work

Julio Cesar Avolio — full-stack engineer in Rio de Janeiro, building e-procurement systems for US public agencies at PlanetBids.

work
role	org	period	stack
full-stack developer	PlanetBids (GoFasti)	2025-09 — present	python · django · react · ember · aws · terraform · kubernetes · opensearch · ses · sqs
backend developer	topictree	2023-12 — 2025-11	python · gcp · cdn · scrum
full-stack developer	V.tal	2022-08 — 2023-11	python · react · django · uipath · jenkins · docker · postgresql · linux
O&M intern	V.tal	2022-01 — 2022-08	linux · openstack · zabbix
IT intern	Oi	2021-08 — 2021-12	grafana · zabbix · linux

PlanetBids · full-stack developer

2025-09 — present · remote, United States

E-procurement for US public agencies. Django backends, AWS infrastructure, and a frontend where React and Ember have to coexist.

Designed and built a unified email service end to end. Delivery logic had been spread across ColdFusion, Django, Hub, Portal, Postfix and separate SES integrations; it is now one service on AWS SES with SQS batch queues, Kubernetes send workers and quota controls. One system now owns the customer lifecycle communications.
Built the AI extraction flow for agency documents that existed only as scans, tuning the vision layer so scans are detected and their fields read automatically. Cut the time for a customer to fill in a submission.
Established the company's first infrastructure-as-code pattern: wrote the first Terraform configuration and the guidelines around it, built the internal documentation, guided other services through migration, and owned the CI/CD.
Maintain the compatibility layer that translates between React and Ember, so React work can continue without breaking the Ember codebase.
Designed AWS microservices around OpenSearch, improving search performance and enabling advanced indexing workflows.
Built AI experts and skills that turn product requirements into technical language, speeding up ticket writing and slicing for the product team.

2023-12 — 2025-11 · remote

Architected and optimised critical infrastructure, most of it around the company's content delivery network.

Designed and implemented the company's CDN, integrated it across services, and wrote the class that streamlined the whole path. Image loading times dropped substantially.
Researched GCP services, YouTube services and API options, which led to replacing several services with ones better suited to the job.
Improved the rank tracker: added filters to the visualisations and built fallbacks so images still appear when the source is unavailable.
Built user activity monitoring and auditing to get a clearer picture of what users actually needed.
Improved naming conventions and enforced coding standards to keep the codebase consistent.

2022-08 — 2023-11 · Rio de Janeiro, Brazil

Automation of critical network operations tasks, plus the web tooling the operations teams used to watch the result.

Led the ONT homologation automation project, which reduced the process time by 80%.
Built automations with UiPath, Python, Selenium and RobotFramework.
Used Jenkins to create health checks that validated the integrity of production environments, reducing unexpected incidents.
Led development of the integration portal in React and Django, giving operations teams the tooling to monitor and manage systems. It reduced incident response time by 30%.
Maintained and configured the Linux environments, and set up Docker environments for portability.

2022-01 — 2022-08 · Rio de Janeiro, Brazil

Preventive server maintenance and private-cloud monitoring.

2021-08 — 2021-12 · Rio de Janeiro, Brazil

Keeping critical systems and networks available, and handling the alarms when they were not.

Administered the Grafana and Zabbix monitoring tools so anomalies were caught early.
Handled Business Alarms that impacted the network and servers, working to restore normal operation.
Used SGFT, the fault and traffic management system, to document incidents and track resolution.

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