CrawlJobs Logo

.NET Developer

maddevs.io Logo

Mad Devs

Location Icon

Location:

Category Icon
Category:
IT - Software Development

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

Not provided
Save Job
Save Icon
Apply Position

Job Description:

We are looking for a .NET Developer for a platform built on a microservice-based backend architecture. The system handles real-time communication, geospatial calculations, media processing, and integrations with multiple external services. The backend is developed using .NET 7, C# 11, and follows Clean Architecture and Domain-Driven Design (DDD) principles.

Job Responsibility:

  • Design, develop, and maintain backend microservices using ASP.NET Core (.NET 7)
  • Implement business logic following Clean Architecture and DDD
  • Work with PostgreSQL/PostGIS for complex data models and geospatial queries
  • Build and optimize real-time communication features using SignalR
  • Develop and maintain background jobs using Hangfire
  • Integrate external services (OAuth providers, payment systems, media services, notifications)
  • Optimize performance, scalability, and database queries
  • Ensure application security following OWASP Top 10
  • Participate in code reviews, refactoring, and architectural discussions
  • Collaborate closely with product and frontend teams

Requirements:

  • 3+ years of experience with .NET 7 and C# 11
  • 1+ years of experience with EF Core 7 (migrations, DbContextFactory, DbContextPool, compiled models)
  • Deep understanding of ASP.NET Core, Web API, Middleware, Dependency Injection
  • Advanced use of LINQ, async/await, and asynchronous programming
  • Experience with PostgreSQL
  • Experience with microservices, high-load systems and real-time systems (SignalR or similar)
  • Strong understanding of Redis (StackExchange.Redis, Sorted Sets, Lua scripts)
  • Knowledge of DRY, SOLID, and KISS principles
  • Analytical mindset and attention to detail
  • English at a B1-B2 level, Russian at a B2 level

Nice to have:

  • Media processing experience (ImageSharp, FFmpeg)
  • AWS S3 or similar object storage
  • Experience with payment integrations (Stripe, PayPal, Apple IAP, Google Play Billing)
  • Firebase, Google Cloud Vision API
  • Unit and integration testing (xUnit/NUnit, Moq/NSubstitute)
  • Experience working with legacy codebases
  • Experience with large-scale databases and long-lived projects
What we offer:
  • Flexible working hours
  • Remote-first culture
  • Long-term projects
  • Salary in dollars
  • Professional communities
  • Onsite business trips
  • Training budget
  • Paid conferences

Additional Information:

Job Posted:
January 06, 2026

Work Type:
Remote work
Icon
Mad Devs - All Job Offers
Job Link Share:
Copy Link Icon
Facebook Icon Twitter Icon LinkedIn Icon

Looking for more opportunities? Search for other job offers that match your skills and interests.

Briefcase Icon

Similar Jobs for .NET Developer

.Net Developer

Fyld is a Portuguese consulting company specializing in IT services. We bring hi...
Location
Location
Portugal , Lisboa
Salary
Salary:
Not provided
https://www.fyld.pt Logo
Fyld
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Degree in Computer Engineering or a similar
  • 3/4 years of professional experience in backend development
  • Experience with .NET Core or .NET Framework (.NET 5/6 versions)
  • Knowledge of Azure DevOps or other CI/CD tools
  • Knowledge of HTML, CSS, and JavaScript (will be valued)
  • Understanding of clean code principles, design patterns, and modern architecture
  • Fluent in English
  • Fulltime
Read More
Arrow Right

.NET Developer

You’ll work on developing and maintaining .NET applications using C# and .NET Co...
Location
Location
United States , Austin
Salary
Salary:
Not provided
algebrait.com Logo
AlgebraIT
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 3+ years of .NET development experience
  • Proficiency in C# and .NET Core
  • Experience with SQL Server and ASP.NET
  • Strong analytical and problem-solving abilities
  • Bachelor’s degree in a related field
Job Responsibility
Job Responsibility
  • Write clean, scalable code using .NET technologies
  • Test and deploy applications
  • Troubleshoot and debug software issues
  • Collaborate with team members to gather and refine requirements
  • Maintain and update existing applications
  • Implement best coding practices to ensure quality and security
  • Optimize applications for performance
  • Document development processes and code changes
  • Work closely with QA to resolve issues
  • Stay updated on .NET and C# advancements
  • Fulltime
Read More
Arrow Right

