Senior Dotnet Developer

E-Solutions; Sydney; Hybrid; AUD 180,000 - 240,000; Full time

Job summary

E-Solutions in Sydney seeks a Senior .NET Developer / Solution Architect to lead architecture and end-to-end design of enterprise applications. You will drive technical roadmaps, define architecture patterns, and mentor teams across the SDLC.

The role requires deep hands-on expertise with .NET Core / Web API, microservices, and cloud platforms (Azure/AWS). Hybrid work in Sydney supports collaboration with business stakeholders and DevOps practices.

Qualifications

• Must have 8+ years in .NET/C# development and architecture.
• Hands-on with .NET Core/ASP.NET Core and Web API.
• Proven experience in solution and application architecture for complex systems.
• Strong knowledge of microservices, RESTful APIs, and cloud platforms.

Responsibilities

• Lead architecture and technical design of enterprise applications.
• Define solution architecture, integration patterns, and roadmaps.
• Design REST APIs, microservices, and event-driven systems.
• Guide modernization, cloud migration, and DevOps practices.
• Mentor developers and conduct architecture/code reviews.
• Collaborate with stakeholders to translate requirements into technical solutions.

Skills

8+ years .NET/C#

Solution Architecture

ASP.NET Core/Web API

Microservices

Azure/AWS cloud

REST APIs

CI/CD/DevOps

Security/Performance

Tools

Docker

Kubernetes

Azure

AWS

Job description

Role: Senior .NET Developer / Solution Architect

Location: Sydney, Australia

Work Arrangement: Hybrid / Onsite

Experience: 8+ Years

Job Overview

We are looking for a highly experienced Senior .NET Developer / Solution Architect with strong hands-on development expertise and proven experience in solution architecture, system design, and technical leadership.

The ideal candidate should be capable of moving beyond development into end-to-end solution design, defining architecture, integration patterns, technology standards, and technical roadmaps for complex enterprise applications.

Key Responsibilities

• Lead the architecture and technical design of enterprise applications using Microsoft .NET technologies.
• Design scalable, secure, and high-performing solutions using C#, .NET Core / .NET 8, ASP.NET Core and Web API.
• Define solution architecture, application architecture, integration architecture, and technical roadmaps.
• Design REST APIs, microservices, event-driven architectures, and distributed systems.
• Evaluate existing applications and recommend modernization, re-platforming, and cloud migration strategies.
• Define integration patterns between applications, databases, third-party systems, and cloud platforms.
• Work closely with business stakeholders, Product Owners, Business Analysts, and Enterprise Architects to translate business requirements into technical solutions.
• Provide technical leadership to development teams and conduct architecture and code reviews.
• Establish and enforce design principles, coding standards, security practices, and architectural best practices.
• Identify technical risks, scalability challenges, performance issues, and recommend appropriate solutions.
• Support development teams throughout the SDLC, from design through implementation, deployment, and production support.
• Contribute to CI/CD, DevOps, containerization, and cloud-native architecture.
• Mentor senior developers and provide technical guidance on complex engineering problems.

Mandatory Technical Skills

• 8+ years of experience in .NET / C# development.
• Strong hands-on experience with .NET Core / ASP.NET Core / Web API.
• Proven experience in Solution Architecture / Application Architecture.
• Strong experience designing enterprise-scale applications and distributed systems.
• Strong knowledge of Microservices architecture and RESTful APIs.
• Experience with Azure or AWS cloud architecture.
• Strong understanding of integration patterns, messaging, APIs, and system-to-system integrations.
• Knowledge of SOLID principles, design patterns, DDD, and clean architecture.
• Experience with Docker / Kubernetes is preferred.
• Experience with CI/CD and DevOps practices.
• Strong understanding of application security, scalability, availability, and performance.

Candidates should have demonstrated experience in:

• Creating High-Level Design (HLD) and Low-Level Design (LLD).
• Making technology and architecture decisions.
• Defining solution architecture diagrams and technical specifications.
• Leading technical discussions with stakeholders.
• Reviewing and approving technical designs.
• Managing technical dependencies and integration points.
• Guiding development teams on architecture implementation.
• Working in Agile/Scrum enterprise environments.

Preferred

• Experience with Azure services, Azure DevOps, AKS, Service Bus, Functions, API Management, or equivalent AWS services.
• Experience with React / Angular.
• Knowledge of Kafka, RabbitMQ, or other messaging platforms.
• Experience with API Gateway / Enterprise Integration.
• Experience with cloud migration and application modernization.
• Australian enterprise/project experience is an advantage.