Davi G.

AI Engineer (LLMs · RAG · NLP) | Staff Software Engineer | Python, SQL, AWS | Backend · Platform · Data Systems

Brazil

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Updated 9 months ago

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34+

Years Experience

Roles

102

Skills

Education

About

Staff Software Engineer with 21+ years in software development, focused on building scalable, resilient, and maintainable backend systems. I combine hands-on engineering with platform and data infrastructure leadership. AI Engineering Track: Since 2017, I’ve developed intelligent systems using NLP and real-time classification. Over the past 3 years, I’ve expanded this work with LLMs and Retrieval-Augmented Generation (RAG), delivering AI-enhanced tools for decision-making, automation, and structured knowledge retrieval using models such as GPT-4, Mistral, DeepSeek-R1, MiniLM, and others. Core Expertise: • Programming & Architecture: Python (17+ yrs), SQL (21+ yrs), OOP, DDD, REST APIs, System Design • Frameworks & Messaging: FastAPI, Flask, Django/DRF, Celery, RabbitMQ, Redis, Pub/Sub • Cloud & DevOps: AWS (Lambda, EC2, S3, CloudWatch, RDS, Redshift, SQS, SNS), Kubernetes (EKS), Docker, Terraform, GitHub Actions, Helm • Databases & Search: PostgreSQL, MySQL, MongoDB, Elasticsearch • Data Engineering & Analytics: Polars, ETL Pipelines, Data Modeling, Jupyter Notebooks, Looker Studio • Frontend (when needed): React, HTML5, REST integration, Fullstack delivery • Leadership: Staff-level ownership, mentoring, cross-team alignment, Agile execution Real-world Impact: • Led backend modernization, observability, real-time data, and reliability across international teams • Built a smart NLP-based support system that automated 35% of interactions and hybridized another 63%, enabling 5× growth without adding support headcount • Delivered a decision-assist platform using LLMs and RAG to summarize contracts and financial indicators, reducing credit risk analysis time by 50% Engineering Mindset: What Sets Me Apart • Own backend and platform architecture end to end • Think in systems: sustainable, clear, and maintainable by default • Design for failure: edge cases, fallback paths, and observability are priorities • Deliver fast while continuously hardening weak spots • Use metrics for insight, not just alerts • Test end-to-end: traceable, reproducible, intentional • Apply LLMs when useful, and structured or classical NLP when more efficient • Optimize for compute, memory, tokens, and team time • Bridge backend, infra, data, and product layers • Write clean, scoped, understandable code How I Work: Whether acting as a Senior or Staff Engineer in AI, Backend, Platform, Data, or Fullstack roles, I bring technical depth, strategic clarity, and a bias for simplicity. Let’s build systems that scale, evolve, and empower people.

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Experience (18 roles)

Senior Backend & Platform Engineer – Platform Resilience Team

Current

Payfare Inc. · Indirect Contract

Nov 2023 - Present · 1 yr 8 mos·Toronto, Ontario, Canada · Remote

Hired as a Backend Engineer, operated in a Staff-level capacity driving initiatives across backend, platform, observability, and data reliability. Key achievements: • Upgraded 20+ services to latest Python versions and Docker base images, ensuring dependency compatibility and full test coverage (u...

Consulting Project – Data Engineer & Analyst for Agroindustrial Insights

Governo do Estado do Paraná · Freelance

Jul 2022 - Oct 2022 · 4 mos·Greater Curitiba · Hybrid

Led data engineering and analytics efforts in an award-winning public-private initiative to position Londrina as a regional hub for agroindustrial innovation in Northern Paraná. Key achievements: • Processed over 40 GB of multisource tabular data from 15+ public and private datasets using Python, ...

Senior Staff AI Engineer & Backend Engineer — Financial Systems, Automations & RAG

Blips Ativos · Full-time

Jun 2022 - Nov 2023 · 1 yr 6 mos·Uberlândia, Minas Gerais, Brazil · Remote

Led the architecture and rollout of a data-driven financial platform during a period of hypergrowth. Designed scalable AI-enabled systems that automated funding pipelines, enhanced capital efficiency, and supported multi-squad engineering efforts. Key Achievements: • Receivables & Funding Automati...

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Education (1)

FAE Centro Universitário

Jan 2023 - Dec 2027

Grade: Computer Science · Business · Statistics · Data-Driven Innovation Focus areas: Computer Science · Business · Statistics · Data-Driven Innovation Description: This degree bridges technology and business, training professionals in data science with a strategic foundation in business, statistics, and systems thinking. FAE is a reference institution in the business field in Southern Brazil. As an experienced developer moving toward senior leadership, I chose this program to deepen my knowledge in data analysis, business intelligence, and sustainable innovation — connecting technical execution to real business impact. Relevant Skills: Python, R, SQL, PostgreSQL, Business Intelligence, Data Visualization, Agile Project Management, Data Modeling, Statistics, Cloud Computing Skills: Artificial Intelligence (AI) · Statistics · PostgreSQL · Data Analysis · Data Structures · R (Programming Language) · Problem Solving · Software Deployment · SQL · Software Project Management · Docker · NumPy · Algorithms · Data Processing · Python · Data Analytics · Containerization · Computer Science · API Development · Pandas (Software) · Requirements Analysis · Data Modeling · Data Pipelines · Leadership · Rust (Programming Language) · Python (Programming Language)

