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Jessé Junior

@jessjunior

Senior Software Engineer at Crane Worldwide Logistics, modernizing an F#/.NET payment platform and building AI-assisted testing tools.

Brazil

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At Crane Worldwide Logistics, I helped rebuild a legacy vendor-payment platform in F#/.NET while the old and new versions continued using the same Oracle database. I built CQRS workflows for supplier payments and disputes, and internal MCP servers that enabled controlled, AI-assisted investigation.

At Infragistics, I built the RAG pipeline behind Slingshot’s natural-language analytics feature, connecting conversational questions to project data and dashboard charts. I also designed gRPC contracts across a CQRS-based system and implemented a transactional outbox for reliable event publication.

At EPAM Systems, I was technical lead for four developers adding capabilities to Pearson Assessments. I designed and built an assessment-generation RAG workflow, integrated a personalization service with the existing monolith, and introduced React micro-frontends; the assessment workflow reduced authoring time by 4x.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Crane Worldwide Logistics

Jan 2025 - Aug 2026 (1 year 7 months)

Modernized a legacy vendor-payment platform in F#/.NET, building CQRS-based workflows and internal MCP servers. Designed an AI-assisted build-time IL instrumentation pipeline and a test-first BDD framework.

.NET CQRS HTMX Kafka Oracle MCP Mono.Cecil Playwright BDD OpenTelemetry

Senior Software Engineer

Infragistics

Jan 2024 - Jan 2025 (1 year)

Worked on Slingshot, a collaborative project-management product, building a RAG pipeline for natural-language analytics and designing gRPC contracts across a CQRS-based system of 26 services.

RAG Semantic Kernel Microsoft Bot Framework gRPC CQRS WebSockets PostgreSQL Azure Kubernetes Runtime Memory Profiling

Lead Software Engineer

EPAM Systems (Pearson Assessments)

Jan 2022 - Jan 2025 (3 years)

Led a team of four developers adding capabilities to a .NET Framework assessment platform. Built a RAG workflow for assessment generation, introduced React micro-frontends, and implemented event-sourced frontend state.

.NET Framework RAG Semantic Kernel React Redux Event Sourcing QTI Span ArrayPool Application Insights

Senior Software Engineer / Team Lead

SERGET

Jan 2021 - Jan 2022 (1 year)

Led four developers stabilizing a legacy Web Forms system for processing traffic violations. Owned the data-access layer, improved batch processing, and introduced stateless, idempotent processing with dead-letter queues.

Entity Framework SQL Server RabbitMQ Idempotency Dead Letter Queues Web Forms

Project: Next Tecnologia | Small-Business Consulting Platform

Next Tecnologia

Jan 2020 - Jan 2021 (1 year)

Designed and launched a consulting platform in six months, adopting Blazor early. Built a lead pipeline that increased qualified lead generation 20x and automated follow-up, reducing acquisition cost and time to billing by 60%.

Blazor Lead Generation VoIP Automation

Software Engineer to Senior Engineer / Architect

4D Soluções em Tecnologia da Informação

Jan 2011 - Jan 2021 (10 years)

Started with billing-analysis spreadsheets and later led developers across six areas. Automated billing analysis with VBA and ASP.NET, built Django APIs, and deployed ML models via ONNX in .NET applications.

VBA ASP.NET Python Pandas NumPy scikit learn ML.NET Onnx Django BPMN SQL

Education

Degrees, certifications, and relevant coursework

Full Cycle

MBA, Software Engineering with Artificial Intelligence

MBA in Software Engineering with Artificial Intelligence, in progress. Topics include AI-enabled software architecture, LLMs, RAG, agents, evaluation and security, distributed systems and observability.