Lead .NET Developer

iPromote is a digital advertising platform designed to simplify and enhance onli...
Location
Location
Salary
Salary:
140000.00 - 180000.00 USD / Year
ipromote.com Logo
iPromote
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s degree in Computer Science, Engineering, or a related field
  • 8+ years of software development experience with at least five of those years in .NET software development
  • 3+ years of experience in a lead or supervisory role
  • Proven track record of effectively managing a team of senior software engineers
  • Strong understanding of object-oriented programming, RESTful APIs, and relational databases (e.g. PostgresSQL)
  • Familiarity with Agile/Scrum development processes
  • Excellent communication, leadership, and interpersonal skills
Job Responsibility
Job Responsibility
  • Design, develop, test, and deploy scalable .NET applications using C#, .NET Core, and related technologies
  • Collaborate with frontend engineers, product managers, and the QA team to deliver robust and user-friendly solutions
  • Write clean, maintainable code following best practices and company standards
  • Perform code reviews and provide constructive feedback to team members
  • Ensure system security, scalability, and performance optimization
  • Heavily utilize gen AI tooling to increase productivity
  • Lead and mentor a team of 4-6 software developers
  • Assign and manage workloads, set priorities, and oversee the development lifecycle
  • Conduct regular one-on-one meetings, provide coaching and career development
  • Collaborate with cross-functional stakeholders to align project goals and timelines
What we offer
What we offer
  • Comprehensive medical, dental, vision, life insurance and long term disability benefits
  • 4% employer matched 401k plan upon hire
  • Competitive vacation and sick pay along with generous paid holidays
  • Fulltime
Read More
Arrow Right

Senior .NET Developer

An experienced .NET developer to carry on features development on the UI and bui...
Location
Location
Portugal , Lisbon
Salary
Salary:
Not provided
https://www.inetum.com Logo
Inetum
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Minimum of 10 years experience in .Net /C# development
  • Expert on Microsoft .Net Framework
  • Experience with UI optimization and UI unit tests automation
  • Experience with profiling tools, to optimize memory and CPU usage
  • Interested in learning the business domain
  • Fluent in English(both written and spoken) is mandatory
Job Responsibility
Job Responsibility
  • Development of maintenance and evolution features and defects Fixing . Ensure agreed upon code quality are met with code reviews
  • Able to engage across BA, Test team and production support
  • Active participation in Sprint Planning’s and other agile ceremonies
  • Provides a clear progress update on tasks to the domain manager on a regular basis, escalates risk and issues in a timely manner
  • Engagement with extended teams onshore and offshore during the course of assigned development tasks
  • L3 Production support
  • Non production Environment maintenance for Regression and Functional testing Support
  • On call support – specially during weekday evenings covering New York as early morning is covered by Mumbai, and occasional cover for release weekends
  • Fulltime
Read More
Arrow Right

.NET Web Developer

The .NET Developer plays a key part in developing industry-leading software. In ...
Location
Location
United States , Lincoln
Salary
Salary:
Not provided
sandhills.com Logo
Sandhills Global
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Web/API development in the .NET Framework (C#, VB, .NET Core)
  • Strong relational database knowledge
  • SQL Server (Scripting, Indices, Views, Stored Procedures)
  • Ability to perform effectively in a team-oriented environment
  • Ability to quickly learn new technologies and business functions
  • Strong analytical skills to determine effective approaches to business solutions
  • Understanding of best practices and methods to integrate applications within the organization and with external partners
  • Strong knowledge of the full software development life cycle, with exposure to agile or iterative approaches to delivery preferred
  • Microsoft IIS
  • Windows/Web Services
Job Responsibility
Job Responsibility
  • Participate in solution design to satisfy a wide range of business needs
  • Analysis and translation of business requirements into technical requirements for development, and creation of design documents and technical specifications
  • Adhere to best practices and standards in the areas of development, technology, and security
  • Provide post-implementation support, including, but not limited to, monitoring application performance and debugging existing code
  • Keep up with advancements and changes in technology and develop an understanding of how new technologies can be leveraged to provide business solutions
  • Many projects also employ client-side technologies, including JavaScript, jQuery, CSS3, and HTML5, to develop robust and highly interactive web-based user interfaces
  • Projects may include development of new products and new features or maintenance of existing software using agile practices as part of a collaborative and open environment
  • Assume other duties as assigned
What we offer
What we offer
  • 4.5 day workweek
  • Fulltime
Read More
Arrow Right

Junior .NET Developer

Amaris Consulting is looking for a motivated Junior .NET Developer with at least...
Location
Location
Belgium , Brussels
Salary
Salary:
Not provided
amaris.com Logo
Amaris Consulting
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Master’s degree in Computer Science or a related field
  • Minimum of 2 years of experience in software development
  • Strong proficiency with Microsoft technologies (.NET, C#, ASP.NET)
  • Comfortable working in Agile environments
  • Strong analytical and communication skills
  • Fluent in English and French (spoken and written)
  • Available to work on-site in Brussels
Job Responsibility
Job Responsibility
  • Participate in the design, development, and maintenance of applications using C# and .NET technologies
  • Collaborate closely with senior developers and technical teams to understand business requirements and deliver effective solutions
  • Contribute to unit testing and ensure code quality through best development practices
  • Apply secure coding standards and follow established software development methodologies
  • Participate in code reviews to maintain the quality of deliverables and foster continuous learning
  • Provide technical support to users and assist in troubleshooting issues or resolving bugs
  • Write and maintain clear and concise technical documentation
  • Gain exposure to DevOps tools and assist in deployment and automation processes
What we offer
What we offer
  • A truly international and multicultural work environment
  • Access to training programs and certifications to accelerate your development
  • An R&D lab where you can explore new technologies and approaches
  • The opportunity to propose and lead innovative ideas within the company
  • Personalized coaching and mentoring from experienced professionals
  • A tailor-made career path, aligned with your growth ambitions
  • Fulltime
Read More
Arrow Right

