Back End Developer

Are you passionate about building robust, scalable software solutions that streamline operations and drive business transformation? At

Kensium

, we empower retailers, wholesalers, and distributors through modern digital platforms that simplify workflows, enhance visibility, and unlock growth. This role is ideal for a

Senior .NET Developer

who combines strong technical expertise with a strategic mindset, thrives in a collaborative environment, and is committed to delivering high-quality, high-impact solutions.

As a Senior Developer – .NET, you will: Lead the design, development, and deployment of applications using C#, .NET, ASP.NET Core, and Web APIs Architect and implement integrations with external systems including eCommerce platforms, payment gateways, and third-party APIs Collaborate closely with business analysts, project managers, and QA teams to translate business requirements into scalable technical solutions Optimize application performance, maintain high code quality, and ensure scalability across multiple client implementations Contribute to architectural decisions and enforce best practices around security, performance, and maintainability Stay current with evolving .NET technologies, frameworks, and industry best practices

We’re looking for someone who is: Highly proficient in C#, .NET, ASP.NET Core, and RESTful API development Experienced in SQL Server, data modeling, and performance optimization Skilled in applying design patterns, clean architecture, and SOLID principles A strong problem-solver who can balance technical depth with business context Comfortable mentoring junior developers and providing technical leadership Passionate about building scalable systems and delivering measurable value to clients

Roles & Responsibilities: Lead the design and development of scalable, high-performance applications using C#, .NET, ASP.NET Core, and Web APIs Architect and implement secure, reliable API integrations (REST) with external systems, including complex data mapping and transformation Design and optimize data access layers using EF Core, Dapper, and SQL, ensuring performance, consistency, and reliability Apply advanced .NET concepts such as Generics, Delegates, Events, Event Handlers, LINQ, and GC generations Analyze and improve application performance through profiling, diagnostics, and memory optimization Develop and enforce clean architecture, SOLID principles, and design patterns across solutions Implement security best practices, including authentication, authorization, data protection, and secure API design Build and maintain cloud-ready and distributed systems, ensuring scalability and fault tolerance Contribute to DevOps and deployment pipelines, including CI/CD, containerization, and environment automation Develop modern UI components where applicable using Blazor Hybrid (Blazor + .NET MAUI) or other frontend frameworks Conduct and lead code reviews, ensuring code quality, maintainability, and adherence to standards Collaborate closely with Product Owners, Business Analysts, QA, and DevOps teams to deliver business-aligned solutions Mentor junior and mid-level developers, providing technical guidance, design feedback, and best practices Create and maintain technical documentation, including architecture diagrams, API contracts, and deployment guides Leverage AI-assisted development tools (e.g., GitHub Copilot, ChatGPT) to improve productivity and code quality Stay current with .NET ecosystem advancements, cloud technologies, and industry trends Actively participate in Agile ceremonies including sprint planning, estimations, reviews, and retrospectives

Experience and Skills

Technical Expertise: 7+ years of professional software development experience, with strong hands-on expertise in .NET, C#, and enterprise application development High proficiency in C#, ASP.NET Core, Web APIs, and SQL, with a strong focus on scalable and maintainable backend systems Proven experience in designing and developing RESTful APIs, business workflows, and data synchronization across distributed systems Deep understanding of .NET fundamentals and internals, including Generics, Delegates, Events, Event Handlers, LINQ, and GC generations Strong experience with data access and persistence layers, including Entity Framework Core, Dapper, and advanced SQL optimization Hands-on experience with performance tuning and profiling, including memory management, threading, and async/await patterns Solid knowledge of software architecture and design patterns, including Clean Architecture, SOLID principles, and domain-driven design concepts Experience developing and maintaining Roslyn analyzers, custom tooling, or code quality automation (preferred) Familiarity with frontend technologies such as Blazor Hybrid (Blazor + .NET MAUI) or modern JavaScript frameworks (React / Angular) is a plus Proficient with Git, Visual Studio, and modern .NET development workflows Experience working with CI/CD pipelines, automated testing, and container-based deployments Strong understanding of application security, including authentication, authorization, secure API design, and data protection Exposure to cloud platforms and distributed systems, including scalability, resiliency, and fault tolerance patterns

Innovation & AI-Driven Development Experience using AI-assisted tools like GitHub Copilot, ChatGPT, or Cursor for code generation, validation, and optimization. Knowledge of automated testing frameworks, code quality tools, and static analysis for .NET environments. Proactive in leveraging automation and AI to improve development speed, maintainability, and reliability.

Collaboration & Leadership Excellent communicator with the ability to collaborate effectively across Product, QA, Delivery, and Client-facing teams. Skilled in mentoring developers, conducting code reviews, and contributing to technical architecture decisions. Strong problem-solving mindset with a focus on debugging, performance optimization, and scalable design

Minimum Qualifications: Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience 7+ years of professional software development experience with strong focus on .NET and C# Proven hands-on experience with ASP.NET Core and RESTful Web API development Strong expertise in SQL Server, database design, query optimization, and performance tuning Solid understanding of .NET fundamentals, including Generics, Delegates, Events, Event Handlers, LINQ, and garbage collection (GC generations) Experience with data access technologies such as Entity Framework Core and Dapper Demonstrated experience in performance profiling, debugging, and optimization of .NET applications Strong knowledge of software architecture, design patterns, and clean coding practices Experience with version control systems (Git) and modern development workflows Familiarity with CI/CD pipelines, automated builds, and deployments Understanding of application security principles, including authentication, authorization, and secure API design Ability to collaborate effectively with cross-functional teams and mentor junior developers