Skills (102)

MySQLPythonFastAPICloudElasticsearchRedisKubernetesDockerElastic Load BalancingSQLLarge Language Models (LLM)AWS Command Line Interface (CLI)DockerMatplotlibProblem SolvingSoftware ArchitectureArtificial Intelligence (AI)LeadershipSoftware DeploymentPython (Programming Language)ContainerizationAmazon Web Services (AWS)Software Project ManagementRetrieval-Augmented Generation (RAG)Big Data AnalyticsPythonPandas (Software)Amazon Relational Database Service (RDS)AWSGitHubMySQLDomain-Driven DesignGitPandasMongoDBHTML5LambdaRabbitMQLinuxGoogle CloudAdobe IllustratorJavaJavaScriptDjangoCSS3SQSRDSTerraformBigQueryCloudWatchPolarsscikit-learnAmazon RedshiftSNSCloudFrontMatplotlibEC2FlaskVue.jsApache KafkagRPCPrometheusOpenTelemetryEKSPostgreSQLLookerWordPressPHPMediumS3PythonMySQLPostgreSQLCloudDockerPandasRustCombineFastAPIFlaskRabbitMQRedisCloudAWSLambdaEC2CloudWatchRDSSQSSNSKubernetesEKSTerraformGitHubHelmPostgreSQLMongoDBElasticsearchPolarsLookerReactHTML5

Certifications (4)▼

M320: MongoDB Data Modeling

MongoDB

NearSure Speaking Test Report - C1+ in CEFR score (or 8/9 in IELTS)

Nearsure

Voxy Proficiency Achievement Certificate - High Intermediate

Voxy

Essential Linear Algebra for Data Science

University of Colorado Boulder

Languages (5)▼

English(Full professional proficiency)German(Elementary proficiency)Portuguese(Native or bilingual proficiency)Italian(Elementary proficiency)Spanish(Elementary proficiency)

Volunteer Experience (1)▼

Volunteer Musician & Contemplative Service Facilitator

The Episcopal Church

Jan 2014 - Dec 2018 · 5 yrs

The Episcopal Church Welcomes You

Honors & Awards (4)▼

Honorable Mention – Hackathon 2023: “Responsive Home”

Issued by FAE Centro Universitário · Jun 2023

Associated with FAE Centro Universitário Description: Received Honorable Mention for outstanding innovation and performance during the Hackathon 2023: Computational Programming Using Python. The awarded project, “Responsive Home”, integrated IoT, Data Science, and Human Chronobiology to support neurodivergent individuals—including those with Giftedness, Autism Spectrum Disorder (ASD-1), and ADHD. While officially credited as a 12-hour event, the project involved over 60 hours of research, prototyping, and collaboration. The solution was recognized for its inclusive design, chronotype alignment, and potential to enhance healthy routines through adaptive smart environments. Keywords: Hackathon · Python · IoT · Data Science · Neurodivergence · Human Chronobiology · Inclusive Design · Assistive Technology Honorable Mention Certificate - “Responsive Home” Project

1st Place – Insight Project for Business

Issued by FAE Centro Universitário · May 2023

Description: Awarded 1st place for the successful execution and delivery of the “Insight Project for Business”, a 90-hour initiative focused on transforming public and economic data into actionable business insights. The recognition reflected excellence across all dimensions of the project: from data engineering and ETL pipelines to advanced analysis and interactive dashboards. The project showcased Londrina’s potential as a regional hub for agroindustrial innovation and was praised for its technical quality, clarity of storytelling, and real-world applicability. Keywords: Data Science · Business Intelligence · ETL Pipelines · Polars · Looker Studio · Public Data · Insight-Driven Strategy · Visualization · Award-Winning Project 1st Place Certificate - Insight Project for Business

Best Student in Data Science Class - 2024

Issued by FAE Centro Universitário · Jul 2024

Associated with FAE Centro Universitário Awarded for exceptional academic performance as the top student in the Data Science class of 2024. This recognition highlights consistent excellence in analytical thinking, hands-on project execution, and strong interdisciplinary skills across statistics, programming, and business applications. Award - Best Student Certificate

Best Student of the Class – 2023

Issued by FAE Centro Universitário · May 2023

Associated with FAE Centro Universitário Description: Awarded for exceptional academic performance and recognition as the top student in the 2023 Data Science class. This distinction reflects consistent excellence across core topics including programming in Python, statistics, data analysis, and practical business applications. Recognized for critical thinking, technical leadership, and a proactive learning mindset. Keywords: Data Science · Academic Excellence · Top Student · Python · Analytics · Statistics · Performance Award Best Student Certificate