Available to hire
Hi, I’m Jeferson Leite Borges, a seasoned software engineer and designer with over 20 years of experience delivering innovative software solutions and creative design.
I’ve led teams, improved code quality, and driven business growth across industries, from streaming and entertainment to financial services. I’m passionate about building scalable systems, mentoring engineers, and aligning technology with business goals.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Advanced
Portuguese
Fluent
Work Experience
Lead Software Engineer at Ticketmaster (via EPAM Systems)
April 1, 2024 - PresentCreated a unified web component for errors, captchas, and user-facing failure states used across core flows. Cut latency on critical user paths by ~10% by designing portable edge functions that run across multiple vendors (Fastly, Cloudflare...).
Lead Software Engineer at S&P Global (via EPAM Systems)
January 1, 2022 - April 30, 2024Expanded E2E test coverage and cut QA turnaround time by enabling non-technical staff to write Cucumber scenarios in a guided testing framework. Modified component to allow more than 10k rows to be displayed on low-end computers. Replaced some ORM queries with optimized hand-written SQL.
Resource Manager at EPAM Systems
January 1, 2022 - PresentImproved delivery predictability across multiple teams by around 10% by aligning staffing, priorities, and cross-team dependencies.
Lead Software Engineer at IHS Markit
July 1, 2021 - December 31, 2021Delivered a new React-based finance platform to production, implementing critical features and unblocking the team on key technical decisions. Cut production bug count per release by ~20% and increased release cadence by tightening code review standards and clarifying scope with stakeholders.
Senior Software Engineer at IHS Markit
June 1, 2021 - June 30, 2022Raised frontend test coverage from roughly 10% to over 60% by introducing React Testing Library and embedding tests into the development workflow. Reduced critical regressions in production by ~30% by implementing Playwright + Cucumber end-to-end suites and integrating them into CI.
Lead Software Engineer at Fetchly Labs
January 1, 2021 - April 1, 2021Shipped multiple cross-platform React Native apps to production in a few months by applying XP practices (pair programming, TDD...). Cut integration time for new features by designing stable Rails APIs with clear contracts.
Team Lead at Tentáculo Digital
October 1, 2020 - January 31, 2021Delivered multiple concurrent client projects on time by coordinating a cross-functional team, managing scope, and enforcing Agile rituals. Reduced onboarding time by ~40% by streamlining recruitment pipelines, standardizing technical interviews, and improving handover to project teams.
Java Software Engineer at Tentáculo Digital
May 1, 2020 - January 31, 2021Reduced REST API response times by ~20% under peak load by building Quarkus-based services and tuning JVM and database access. Strengthened backend security posture by resolving high-risk findings from security reviews through improved authentication.
JavaScript Engineer at Netflix EstaçãoN
December 1, 2019 - January 31, 2021Cut deployment time and operational overhead by ~20% by designing and launching a serverless Node.js backend on AWS for Netflix EstaçãoN. Improved end-to-end reliability of the product by reducing issues through aligning React frontend contracts with Node.js APIs and enforcing MongoDB schemas.
React Developer at Netflix EstaçãoN
November 1, 2019 - September 30, 2020Increased user engagement on key pages by ~20% by building highly responsive React SPAs with reusable component patterns. Accelerated delivery of new backend powered features by ~20% by implementing Node.js serverless functions for APIs and background automation.
Web Developer at Beto Carrero World
April 1, 2019 - October 31, 2019Increased campaign click-through rates by roughly 5% by crafting performance optimized HTML5, CSS and JS landing pages tailored to promotion. Boosted email open and click rates by ~3% by designing responsive MJML templates and unifying campaign graphics, icons and brand visuals across channels.
Web Developer and Designer at DWV Interativa
September 1, 2018 - February 28, 2019Increased lead conversion on client campaigns by ~25% by designing and developing custom landing pages aligned with each brand.
Education
Software Engineering at Unicesumar
January 1, 2020 - January 1, 2020MBA in Frontend Development at IGTI
January 1, 2019 - December 31, 2020Bachelor of Industrial Design at Universidade do Vale do Itajaí
January 1, 2008 - December 31, 2013Qualifications
Industry Experience
Software & Internet, Media & Entertainment, Financial Services, Professional Services
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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