§1 Overview

From the mobile screen to production, I work on what keeps software running.

Senior software engineer with five years of experience. I work in mobile at Banco do Brasil, with big responsibilities on one of the most used features of the app, and also work with the platform and DevOps side behind it.

Get in touch See what I built, §4

gm — zsh

$ gm status
mobile        react-native   ●  in production
platform      k8s / argocd   ●  in production
observability prometheus     ●  in production
accessibility wcag 2.2 aa    ●  in production
next-role     —              ○  open
$

§2

Background

I started on the screen and followed the request down.

I started in mobile, shipping React Native. When something broke, the cause was usually below the component: in the pod, the pipeline, or a dashboard that didn't exist yet. So I started working on that layer too.

Today I work on the account statement at Banco do Brasil, one of the most used features of the app, where I've been for nearly three years. I write the screen and work with the platform it depends on, so I work on both sides of the request.

Platform Engineering is where I want to focus next. The mobile background helps: I know how infrastructure decisions show up on the user's screen. Accessibility is part of that: a screen that works with VoiceOver and TalkBack is a screen that works.

PATH OF ONE REQUEST

PhoneReact Native
BFFtransaction details
ClusterKubernetes · ArgoCD
TelemetryOTel → Prometheus
AnalysisDatabricks

09:41●●●

STATEMENT

Checking account

Nov 2026

AllPIXCardsTransfers

TODAY

PIX received

Transfer · 14:02

+

Grocery store

Card · 12:40

−

YESTERDAY

PIX sent

Transfer · 19:15

−

Salary

Deposit · 08:00

+

Streaming

Card · 06:30

−

NOV 1

Rent

Transfer · 09:00

−

§3

Experience

ordered newest first

PERIOD	ORGANIZATION	ROLE	SCOPE
Mar 2025 — now	Banco do Brasil · via Getronics	Senior Software Engineer	Works on the account statement and the platform behind it: React Native app, Java backend services and core banking integration, Kubernetes with Helm and GitOps, CI/CD, Go tooling, observability standards with Prometheus, Grafana and OpenTelemetry, usage analytics in Databricks.
Jan 2024 — Mar 2025	Banco do Brasil · via Cast group	Fullstack Mobile Engineer II	Built the transaction details screen in React Native and the Java APIs integrating the app with the mainframe. Worked on PIX, TED and transfer flows. Supported Kubernetes deployments, Helm charts, CI/CD pipelines and Grafana dashboards.
Apr 2023 — Jan 2024	SmartSE	Front-end Developer	Introduced DevOps practices and CI/CD to the project. Architected a Next.js 13 application with Tailwind, React Context and custom hooks.
May 2022 — May 2023	DashCommerce	Full Stack Developer	Firebase Cloud Functions, ERP integrations (Tiny, Bling) via REST and SOAP with health monitoring, encryption of sensitive keys, mobile features with Angular and Ionic.
Dec 2021 — Aug 2022	Metadevs	Back-end Developer	Backend structure with routes, APIs and cryptographic features. Git workflow, documentation and tests.

§4

Account statement

what I worked on at Banco do Brasil

4.1
Account statement
I built the account statement and took care of its architecture.
4.2
Statement details
Architecture and development of the statement details.
4.3
CI/CD
I took care of the CI/CD automations.
4.4
Developer tooling
Internal automations for developer configuration.
4.5
New receipt
I also helped build the new receipt.

§5

Stack & automation

what I work with, and how it ships

deploy pipeline · statement · main → prod● last run: passed

Buildpassed
GitHub Actions
- ✓ lint · typecheck · unit
- ✓ docker build · sbom
Testpassed
GitHub Actions
- ✓ integration (BFF)
- ✓ detox (RN, iOS/Android)
Releasepassed
Helm · ArgoCD
- ✓ chart bump
- ✓ argocd sync (GitOps)
Verifypassed
Prometheus
- ✓ canary 10% · 15 min
- ✓ error ratio within SLO
Observelive
Grafana · OTel
- ● dashboards + alerts
- ● behavior events → Databricks

PLATFORM: Kubernetes · Docker · Helm · ArgoCD (GitOps) · Terraform
MOBILE: React Native · TypeScript · Next.js
ACCESSIBILITY: WCAG 2.2 · VoiceOver · TalkBack · axe · RN accessibility API
CLOUD: AWS · Azure · GCP
CI / CD: GitHub Actions · Jenkins · ArgoCD
OBSERVABILITY: Prometheus · Grafana · OpenTelemetry
DATA: Databricks
LANGUAGES: Go · Java · TypeScript

.github/workflows/deploy.yml

on:
  push: { branches: [main] }
jobs:
  build:   { uses: ./workflows/build.yml }
  test:    { needs: build, uses: ./workflows/test.yml }
  release: { needs: test, uses: ./workflows/helm.yml }
  verify:  { needs: release, run: ./scripts/canary.sh }
  observe: { needs: verify, run: ./scripts/annotate.sh }

automation — what runs without me

* 6 * * 1-5   terraform plan → PR comment if drift
*/5 * * * *   argocd app diff → slack if out of sync
0 */1 * * *   otel events → databricks (behavior job)
on-alert      prometheus → runbook link → on-call

§6

Lab: projects in the pipeline

status reflects actual progress

6.1
homelab-platform
Kubernetes cluster from scratch: Terraform, ArgoCD, Prometheus and Grafana. A small version of the platform setup I use at work.
terraform · k8s · argocd · grafana
1. ● planned
2. ○ building
3. ○ shipped
6.2
kstat
A Go CLI that prints a one-screen health summary of a Kubernetes namespace.
go · cobra · k8s api
1. ● planned
2. ○ building
3. ○ shipped
6.3
pocket-statement
A React Native app that turns a CSV export into a readable statement.
react-native · expo · typescript
1. ● planned
2. ○ building
3. ○ shipped

§7

Contact

Open to Platform Engineering, SRE, DevOps and Software Engineering roles, remote or hybrid.

Send me a message here and it goes straight to my inbox. Resume is a one-page PDF.

Download resume (PDF)

EMAIL: gabmirandadev@gmail.com
LINKEDIN: linkedin.com/in/gabmirandadev
GITHUB: github.com/strkalec
LOCATION: Brasília, Brazil · UTC−3

gm — zsh

$ whoami
gabriel-miranda · senior software engineer · brasília
$ kubectl get skills -n gabriel
NAME             READY   STATUS
react-native     1/1     Running
kubernetes       1/1     Running
argocd           1/1     Running
observability    1/1     Running
accessibility    1/1     Running
$ status
open to work · remote or hybrid
$

From the mobile screen to production, I work on what keeps software running.

I started on the screen and followed the request down.

Account statement

Statement details

CI/CD

Developer tooling

New receipt

homelab-platform

kstat

pocket-statement

Open to Platform Engineering, SRE, DevOps and Software Engineering roles, remote or hybrid.