Senior .NET Developer – C#, SQL Server, AppSec

Job not on LinkedIn

🔥 6 hours ago

🇧🇷 Brazil – Remote

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 10%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Cyber Tools and Solutions

WebsiteLinkedInAll Job Openings

11 - 50 employees

💼 Consulting

📣 Marketing

🔒 Cybersecurity

Consulting • Marketing • Cybersecurity

Cyber Tools and Solutions is a consulting company specializing in IT, located in Barueri, SP, Brazil. With extensive experience and cutting-edge technology, we provide innovative solutions to help businesses thrive in the digital world. We offer personalized strategies and comprehensive services to optimize IT infrastructure, enhance cybersecurity, and streamline operations.

📋 Description

• Develop features in C#/.NET • Fix bugs and improve code structures • Optimize SQL Server routines • Work with legacy applications without compromising functional behavior or financial processing • Identify and remediate vulnerabilities • Review authentication and authorization mechanisms • Eliminate insecure SQL queries and protect sensitive data • Implement controls against unauthorized access and the manipulation of operations • Conduct code reviews • Introduce security checks into pipelines • Write regression tests • Integrate static analysis and vulnerable dependency scanning tools • Ensure transactional integrity, traceability, access segregation, protection of financial positions and transactions, operation idempotency, and technical evidence for audits

🎯 Requirements

• C# / .NET: .NET Framework, modern .NET, ASP.NET Core, Web API, MVC • SQL Server: T-SQL, stored procedures, transactions, indexes, tuning, permissions • Secure Coding: OWASP Top 10, SQL Injection, XSS, CSRF, SSRF, IDOR/BOLA • API Security: OAuth 2.0, OpenID Connect, JWT, access validation and authentication • AppSec: Vulnerability analysis, SAST, DAST, SCA, code review • Legacy Systems: IIS, Windows Server, integrated authentication, application integration • Availability to work as an independent contractor (PJ) • Full-time availability

🏖️ Benefits

• Life insurance • iFood Livre • TotalPass