Вакансії C# / .NET Developer

Our client is a global music and entertainment conglomerate headquartered in the US.
We are looking for an experienced .NET + React.js developer who can quickly bring value in a dynamic environment.
This position includes a signing bonus.

Responsibilities

• Develop new features
• Conduct code reviews
• Test developed functionality
• Fix bugs

Requirements

• 5+ years of full-stack web application development experience, including 4+ years with C# and JavaScript
• Strong experience with .NET Core (recent versions)
• Solid experience with React.js
• Excellent understanding of front-end technologies
• Experience with database modeling
• Hands-on experience with web services and RESTful APIs
• Proficient understanding of Git version control
• Experience building scalable and maintainable solutions with a long-term vision
• Strong sense of ownership over code and product
• Ability and willingness to step into an existing project

Nice to have

• AWS experience
• Strong spoken English skills

N-iX is looking for Lead .NET Full Stack Engineer to join our team. The project uses cutting-edge technology, and as such, we encourage our Developers to stay ahead of current trends and best practices. Ideally, we’d like a candidate that reflects this, with a keen interest in the latest frameworks and technologies. The primary focus will be to build robust and scalable back-end for the Product using .Net Core 2 and Azure technologies. The work environment is Agile Scrum, with Scrum teams operating in 2 week sprints. This is an opportunity to be part of a fun, lively development team, with good team spirit and a willingness to create good software.

About the client:

Headquartered in London, our Client is an independent software vendor and a leading global provider of software solutions for Enterprise Architecture, Business Process Analysis and Application Portfolio Management. The Client has customers spanning the Americas, EMEA, Australasia and Asia-Pacific regions as well as all verticals sectors, both government and commercial. Core capabilities provided by the Product include an enhanced Microsoft Visio diagramming interface, a powerful central repository for all enterprise architecture or business process models and documentation, and a range of tools for visualization, analysis and decision-making.

Responsibilities:

• Working in a Scrum Team as a Full Stack lead developer
• Developing middleware for SaaS multi-tenant web application using .Net Core technologies
• Working with C#, SQL and Graph DBs in an Azure Microservice environment
• Formulating solutions to technically challenging requirements
• Collaborating with the Product Owner to define and refine Story Acceptance Criteria
• Selecting Stories from the Backlog with the Team for each Sprint
• Adhering to and promoting existing coding standards and practices
• Code reviewing team members and guiding S.O.L.I.D principles in the team
• Collaborating on architecture design and technology choices
• Mentoring, conducting performance reviews, and managing team members as a team lead

Requirements:

• 5+ years in web application development
• Expert experience in C#/.Net
• Knowledge of React
• Technical leading experience
• REST-based API design and development
• MS SQL and Cosmos DB database technologies
• Azure technologies
• Experience with integration testing

As a plus:

• Knowledge of Azure DevOps is a good asset
• Basic Experience with MS SharePoint
• Collaborative but decisive personal style
• Experience working in a Micro-front ends and/or Micro-services environment
• Understanding of working with CI/CD

How exactly you can influence the development of the Company:

• participate in development planning
• develop new functionality and support the existing one
• analyse business requirements and ask questions to implement a technical solution
• interact closely with the team, learn from colleagues’ knowledge of the subject area
• make suggestions for technical improvements to the system
• participate in team code review
• cover the functionality with tests (unit, integration, component)
• be responsible for the quality of the product

Challenges for three months:

• get to know the processes and approaches in the company’s work
• implement at least one feature based on the technical design proposed by the Tech Lead, covered by automated tests
• investigate bugs and write tests
• master the business logic of existing services and approaches
• master approaches to designing and writing code within the company
• speed and correctness of task completion

To achieve the results, you will need:

• 3 years of development experience on the .NET platform
• knowledge of C#, .NET Core
• experience with microservice architecture
• experience with message brokers (Kafka/RabbitMQ/Amazon SQS)
• strong understanding and use of OOP and SOLID principles
• experience with HTTP, ASP.NET Core, REST
• experience with relational DBMS, SQL, PostgreSQL
• coverage of functionality with tests
• CI; Docker configuration
• knowledge of English at the Intermediate level

We are looking for a talented, professional and hard-working individual to serve as a Backend software developer to join the development team. Our environment is fast-paced, challenging, and exciting along with respect for work-life balance. You’ll work with a team of passionate, engaged individuals.
Our client is the first global aggregator of official information in real-time. The system tracks and collects all content issued by relevant organizations and companies, as soon as the content is disclosed online by the official sources. The content is normalized and categorized to highly relevant tags and codes and is then distributed and seamlessly integrated with third-party systems in the media industry, in financial platforms and more.

