Matheus Julidori - Backend Software Engineer & Software Architect based in Brazil

backend
software engineer

matheus julidori
👋

Backend software engineer specializing in API architecture, microservices, and event-driven systems. I design and implement scalable backend solutions that prioritize performance, reliability, and maintainability, focusing on writing codes that are clean_

about me

I'm a backend software engineer with extensive experience in API architecture, microservices, and event-driven systems. I specialize in building scalable backend solutions using NestJS, Node.js, TypeScript, PostgreSQL, Redis, and AWS.

Matheus Julidori is a backend software engineer specializing in API architecture, microservices, and event-driven systems. Expert in NestJS, Node.js, TypeScript, PostgreSQL, Redis, and AWS. Achieved 12x API performance improvements and 90x equipment availability increases.
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Projects

Dialvox
Dialvox project preview - Backend architecture and API development

Dialvox is a platform for automating voice calls using text-to-speech (TTS) and DTMF capture. Businesses can register, schedule outbound calls, and send messages that are converted into speech using Amazon Polly. Calls are placed through Asterisk, and recipients can respond by pressing keypad numbers. I developed backend services in Express and PostgreSQL to manage user flows, call queues, and responses, and built the frontend in Next.js with TailwindCSS. The platform is commonly used to collect metrics like NPS via automated voice surveys.

PicoDev
PicoDev project preview - Backend architecture and API development

PicoDev is a MicroSaaS development studio building internal tools and productivity apps for engineering teams. I led the architecture and development of multiple fullstack applications using Next.js, Express, TypeScript, and PostgreSQL. I also managed cloud infrastructure using AWS, Docker, and GitHub Actions, ensuring scalable deployments and maintainable pipelines. My role covered backend systems, frontend components, and DevOps automation.

UniJobs
UniJobs project preview - Backend architecture and API development

UniJobs is a white-label job-matching platform developed as an undergraduate thesis to bridge the academic world and job market. Built with NestJS, PostgreSQL, and Vite, it features secure authentication, role-based access, and end-to-end testing. I collaborated with a team of students from Inatel and received mentorship throughout the process.

my skills

01

Back-End Development

I design and implement robust backend systems and RESTful APIs using Node.js, NestJS, and Express. I apply architectural patterns like CQRS, Domain-Driven Design (DDD), Event-Driven Architecture, and Clean Architecture principles to build scalable, maintainable systems.

Node.js /  NestJS /  Express /  TypeScript /  CQRS /  DDD /  Event-Driven /  Clean Architecture /  SOLID
02

Cloud & Infrastructure

I architect and deploy cloud-based services using AWS and GCP. I containerize applications with Docker and orchestrate with Kubernetes. I use infrastructure-as-code tools like Pulumi to manage cloud resources and configure NGINX for reverse proxying, load balancing, and SSL termination.

AWS /  GCP /  Docker /  Kubernetes /  Pulumi /  NGINX
03

Databases & Caching

I model efficient schemas and optimize queries for relational and NoSQL databases including PostgreSQL, MySQL, MongoDB, Cassandra, and MariaDB. I use Redis for caching, session management, and low-latency real-time data delivery.

PostgreSQL /  MySQL /  MongoDB /  Cassandra /  MariaDB /  Redis
04

Messaging & Queues

I integrate and manage distributed message brokers for async communication and background job handling. I use BullMQ with Redis, and work with RabbitMQ, Kafka, and SQS in event-driven microservice ecosystems.

RabbitMQ /  Kafka /  Amazon SQS /  BullMQ
05

DevOps & CI/CD

I design CI/CD workflows using GitHub Actions to automate testing, linting, builds, and deployments. I containerize applications with Docker and manage infrastructure with Kubernetes and Pulumi for scalable, reliable deployments.

Docker /  GitHub Actions /  Kubernetes /  Pulumi
06

Front-End Development

I build modern, accessible, and responsive UIs using TypeScript and React. I apply component-driven design and optimize styling with TailwindCSS.

TypeScript /  React /  TailwindCSS /  JavaScript /  HTML /  CSS
07

Languages

I'm fluent in English and Portuguese, and I communicate effectively in German and Spanish. This multilingual ability supports international collaboration.

English /  Portuguese /  German /  Spanish
08

Soft Skills

I bring strong leadership, clear communication, and business-oriented thinking to every project. I mentor teams, facilitate collaboration, and drive execution with initiative.

Leadership /  Communication /  Business Vision /  Proactivity
my
experiences

Software Engineer

Babz LLC - Oct 2025 - Present

Enhanced API performance by 12x using query optimization and AWS media migration. Reduced infrastructure spending by 20% by redesigning cloud architecture with Pulumi. Migrated backend from Django to NestJS, improving scalability and maintainability. Architected backend platform and cloud infrastructure for a social-media video chat startup.

Software Engineer

Inatel xGMobile - CRR - Feb 2025 - Present

Improved deployment efficiency by 87% using containerized platform and automated CI/CD workflows with Docker. Increased equipment availability by 90x by implementing remote per-device access control using NestJS and granular permission models. Reduced scheduling bottlenecks by 95% using a digitalized reservation platform for 6G research equipment.

Co-Founder & CTO

OfferIn - Nov 2024 - Apr 2025

Minimized future refactoring requirements by 50% by architecting modular microservices design prepared for horizontal scaling. Accelerated MVP delivery by 2x using stable NestJS/React foundation with zero critical bugs. Boosted feature delivery speed by 40% through weekly code reviews and established agile processes. Led technical vision and architecture for marketplace platform.

