Job Title: Senior Backend Engineer – SQL and C#

Company Name: Skillable

Job Url: https://ats.rippling.com/en-GB/skillable-careers/jobs/65691707-c28a-488c-915e-d5610ed92726?jobSite=LinkedIn&jr_id=697cc878137a05102565c06c

Job Description: The Senior Backend Engineer – SQL and C# is responsible for designing, optimizing, and maintaining Azure SQL database environments with a strong emphasis on supporting development teams and modern DevOps practices. This role partners closely with engineering teams and architects to ensure database design, deployment, and performance are fully aligned with application development and agile delivery. 



Responsibilities

Design and model relational database solutions using SQL technologies (e.g., Azure SQL), including schema design, normalization, and optimization for performance and scalability. 
Deep involvement with engineering team in the Data Access Layer using EF CodeFirst modeling, mappings, and LINQ queries to ensure the schema and C# domain model are coherent, intentional, optimized, maintain integrity, and follow best practices 
Establish data unit test patterns and framework for LINQ/query expressions and other data access patterns 
Plan, script, review, and safely roll out EF migrations (including zero downtime/online migration patterns and rollback plans). 
Design, develop and debug Data Access Layer application code in C# 
Analyze and optimize SQL query performance to ensure efficient data retrieval and application responsiveness, applying Entity Framework techniques such as query translation analysis, LINQ optimization, and proper use of eager vs. lazy loading. 
Optimize performance of application-generated queries on Azure SQL Database through techniques such as index tuning and query plan analysis to ensure fast and efficient transactional operations. 
Operate as a subject matter expert on data access and ORM integration (i.e Entity Framework), including providing guidance on best practices for database access patterns. 
Automate database deployment and maintenance tasks using CI/CD pipelines, infrastructure-as-code, and scripting tools (e.g., PowerShell, Azure CLI). 
Work with DevOps to manage and synchronize database changes across development, QA, staging, and production environments, ensuring consistency and reliability. 
Oversee and manage Azure cloud-hosted databases (Azure SQL), including configuration, monitoring, performance tuning, and cost optimization. 
Integrate and maintain monitoring and alerting solutions (e.g., Datadog, Azure Monitor) for proactive database health and performance management. 
Explore and recommend new technologies, patterns, and methods to accomplish items on the technical and product roadmaps 
Collaborate with Architects to define, implement, and maintain high availability and disaster recovery (HADR) solutions for Azure cloud and hybrid database environments. 
Participate in agile ceremonies (sprint planning, code reviews, etc.) to embed database best practices in the SDLC. 
Participate in on-call rotations and support incident response as needed. 
Support and promote the company values through positive interactions with both internal and external stakeholders on a regular basis 
Other strategic business initiatives or special cross-functional project involvement as required