Experience / Skills required:

• 4+ years of professional experience in backend development
• .NET Core & .NET Framework and C# programming language
• Familiarity with AWS services such as S3, EC2 and SQS.
• Microsoft SQL databases, MongoDB
• Experience in low-latency text processing and manipulation using parsing, pattern-matching (REGEX) and other techniques
• Excellent interpersonal skills, especially in listening and questioning
• Proactive attitude
• Upper-Intermediate English and better

Good to have:

• VB. NET
• Web development and/or knowledge in HTML, XPath, CSS selectors
• ElasticSearch, Redis, NCache
• AWS Cloud
• GNU/Linux OS
• Experience in geographically distributed environments

Responsibilities:

• Write clean, scalable and testable code using .NET programming language C#
• Work on the data extraction project where the engineer needs to perform text normalization, parsing and pattern matching as part of a real-time document processing workflow using AI as part of the overall workflow
• Revise, update, refactor and debug code
• Improve existing software
• Remain up to date with the terminology, concepts and best practices for coding desktop apps and services

We are looking for a Senior Backend Developer to take a key role in designing and implementing the core systems of an educational, game-based platform for children. You will ensure the platform is scalable, reliable, and secure, while supporting a rich and interactive user experience.

What we’re looking for:

• 5+ years of .Net development experience
• ASP.NET Core 3.1+; .NET 7.0+
• Highload scalable backend architecture experience
• Dapper and Entity Framework experience
• Monolith and SOA development experience
• Strong knowledge T-SQL and couple SQL databases(MySQL/Postgresql/Aurora/MariaDB etc.)
• NoSQL experience
• Protobuf, WebSockets etc. experience
• xUnit/nUnit experience

Nice to have:

• Microsoft Orleans
• Blazor usage experience
• AWS experience: EC2, ECS, RDS, Rabbit MQ/SQS/Kafka, Lambda, ElastiCache, Cloudwatch

What the role is about:

• Design, implement, and maintain backend systems that power the game-based learning platform.
• Develop APIs, databases, and server-side logic that support interactive gameplay and educational features.
• Ensure scalability, performance, and security of all backend components.
• Troubleshoot, debug, and optimize systems to maintain high availability and responsiveness.
• Participate in technical decision-making and architecture discussions to shape the platform’s evolution.

We are seeking a senior-level .NET Developer with an understanding of architecture to join the team of our US-based Customer involved in the development of a range of products for homeowners’ associations.

Responsibilities:

• Work closely with Architects to implement service decomposition strategies
• Refactor and enhance existing service code for performance, maintainability, and scalability
• Contribute to improving the structure and reliability of the back-end service layer
• Assist in the rewriting and modernization of legacy back-end services into a microservices architecture
• Support and guide team members through mentorship and collaboration
• Contribute actively to backlog refinement to help the team identify optimal technical solutions
• Deliver development tasks on schedule, ensuring high standards of quality, performance, and adherence to coding best practices
• Maintain clear and thorough documentation of progress, decisions, and scope adjustments in Jira
• Oversee and coordinate software deployment processes
• Take ownership of complex development challenges and document implemented solutions
• Partner with the QA team to investigate and resolve defects identified during sprints
• Demonstrate accountability, dependability, and a proactive approach to communication

Requirements:

• Strong experience with .NET (C#) and microservices architecture
• Strong experience with ASP .NET Core Web API
• In-depth knowledge of RESTful APIs and distributed systems
• Experience with Azure Cloud Platforms
• Experience with Azure Functions
• Experience with Azure Service Bus
• Familiarity with Docker and Kubernetes for containerization and orchestration (preferred)
• Experience with Azure SQL Database
• Proficiency in Entity Framework for database management
• Strong problem-solving and troubleshooting skills
• Ability to refactor legacy code and optimize services for scalability and performance
• Reliability and accountability in meeting deadlines and project milestones
• Excellent communication skills in English, with the ability to collaborate effectively in a team
• English level – Upper-Intermediate or higher

Will be a plus:

• Experience with Azure Networking

Svitla Systems Inc. is looking for a Senior Full Stack Engineer with Blazor and C# for a full-time position (40 hours per week) in Ukraine. Our client is a comprehensive property maintenance platform designed to streamline and connect managers and field technicians within a single, user-friendly system. It offers an all-in-one maintenance department experience for HOA (Homeowners Association) property managers without the need to hire additional staff. The platform automates workflows, enabling more effortless follow-ups, real-time visibility into work orders, vendor performance, and building maintenance needs. Built by industry professionals with over 25 years of experience, the platform centralizes all communication, task tracking, and technician coordination in one place, making property maintenance more efficient and transparent.You’ll integrate custom UI/UX designs with the existing backend infrastructure for a web application.
Technical Stack Integration:

• Backend: PostgreSQL database with C#/Blazor middleware;
• Frontend integration is required with the existing Blazor framework;
• HTML, CSS, and JavaScript implementation as needed;
• Third-party service integrations: Mailgun, OpenAI API, and Mapbox API for geocoding.