Software Engineer

LEVTY - Jun 2024 - Jan 2025

Increased efficiency of manual workflows by 5x by implementing custom SydleOne automation processes. Increased delivery quality by 30% using standardized module structure and optimized business rules. Decreased ticket processing time by 25% using streamlined API integrations. Designed workflows and application logic impacting thousands of end-users.

Software Engineer

PicoDev - Jan 2024 - Jun 2024

Enhanced security measures by reducing permission violations by 30% using IAM role isolation and least-privilege access. Boosted delivery throughput by 3x using repeatable MicroSaaS architectures with React and AWS. Reduced deployment effort by 90% by automating build and ECS rollouts using containerized CI/CD pipelines.

Software Engineer

Vita Informatica - Jun 2023 - May 2024

Decreased technician workflow errors by 30% using automated mobile testing solution. Increased technician productivity by 2.5x through automated IoT pipelines. Enhanced maintenance throughput by 4x using secure NestJS API for remote device calibration. Integrated IoT workflows with backend services for industrial sensor testing.

Junior Software Developer

CP2eJr - Sep 2021 - Sep 2023

Improved project delivery speed by 50% using reusable UI components and Scrumban methodology. Increased project revenue by 3x by modernizing tech stack with redesigned architecture. Established Gitflow and PR standards, improving engineering quality by 80% through training 16 developers. Led transition from simple sites to full web systems.

Software Development Intern

Inatel CIDC - Huawei - Jan 2020 - Oct 2020

Reduced full-system freezes by 30x using async job processing improvements. Stabilized billing workflows for 400+ employees with 30% fewer errors using Python/Django refactoring. Enhanced developer productivity by 4x by managing frontline support. Maintained Django/Python codebase for internal platform used by nearly 1,000 employees.

Frequently Asked Questions

What does Matheus Julidori specialize in?

Backend development with extensive experience in API architecture, microservices, and event-driven systems. I specialize in NestJS, Node.js, TypeScript, PostgreSQL, Redis, and AWS to build scalable backend systems. I apply architectural patterns like CQRS, Domain-Driven Design (DDD), Event-Driven Architecture, and Clean Architecture principles.

What are some projects Matheus has built?

I've architected and developed backend systems for Babz LLC (12x API performance improvement), Inatel xGMobile (90x equipment availability increase), OfferIn marketplace (2x MVP delivery acceleration), Dialvox (TTS voice call automation), PicoDev (MicroSaaS studio), and UniJobs (job-matching platform). Most projects are closed-source, but I've delivered measurable impact across telecommunications, marketplaces, and social media startups.

What companies has he worked with?

Babz LLC, Inatel xGMobile, OfferIn (Co-Founder/CTO), LEVTY, PicoDev, Vita Informatica, CP2eJr, and Inatel CIDC (Huawei). I've held roles including Software Engineer, Co-Founder/CTO, and DevOps developer, working on backend systems, cloud infrastructure, and API development.

What technologies does he use?

Backend: NestJS, Node.js, Express, TypeScript. Databases: PostgreSQL, MySQL, MongoDB, Cassandra, MariaDB, Redis. Cloud: AWS (S3, ECS, ECR, RDS, SQS, SNS), GCP, Docker, Kubernetes, Pulumi. Messaging: RabbitMQ, Kafka, Amazon SQS, BullMQ. Infrastructure: NGINX, GitHub Actions. Also experienced with React, TailwindCSS for frontend work.

Does he work with DevOps or infrastructure?

Yes. I architect and deploy AWS and GCP infrastructure, configure Docker and Kubernetes environments, manage NGINX reverse proxies, and implement CI/CD pipelines with GitHub Actions. I've reduced infrastructure costs by 20% and improved deployment efficiency by 87% through infrastructure-as-code and containerization.

What is his education background?

Bachelor's degree in Software Engineering from Inatel (2020-2024), with an academic exchange semester at Jade Hochschule in Germany (2023). Also holds a Technical Degree in Biomedic Equipments from ETE FMC (2017-2019).

What languages does he speak?

Portuguese (native), English (fluent - EF SET C2 Proficient), German (professional working), and Spanish (intermediate).

What achievements and awards has he received?

1st place FETIN, 1st place PROJETE, SRS City Hall Innovation Award, 2nd place PROJETE, EF SET English Certificate (C2 Proficient), and Certificado Expositor at V International Students Symposium.

How do you approach API design?

I follow RESTful principles and design APIs with clear contracts, proper error handling, and versioning strategies. I use NestJS for structured, modular APIs with dependency injection, guards, interceptors, and pipes. I implement authentication with JWT, rate limiting, and proper validation. I also apply CQRS and DDD patterns for complex domains.

What's your experience with distributed systems?

I've architected microservices using event-driven patterns with RabbitMQ, Kafka, and Amazon SQS. I've implemented CQRS for read/write separation, used Redis for distributed caching, and designed systems for horizontal scaling. I've managed distributed systems handling high traffic with proper monitoring, logging, and error handling.

How can I contact Matheus?

Use the contact form on this page or send an email to julidoribmatheus@gmail.com. You can also reach me on LinkedIn at linkedin.com/in/matheusjulidori or call +55 35 988023329.

Contact Me

Have a project in mind or want to discuss opportunities? Send me a message and I'll get back to you as soon as possible.

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