Senior Full-Stack Software Engineer (.NET)

Location: São Paulo

Department: Financial Services BU

Why Join Exadel

We’re an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks.

From AI platforms to digital transformation, we partner with enterprise leaders to build what’s next.

What powers it all? Our people are ambitious, collaborative, and constantly evolving.

What You’ll Do

• Design, develop, enhance, and maintain corporate applications using the Microsoft technology stack, ensuring high standards of quality, performance, security, and scalability
• Act primarily on the backend, supporting full stack activities when required
• Develop and maintain REST APIs, services, and system integrations
• Produce technical documentation, including workflows, data structures, and architectural decisions
• Analyze business and technical requirements, proposing solutions aligned with the financial industry context
• Participate in code reviews, ensuring adherence to development standards and best practices
• Identify and resolve performance bottlenecks in applications and databases
• Collaborate with multidisciplinary teams, participating in planning sessions, technical discussions, and agile ceremonies
• Work in a hands-on manner, with strong ownership and delivery focus

What You Bring

• Strong experience with C# and .NET / .NET Core
• Experience building and maintaining RESTful APIs and services
• Knowledge of enterprise application architecture, microservices, and distributed systems
• Experience with Git and version control best practices
• Solid understanding of Clean Code, SOLID principles, Design Patterns, and software engineering best practices
• Strong experience with SQL Server
• Experience with relational data modeling
• Development and maintenance of stored procedures
• Query optimization and performance tuning
• Experience handling large data volumes
• Working knowledge of HTML, CSS, and JavaScript for Full Stack support
• Experience with system integrations and service consumption
• Experience working in enterprise and mission-critical environments
• Previous experience in the financial services industry
• Experience with banking systems, financial platforms, or capital markets environments
• Understanding of financial sector operations such as financial products and processes, trading, settlement, custody, or related operations, and integration within the financial ecosystem

Nice to Have

• Experience in large-scale Microsoft-based enterprise environments
• Experience in high-availability or high-transaction systems
• English for communication with international teams

Legal & Hiring Information

• Exadel is proud to be an Equal Opportunity Employer committed to inclusion across minority, gender identity, sexual orientation, disability, age, and more
• Reasonable accommodations are available to enable individuals with disabilities to perform essential functions
• Please note: this job description is not exhaustive. Duties and responsibilities may evolve based on business needs

Your Benefits at Exadel 

Exadel benefits vary by location and contract type. Your recruiter will fill you in on the details.

• International projects
• In-office, hybrid, or remote flexibility
• Medical healthcare
• Recognition program
• Ongoing learning & reimbursement 
• Well-being program
• Team events & local benefits 
• Sports compensation 
• Referral bonuses 
• Top-tier equipment provision

Exadel Culture

We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.