Senior Software Engineer

Posted Yesterday
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3 Locations
In-Office or Remote
Senior level
Professional Services
The Role
The Senior Software Engineer will develop enterprise applications using .NET technologies, build APIs, optimize databases, and collaborate in Agile teams.
Summary Generated by Built In

Job Description

Overview

We are seeking an experienced .NET Full Stack Developer with strong expertise in building enterprise-grade applications using Microsoft technologies. This role involves designing and implementing moderately complex features across front-end and back-end, developing secure and performant APIs, and optimizing data access with SQL Server. You will collaborate closely with product owners, business analysts, and senior engineers to refine requirements and deliver high-quality solutions in an Agile environment. The position requires hands-on experience with .NET/.NET Core, C#, ASP.NET MVC/Web API, and modern front-end frameworks such as React or Angular. Familiarity with Azure services, CI/CD pipelines, and security practices (OAuth2, OIDC, Azure AD) is essential. Exposure to cloud deployment, DevOps, and Infrastructure as Code concepts is a plus.

Your role
  • Design & Build Features: Implement moderately complex user stories across front-end and back-end using C#, .NET/.NET Core, ASP.NET MVC/Web API, and modern front-end frameworks (React/Angular/Blazor).
  • Requirement Clarification: Work with product owners, business analysts, and senior engineers to refine requirements, estimate tasks, and propose pragmatic technical approaches.
  • Quality & Standards: Write clean, maintainable, and testable code; follow coding standards, design patterns (including SOLID), and contribute to code reviews with constructive feedback.
  • API Development: Design, build, and consume secure, performant REST APIs; integrate with internal/external services. Exposure to gRPC and legacy WCF/SOAP is a plus.
  • Data Work: Create and optimize SQL queries, stored procedures, and schema changes; ensure data integrity and performance considerations.
  • Agile Delivery: Participate in Agile ceremonies (stand-ups, planning, refinement, retros) and consistently meet sprint commitments; maintain work items and documentation in Azure DevOps.
  • DevOps & CI/CD: Contribute to build/release pipelines in Azure DevOps; create or improve pipeline tasks (build, test, quality gates) and support automated deployments.
  • Cloud Readiness: Develop and deploy applications to Azure App Service/Functions; configure app settings, Key Vault references, and troubleshoot environment issues with guidance.
  • Security & Identity: Implement authentication/authorization using Azure AD (Entra ID), OAuth2, OIDC; apply security best practices (input validation, least privilege, secrets management).
  • Operational Support: Investigate and fix bugs; perform root-cause analysis; support incident resolution and postmortems; improve logging, monitoring, and observability.
  • Documentation: Produce clear technical documentation (design notes, API specs, runbooks) for assigned modules and features.
  • Continuous Improvement: Identify opportunities to reduce technical debt, improve performance, and streamline delivery; contribute to backlog grooming.
About you
  • 4–6 years of professional experience in enterprise software development with the Microsoft stack.
  • Solid hands-on experience with C#, .NET/.NET Core, ASP.NET MVC/Web API, SQL Server, and a modern front-end framework (React/Angular/Blazor).
  • Demonstrated ability to own features end-to-end—from design and implementation to testing, deployment, and support—within a defined architecture.
  • Experience in Agile environments using Azure DevOps (Boards, Repos, Pipelines) or equivalent tools for tracking work, source control, and CI/CD.
  • Exposure to Microsoft Azure (App Service, Functions, Azure SQL, Key Vault, Entra ID), including basic operational troubleshooting.
  • Experience integrating APIs (REST) and handling security concerns (OAuth2/OIDC, tokens, scopes, roles).
  • Familiarity with Infrastructure as Code concepts; ability to read and make minor changes to Bicep/ARM/Terraform with guidance (optional but valuable).

Key Skills:

  • Languages: C#, SQL, JavaScript/TypeScript, HTML, CSS
  • Frameworks/Services: .NET/.NET Core, ASP.NET MVC, Web API, REST; exposure to WCF/SOAP
  • Front-End: React or Angular (components, state management, routing), Blazor (beneficial)
  • Cloud & DevOps: Azure App Service, Azure Functions, Azure SQL, Azure Key Vault; Azure DevOps (Repos, Pipelines), Git
  • Security & Identity: Azure AD (Entra ID), OAuth2, OIDC; understanding of roles/claims, secure secret handling
  • Architecture Patterns: MVC, layered architecture, microservices (conceptual), SOLID, dependency injection
  • Testing & Quality (Good to Have): Unit testing (xUnit/NUnit/MSTest), mocking frameworks; awareness of SAST/DAST, OWASP Top 10; basic performance profiling
Reward & benefits

Explore the rewards and benefits that help you thrive – at every stage of your life and your career.

This includes:

  • Comprehensive life insurance coverage.
  • Premium medical insurance for you and your dependents.
  • Generous annual leave balance.
  • Flexible and hybrid work solutions.
  • Remote work opportunities outside of country.
  • Company gratuity scheme.
  • Discretionary bonus program.
  • Relocation assistance.
  • Employee Wellbeing Program: 24/7 access to specialists in finance, legal matters, family care, personal health, fitness, and nutrition.

Seize every opportunity to sharpen your skills, expand your expertise, and be recognized for the impact you make.

About AtkinsRéalis

We're AtkinsRéalis, a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world's infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world. We're committed to leading our clients across our various end markets to engineer a better future for our planet and its people.

Find out more.

Worker TypeEmployee

Job TypeRegular

At AtkinsRéalis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. We strongly believe that world-class talent makes no distinctions based on gender, ethnic or national origin, sexual identity and orientation, age, religion or disability, but enriches itself through these differences.  

Top Skills

.Net/.Net Core
Angular
Asp.Net Mvc
Azure Ad
Azure Services
C#
Ci/Cd
Oauth2
Oidc
React
SQL Server
Web Api
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The Company
HQ: Montreal, QC
43,531 Employees

What We Do

We are a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world’s infrastructure and energy systems.
Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world.

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