Senior .NET MAUI Mobile Developer

We are looking for a Senior .NET MAUI Developer to join a project in the health,...
Location
Location
Ukraine
Salary
Salary:
Not provided
honeycombsoft.com Logo
Honeycomb Software
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years in mobile development, including delivery of production mobile apps from scratch
  • Strong experience with .NET, C#, and .NET MAUI (or Xamarin + migration experience)
  • Hands-on experience building hybrid apps with clean architecture patterns (MVVM, DI, clean architecture)
  • Solid knowledge of automated mobile testing frameworks
  • Experience publishing apps to both App Store and Google Play
  • Comfortable working in a cross-functional environment
  • Understanding of mobile CI/CD tooling and processes
  • Ability to work with APIs, interpret specs, and propose improvements
  • English: upper-intermediate or higher
Job Responsibility
Job Responsibility
  • Lead the end-to-end development of a new .NET MAUI mobile application for iOS and Android
  • Migrate functionality from an existing native Swift-based iOS app (4 years old, small codebase, no documentation/tests) into a clean hybrid architecture
  • Deliver full feature parity with the current version and implement selected improvements
  • Architect a scalable, maintainable mobile codebase following best practices
  • Implement data visualization and basic IoT device control features using an existing backend API
  • Build a comprehensive automated test suite (unit, integration, UI tests)
  • Prepare high-quality technical documentation
  • Collaborate closely with UI/UX designers, data engineers, backend developers, and architects
  • Participate in the creation of a mobile CI/CD pipeline supporting near zero-touch deployments
  • Recommend and integrate mobile analytics tools if needed
What we offer
What we offer
  • Lead the full rebuild of a real, production mobile product
  • Direct impact on architecture, code quality, and long-term technical direction
  • Collaboration with a strong, experienced internal team
  • Clear roadmap with future feature expansion (media capture, enhanced analytics, additional user flows)
  • Strong focus on engineering culture: maintainability, testing, automation, clean code
  • A role with high ownership and the space to make meaningful technical decisions
  • Fulltime
Read More
Arrow Right

Junior-Intermediate .NET Backend Developer

We are looking for an enthusiastic Software Developer to join our team, where yo...
Location
Location
Poland , Gdańsk
Salary
Salary:
Not provided
navblue.aero Logo
NAVBLUE Limited
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 1+ years of professional experience in software development
  • Recent experience developing software with .NET or .NET Framework, C#, and AWS (or other cloud service providers)
  • Experience writing unit tests, component testing or integration testing
  • Applying best practices to keep code maintainable
  • Hands on experience with ASP.NET Web API
  • Experience working with databases and understanding of Entity Framework
  • Bachelor’s Degree in software engineering or a related field
  • Good spoken and written English skills
Job Responsibility
Job Responsibility
  • Develop new and maintain existing .NET (C#) code in an AWS cloud environment
  • Contribute to code quality by applying coding best practices, learning about test-first mindsets, and following security standards
  • Actively participate in implementing various types of tests, including unit, component, and functional tests, to help ensure software reliability
  • Assist in building and improving development processes
  • Work collaboratively within a small agile team to deliver new features and fix defects
  • Support software architecture discussions and learn to translate system-level designs into robust, maintainable, and high-quality code, following best practices in software engineering
What we offer
What we offer
  • Hybrid work environment with up to 2 days working from home weekly
  • Stable employment based on a full-time job contract
  • International working environment in a dynamic company
  • Access to the latest knowledge and technologies enabling professional development
  • Training and development possibilities
  • Participating in international projects and international trips
  • Competitive salary dependent on experience and qualifications
  • Flexible working hours and work-from-home opportunities
  • Private medical coverage for you and your family
  • Sport card
  • Fulltime
Read More
Arrow Right
Jobs by Category
Art and Entertainment Jobs Banking Jobs Call Center Jobs Construction Jobs Consulting Jobs Customer Service Jobs Education Jobs Energy Jobs Finance Jobs Gastronomy Jobs Health and Beauty Jobs Hospitality and Tourism Jobs Human Resources Jobs Insurance Jobs IT - Administration Jobs IT - Software Development Jobs Legal Jobs Logistics Jobs Manufacturing Jobs Marketing, Digital Marketing, SEO, SEM Jobs Media Jobs Nursing Jobs Office Administration Jobs Pharmacy Jobs Physical Work Jobs Public Relations Jobs Public Sector Jobs Purchasing Jobs Quality Control Jobs Real Estate Jobs Research and Development Jobs Sales Jobs
Job Positions Jobs by Country
United States Jobs United Kingdom Jobs India Jobs Canada Jobs Australia Jobs Germany Jobs Ireland Jobs Poland Jobs
Company
Blog About Us Contact
Follow Us
Facebook
X (Twitter)
LinkedIn
Instagram
© 2026 CrawlJobs Ltd. All Rights Reserved
Terms & Conditions Privacy Policy