Nilton Costa
Software Engineer
Rio de Janeiro,RJ
Summary
Experienced Backend Software Engineer with 5+ years designing and delivering scalable, high-performance solutions using C#, .NET, Azure, and MongoDB. Successfully reduced time-to-credit from hours to minutes for VIP clients by developing prioritization features at Stone. Skilled in Cloud-Native Microservices with a strong emphasis on DDD and Event-Driven Architecture. Proven ability to improve system reliability, operational efficiency, and observability in distributed platforms.
Overview
5
5
years of professional experience
6
6
years of post-secondary education
Work History
Software Engineer
Stone
São Paulo, Brazil
12.2024 - Current
- I was responsible for the design and development of the distributed backend services for credit risk and pricing orchestration, handling approximately 3 million requests per week with high availability and reliability.
- Designed and built a prioritization feature for VIP clients in the credit scoring and pricing pipelines. Significantly reducing the average time-to-credit for high-priority clients from hours to minutes.
- Architected scalable, resilient, and high-performing distributed systems by advocating for best engineering practices, Domain-Driven Design (DDD), and Event-Driven Architecture (EDA), reducing system failures and improving overall platform reliability.
- Fostered close collaboration with product, data, and operations teams to design and implement robust, cloud-native solutions, ensuring alignment with business objectives.
- Developed a batch analysis scheduling feature using Hangfire jobs, automating off-hours analysis execution and improving operational efficiency in the credit analysis platform.
- Built observability solutions using Datadog + Grafana, reducing Mean Time to Recovery (MTTR) and achieving 99.9% uptime, and analyzed engineering metrics such as p95 latency and apdex to ensure SLA compliance and system stability.
- Built and reviewed technical specifications before feature development to ensure that the best solution would be used to solve the problem.
- Skills: C#, .NET, Azure, Clean Architecture, SOLID, MongoDB, Microservices, Kafka, Docker, Kubernetes, Azure Service Bus, Redis
Software Engineer
Pecege
São Paulo, Brazil
11.2022 - 12.2024
- I was responsible for designing and developing financial management services that reduced manual processing time by 60% for 30+ finance team members.
- Implemented comprehensive testing strategy (xUnit, integration tests), achieving 85% code coverage and reducing production defects by 75%
- Optimized SQL Server queries and introduced Redis caching, reducing response times and database load.
- Created and maintained technical documentation using Swagger and README, accelerating onboarding and system integration.
- Actively contributed to agile teams using Scrum and Kanban, participating in planning, refinement, and code reviews.
- Skills: C#, .NET, Azure, Clean Architecture, SOLID, SQL Server, Docker, Azure Service Bus, Redis.
Software Engineer
Fadami
Rio de Janeiro, Brazil
04.2021 - 11.2022
- Developed features for a highway management system used by major Brazilian concessionaires (CCR, Arteris, EcoRodovias, EixoSP), with high availability and ease of modification, reducing the operators' response time to create and manage accident occurrences and highway VMS signs.
- Led the project’s technical migration from Web Forms to a Web API, enhancing product maintainability and reducing technical debt.
- Implemented backend services using .NET Framework and frontend components with jQuery, supporting business workflows and data processing.
- Maintained and optimized SQL Server databases, improving query performance and data consistency.
- Mentored and trained two junior developers through an 80-hour onboarding program, improving team productivity.
- Skills: C#, .NET, Azure, SQL Server
Education
MBA - Software Engineering
USP
Brazil 07.2023 - 07.2025
BSc - Computer Science
Centro Universitário Carioca
Brazil 07.2018 - 07.2022
Skills
- Languages & Frameworks: C# NET JavaScript TypeScript OOP
- Architecture & Design Patterns: Clean Architecture Microservices Domain-Driven Design (DDD) Event-Driven Architecture (EDA) CQRS SOLID REST API
- Cloud & Infrastructure: Azure Docker Kubernetes CI/CD Hangfire
- Messaging & Streaming: Azure Service Bus Kafka
- Databases & Caches: SQL Server MongoDB Redis
- Testing & Quality: Unit Testing xUnit Integration Testing
- Libraries & Tools: MediatR Entity Framework Git Swagger
- Methodologies: Scrum Kanban
Languages
English: Full professional proficiency
Portuguese: Native
Work Availability
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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Timeline
Software Engineer
Stone
12.2024 - Current
MBA - Software Engineering
USP
07.2023 - 07.2025
Software Engineer
Pecege
11.2022 - 12.2024
Software Engineer
Fadami
04.2021 - 11.2022
BSc - Computer Science
Centro Universitário Carioca
07.2018 - 07.2022