Senior Software Engineer (C# / .NET / Microsoft SQL Server)

Velozient; Brasil; Remote; BRL 300,000 - 540,000; Full time

Benefits offered by this job

Remote work (LATAM)

Job summary

Casado is seeking a Senior Full-Stack Software Engineer (C# / .NET / Microsoft SQL Server) for a remote LATAM role. You will be hands-on on a product engineering team, focusing on backend systems, APIs, reporting, and data-intensive services for a U.S. client.

The position requires 5+ years of experience with C#, .NET, and SQL Server, strong English communication, and ownership of features from design through production. HTML/CSS/JS familiarity is a plus; remote work from LATAM is supported.

Qualifications

• 5+ years of professional software development experience.
• 5+ years of experience with C# and modern .NET.
• Experience with Microsoft SQL Server and T-SQL.

Responsibilities

• Design, build, test, deploy, and support software using C#, .NET, and SQL Server.
• Build and maintain APIs, backend services, and data-intensive features.
• Work with large SQL Server databases and optimize queries and indexing.
• Participate in production troubleshooting and deployments.
• Collaborate across teams to translate requirements into working software.

Skills

C#

ASP.NET

SQL Server

T-SQL

API design

Frontend basics

Problem solving

English communication

Education

Bachelor’s degree in Computer Science or equivalent

Tools

GitHub

Git

Job description

Senior Full-Stack Software Engineer (C# / .NET / Microsoft SQL Server) | Remote | LATAM

We are looking for a full-time, remote Senior Software Engineer (C# / .NET / Microsoft SQL Server) with 5+ years of software development experience using C#, .NET, and Microsoft SQL Server to join our U.S. client. In this role, you will be a hands-on contributor on a product engineering team responsible for reporting, APIs, data-intensive services, and customer-facing applications. This is primarily a backend role with a strong data emphasis, and you will be expected to take ownership of what you build from problem definition through production. Founded in 2003, our client transforms the traditional restaurant point-of-sale (POS) terminal into an integrated 360-degree operational management system. Their solution increases brand loyalty through improved customer experiences, optimizes operations resulting in lower costs, and increases sales volumes through comprehensive analytics and employee performance insights. Over 7,000 locations use their technology today processing $5 Billion in daily sales.

Responsibilities

Design, build, test, deploy, and support production software using C#, .NET, and Microsoft SQL ServerBuild and maintain APIs, backend services, reporting functionality, and data-intensive application featuresWork hands-on with large SQL Server databases containing hundreds of millions of rows and potentially terabytes of dataWrite and optimize complex T-SQL, stored procedures, queries, and data-access patternsDesign practical relational data models that balance maintainability, performance, and delivery needsDiagnose application and database performance problems using execution plans, indexing strategies, query analysis, and production telemetryWork effectively with clustered and nonclustered indexes, large-table strategies, partitioning, locking, blocking, and concurrencyInvestigate production issues, identify root causes, and implement fixesOwn software beyond implementation, including deployment, monitoring, troubleshooting, and production supportMake pragmatic engineering decisions that balance quality, technical risk, delivery speed, and customer impactWork in existing codebases and improve them incrementally rather than requiring large rewritesTranslate business needs and imperfect requirements into working softwareMake frontend changes when necessary, including HTML, CSS, JavaScript, and modern web frameworksReview code and provide clear, actionable feedbackCommunicate progress, blockers, technical decisions, and tradeoffs clearly with engineers, product managers, and other stakeholders

Required Experience

Excellent English communication skills5+ years of professional software development experience5+ years of experience with C# and modern .NET2+ years of experience with HTML, CSS, JavaScript, and modern web frameworksExpert level T-SQL skillsProven hands-on experience working with production Microsoft SQL Server databasesExperience designing relational data models and making practical schema design decisionsExperience working with large datasets and high-volume database workloadsStrong understanding of SQL Server performance fundamentals, including clustered and non-clustered indexes, query execution plans, query and stored procedure optimization, large-table design and partitioning concepts, and transactions, locking, blocking, and concurrencyExperience building and consuming web APIsAbility to independently investigate unfamiliar or ambiguous technical problemsStrong debugging and root-cause-analysis skillsDemonstrated ability to deliver working software in iterative incrementsComfortable taking ownership of code in production and participating directly in troubleshooting when issues occurComfortable working across application boundaries when needed rather than limiting yourself to a narrow specialtyExperience with Git and GitHub or similar source-control workflowsProven delivery experience in a vibrant, dynamic startup environmentA collaborative approach, a can-do attitude, and a relentless pursuit to attain goals and solve problemsTrustworthy, team-oriented, and transparent

Desired Experience

University degree or relevant industry experienceKnowledge in Microsoft AzureExperience with Docker and containerized applicationsReporting, analytics, or data-intensive application developmentObservability, application monitoring, and production troubleshootingCI/CD and automated deployment pipelinesExperience with SaaS, e-commerce, restaurant technology, or point-of-sale systems

Additional Information

Knowing your ideas are heard and matter think big!You get to own your job and be recognized for your contributionsWork with smart and creative peopleMaking mistakes is human. Let's learn from them. Be transparent!We recognize you as an individual no presumptions or judgment. Be the extraordinary you!15 days Paid Time Off (PTO), 1 floating day, 3 sick days, and designated national holidaysStart: ASAP