the ability to integrate AI-driven solutions into your daily work — such as code generation, debugging, reviews, documentation, and decision support—to improve efficiency for yourself and your teams. A proactive approach to exploring and implementing AI tools that drive innovation and streamline development processes is highly valued. (Strong must)

Experienced Microsoft.NET developer in building backend systems in Microsoft Azure. You will design and build services in a service oriented architecture.

What We Seek:

• Proven experience in designing and building APIs in ASP.NET (version 8.0 or higher)
• Proven experience with Entity Framework Core (version 8.0 or higher)
• Proven experience with Microsoft Azure
• At least 8 years of professional experience with C#
• At least 8 years of experience in building unit and integration tests
• Knowledge of service-oriented architecture (SOA) principles
• Knowledge of integration patterns and principles
• Knowledge of OAuth and OpenID Connect security protocols
• Adheres to SOLID principles
• At least 7 years of experience with Azure DevOps and Git

• Understanding of UML activity diagrams and sequence diagram.

   

A plus when has:

• Proven knowledge of the following Azure Platform Services; App Service, Service Bus, Key Vault, Storage (blob- and table storage), SQL Database, AI Search
• Proven knowledge of Azure DevOps yaml pipelines in combination with powershell and Azure deployment services
• Proven knowledge of T-SQL (SQL Server)
• Proven knowledge of the IDesign Method

What We Offer:

• Transparent bonus payment system
• Competitive salary with regular compensation reviews
• Opportunity to bring your ideas to life and lead the entire process
• 40-hour workweek with flexible scheduling

• Paid vacation and sick leave benefits

   

Experienced Microsoft.NET developer in building backend systems in Microsoft Azure. You will design and build services in a service oriented architecture.

Requirements:
 

• At least 3 years of experience designing and building APIs in ASP.NET (version 8.0 or higher)
• At least 3 years with Entity Framework Core (version 8.0 or higher)
• At least 3 years with Microsoft Azure
• At least 4 years with C#
• At least 4 years building unit and integration tests
• Knowledge of service oriented architecture principles
• Knowledge of integration patterns and principles
• Knowledge of OAuth / OpenID Connect security protocols
• Works according to SOLID principles
• At least 3 years with Azure DevOps and Git
• Understanding of UML activity diagrams and sequence diagrams

Nice to have:

• Azure Platform Services (App Service, Service Bus, Key Vault, Storage, SQL Database, AI Search)
• Azure DevOps YAML pipelines with PowerShell and Azure deployment services
• T-SQL (SQL Server)
• The IDesign Method

What We Offer:

• Transparent bonus payment system
• Competitive salary with regular compensation reviews
• Opportunity to bring your ideas to life and lead the entire process
• 40-hour workweek with flexible scheduling
• Paid vacation and sick leave benefits

About the Role

We're looking for a skilled Middle .NET Developer to strengthen our backend engineering team. You'll build and maintain scalable applications using modern .NET technologies, collaborate with cross-functional teams, and contribute to architectural decisions. This role provides an excellent opportunity to deepen your expertise and progress toward a senior position.
 

Key Responsibilities

• Develop and maintain robust applications using .NET Framework and .NET Core
• Design and implement scalable backend solutions following SOLID principles
• Build and optimize REST APIs and web services
• Collaborate with frontend, DevOps, and product teams on feature delivery
• Conduct code reviews and provide mentorship to junior developers
• Troubleshoot complex issues and implement reliable solutions
• Participate in system architecture discussions and technical planning
• Write clean, well-tested code with comprehensive documentation

Required Skills

• 3-5 years of professional .NET development experience
• Strong proficiency in C# and .NET Core/.NET Framework
• Experience with ASP.NET Core and building REST APIs
• Knowledge of SQL Server and relational databases
• Familiarity with Entity Framework or similar ORM tools
• Solid understanding of LINQ and async/await patterns
• Experience with version control (Git)
• Proficiency with unit and integration testing (xUnit, NUnit, Moq)
• Strong problem-solving and communication skills

Preferred Qualifications

• Experience with microservices architecture and distributed systems
• Knowledge of message brokers (RabbitMQ, Azure Service Bus)
• Familiarity with Docker and containerization
• Experience with CI/CD pipelines and DevOps practices
• Azure cloud platform experience
• NoSQL database knowledge (MongoDB, Redis)
• Experience with dependency injection and IoC containers
• Agile/Scrum methodology background

What We Offer

• Competitive salary based on experience
• Remote or flexible work arrangement
• Professional development opportunities and training budget
• Collaborative and innovative work environment
• Clear path to senior/lead developer roles
• Comprehensive benefits package

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 · 2+ 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.