Requirements

• 5+ years of experience in software development.
• Demonstrated experience with the Blazor framework and C# integration.
• Strong knowledge of HTML5, CSS3, and modern JavaScript.
• Experience converting Figma designs to production-ready code.
• Knowledge of responsive design principles and cross-browser testing.
• Familiarity with API integration and third-party service implementations.

Responsibilities

• Convert Figma page designs into working frontend components.
• Integrate with the existing Blazor application framework.
• Implement responsive design patterns for both desktop and mobile devices.
• Create reusable UI components and modules according to the design system.
• Ensure proper integration with backend API endpoints.
• Maintain compatibility with existing middleware architecture.

Привіт, давай знайомитись! Ми компанія – онлайн-платформа з пошуку роботи в Україні. Ми є частиною європейського холдингу Grupa Pracuj Ltd і партнером міжнародної мережі The Network. Щодня ми допомагаємо тисячам людей знайти роботу, а компаніям знайти співробітників якомога швидше та комфортніше!
Сьогодні у тебе є можливість приєднатись до нашої команди професіоналів, які впевнено крокують до однієї цілі та об'єднані спільними інтересами та життєвими цінностями, адже ми перебуваємо в пошуках Backend Engineer. Ти потрапиш в команду, яка відкрита до пропозицій та ідей, адже можливість впроваджувати власні ідеї та реалізовувати їх – наше все!

Нам потрібен саме ти, якщо:

• Маєш досвід с.NET Framework або .NET Core від 5х років.
• Розумієш і можеш використовувати на практиці принципи OOP + SOLID.
• Маєш досвід написання REST API на ASP.NET Core.
• Маєш досвід написання асинхронних і багатопотокових програм.
• Розумієш HTTP протокол (headers, caching, cookies, JWT-authorization, CORS).
• Маєш досвід роботи з серверним кешуванням (бажано Redis).
• Володієш SQL, працював з реляційними БД (бажано Microsoft SQL Server).
• Маєш досвід роботи з Docker.
• Маєш досвід с GIT.

Буде плюсом:

• Досвід роботи з Elasticsearch;
• Досвід роботи з Kubernetes;
• Досвід роботи з GraphQL.

Чим ти будеш займатись:

• Розробкою компонентів платформи robota.ua;
• Створенням рішень з нуля (Test driven approach);
• Перетворенням вимог в набір юніт / інтеграційних тестів;
• Брати участь в грумінгах, плануваннях та оцінці;
• Розвивати нашу платформу, пропонувати технічні рішення, покращувати процеси.

We are seeking a motivated Junior .NET Developer to join our team!

About project

A platform for mobile operators focused on invoicing, billing, and notifications. This solution is designed to help regular and business customers manage mobile services, control expenses, handle subscriptions, renew contracts, and activate SIM cards more efficiently.

Requirements

• Solid understanding of the .NET Framework, .NET 7+, and C# programming language;
• Strong knowledge of SQL Server, including query optimization and database design;
• Hands-on experience with ADO.NET for database interaction;
• Experience working with Web APIs;
• Familiarity with version control systems, particularly Git;
• Basic understanding of software development principles: testing, debugging, and code structure;
• Strong problem-solving skills and attention to detail;
• Good communication skills and ability to work in a team-oriented environment;
• Quick learner, adaptable to new technologies and development practices;
• Intermediate to Upper-Intermediate English level.

Responsibilities

• Develop, maintain, and enhance web and desktop applications using .NET technologies (including .NET 7 or higher);
• Design and implement database queries and scripts using SQL Server;
• Work with ADO.NET to manage data access layers and interact with SQL databases;
• Build and consume Web APIs for seamless integration with other systems;
• Participate in the full software development lifecycle – design, coding, testing, and deployment;
• Collaborate with cross-functional teams to define, design, and deliver new features;
• Debug and troubleshoot issues across the stack, particularly within .NET and SQL components;
• Follow best practices related to code quality, testing, and CI/CD deployment processes;
• Contribute to improving existing systems and optimizing performance.