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Daniel Sousa

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Rio de Janeiro, State of Rio de Janeiro, Brazil
Contact Daniel regarding: 
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Full-time jobs
Starting at USD40/hour
Flexible work
Starting at USD40/hour
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Timeline

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Résumé

Jobs verified_user 0% verified
  • DEEL
    Senior Full-Stack Software Engineer
    DEEL
    Dec 2023 - Current (2 years 11 months)
    • Architected and built a cross-border fintech payout platform backend on ASP.NET Core with REST and gRPC endpoints serving 40k requests per second, using idempotent state machines and the outbox pattern to ensure multi-currency disbursements remained reliable under transient failures and retries.
    • Redesigned a blocking contractor onboarding flow into an event-driven system using Kafka and MassTransit, reducing completion time from 9 minutes to under 2 minutes while orchestrating third-party KYC and KYB integrations with clear separation of concerns.
    • Debugged and resolved a SEV-2 production issue stemming from stale event listeners in a WebS
  • Clearco
    Full-Stack Software Engineer
    Clearco
    Sep 2021 - Nov 2023 (2 years 3 months)
    • Owned the multi-tenant appointment-scheduling platform backend on ASP.NET Core with EF Core and PostgreSQL, implementing row locks and Redis slot reservations to eliminate double-booking race conditions under concurrent load.
    • Built and shipped 30 plus healthcare integrations covering HL7 and FHIR specifications, exposing each adapter as a LaunchDarkly-flagged NuGet package with granular per-tenant rollout control and comprehensive error handling.
    • Implemented field-level patient data masking on the UI layer and AWS KMS envelope encryption inside EF Core value converters, ensuring separate encryption keys per tenant across all patient-facin
  • Kavak
    Junior Full-Stack Software Engineer
    Kavak
    Jul 2019 - Aug 2021 (2 years 2 months)
    • Implemented React UI components, shared widget libraries, and corresponding ASP.NET Core endpoints for catalog and merchandising features working from senior engineer specifications.
    • Increased test coverage from 45 percent to 85 percent on two recommendation widgets and their backend APIs using Jest, React Testing Library, xUnit, and WebApplicationFactory under mentorship.
    • Debugged and fixed a Redis cache-stampede issue causing intermittent 5xx errors during nightly catalog re-imports by implementing a single-flight cache wrapper pattern.
    • Migrated CI pipelines for two services from Jenkins to GitLab CI, documenting the rollout patt
  • Globo
    Full-Stack Software Engineer
    Globo
    Jul 2017 - Jun 2019 (2 years)
    • Developed backend APIs on ASP.NET Core with Entity Framework Core data access layer handling complex course-student-assignment relationships serving 25k active users in an education technology domain.
    • Built React frontend applications for course management and student assessment workflows, implementing server-side rendering and incremental static generation for optimal load performance.
    • Integrated comprehensive logging and monitoring using Serilog and Application Insights, enabling rapid incident diagnosis and reducing mean-time-to-resolution for production issues by 40 percent.
    • Established code review standards and mentored junior
Education verified_user 0% verified
  • Federal University of Rio de Janeiro
    Bachelor's Degree in Computer Science
    Federal University of Rio de Janeiro
    Mar 2013 - Dec 2017 (4 years 10 months)