ES
joseph
Say hi ↗

Joseph Camargo, a cloud native engineer

León, Guanajuato — --:--

I'm Joseph, a software engineer designing serverless systems on AWS for banks, governments and global brands.

Available · Remote / Latam

hello,

I'm Joseph, a software engineer from León, Guanajuato. I studied Software Engineering at La Salle Bajío, graduated with academic excellence, and I'm now doing a master's in Software Development and Operations.

A golden retriever resting its chin on a hand
right now
Working at
Principal Financial Group
Studying
Master's in DevOps · UNIR
Based in
León, Gto. · working remote
Joseph with four friends in suits on a terrace in León
I started on backends: leading a team at Volkswagen Group, writing Oracle procedures, wiring OAuth and keeping sprints on track as Scrum Master. That taught me that good software is mostly good decisions made early.
Side ALP · 33⅓ RPM
Cloud Native
Joseph xrex
  1. 01 Cold Start (Intro)0:42
  2. 02 Serverless Love3:21
  3. 03 Single-Table Design4:05
  4. 04 Deploy on Friday2:58
  5. 05 León, Gto.3:33
  6. 06 Infra as Code (feat. CDK)3:47
now playingDeploy on Friday — Joseph xrex
Since then I've built serverless platforms for audits, customs, governments and investments, and today I write full-stack features for financial applications at Principal Financial Group, with infrastructure as code on AWS CDK.
What I enjoy most is the moment a messy process turns into a clean diagram, and that diagram turns into something people use every day without thinking about it.
02 — Sentinel Guard ↗
sentinel / architecture
▭Customs ERPclientλSOAP BridgeC# service◉S3 Raw XMLbucket≡EventBridgerulesλXML Parserλ python≡SQSscoring queue✦Anomaly Scorerλ + Bedrock◉PostgreSQLRDS≡SNS Alertstopic↗VUCEMexternal
SENTINEL · result
94%
anomalies caught pre-submit
PARSE • SCORE • PROTECT • PARSE • SCORE • PROTECT •
handler.py
1score = bedrock.invoke_model(
2 modelId=ANOMALY_MODEL,
3 body=declaration.to_prompt(),
4)
5if score.risk > 0.82: hold(decl)
6▍
main ✓Python · UTF-8 · Ln 6
sentinel.console● live
94%
anomalies caught pre-submit
<2s
scoring per declaration
0
XML rejections last quarter
case
02 / 052024
Backend
SENTINEL
Private · company network only↗
SENTINEL · result
<2s
scoring per declaration
PythonAWS BedrockPostgreSQLC#SQSEventBridge
03 — Lumina Vision CRM ↗
lumina / architecture
▭Store CamerasRTSP≡Kinesis VideostreamsλFrame Samplerλ lambda✦RekognitionemotionsλAggregatorλ lambda◉DynamoDBstreams◇AppSyncGraphQL WS▭React Dashboardclient
LUMINA · result
300ms
camera → dashboard
SEE • FEEL • RESPOND • SEE • FEEL • RESPOND •
handler.ts
1const faces = await rekognition.detectFaces({
2 Image: { Bytes: frame },
3 Attributes: ['EMOTIONS'],
4});
5publish(zone, aggregate(faces));
6▍
main ✓TypeScript · UTF-8 · Ln 6
lumina.console● live
300ms
camera → dashboard
24
stores streaming live
100%
anonymised, no faces stored
case
03 / 052024
Serverless
LUMINA
Deployed on private retail networks↗
LUMINA · result
24
stores streaming live
Kinesis VideoAWS RekognitionLambdaDynamoDBAppSyncReact
04 — Velocity Oracle ↗
velocity / architecture
▭Chat / Teamsclient◇FastAPIdocker · fargate✦LangChain Agentplanner◉Schema Indexpgvector✦LLMbedrockλSQL Guardread-only◉Oracle DBenterprise◉Rediscache
VELOCITY · result
3 days
→ 20 seconds per query
ASK • QUERY • ANSWER • ASK • QUERY • ANSWER •
handler.py
1agent = create_sql_agent(
2 llm=llm, toolkit=OracleToolkit(
3 db=readonly_oracle),
4 retriever=schema_index)
5agent.run("top clients by margin q3")
6▍
main ✓Python · UTF-8 · Ln 6
velocity.console● live
3 days
→ 20 seconds per query
640
tables indexed
0
writes allowed by the guard
case
04 / 052024
Backend lead
VELOCITY
Private deployment · no public repo↗
VELOCITY · result
640
tables indexed
LangChainOracle DBFastAPIDockerpgvectorRedis
05 — Aura Optimizer ↗
aura / architecture
≡EventBridgenightly↗CloudWatchmetrics↗Cost ExplorerbillingλCollectorλ python◉S3 Data Lakeparquet✦Forecast Modelscikit-learnλRecommenderλ lambda◉DynamoDBactions▭Slackalerts
AURA · result
−31%
monthly AWS spend
MEASURE • PREDICT • SAVE • MEASURE • PREDICT • SAVE •
handler.py
1model = GradientBoostingRegressor()
2model.fit(X_usage, y_cost)
3forecast = model.predict(next_30d)
4recs = rightsize(idle(instances))
5slack.post(recs)
6▍
main ✓Python · UTF-8 · Ln 6
aura.console● live
−31%
monthly AWS spend
±4%
forecast error
nightly
fully automated
case
05 / 052025
Data
AURA
Proprietary source code↗
AURA · result
±4%
forecast error
CloudWatchCost ExplorerPythonScikit-LearnS3AWS SDK
( experience )

Where
I've
shipped.

6 stops · 2023 → now · scroll →
  1. 06
    Aug 2026 — Present live

    Principal Financial Group

    Software Engineer

    Full-stack features for internal financial apps with Next.js and AWS, an end-to-end visitor registration system with QR check-in and a real-time dashboard, and infrastructure as code with AWS CDK in a regulated, global team.

  2. 05
    Jun 2025 — Aug 2026León, Gto.

    Gobierno León

    Full-stack Developer

    A document management platform on S3 with versioning and access control, a land subdivision permit system with AI soil-extraction detection orchestrated in n8n, and ETL pipelines for institutional data.

  3. 04
    Apr 2025 — Dec 2025Remote

    DGMX Tech

    Full-stack Developer

    An investment platform on the Tradier API with bulk buying and selling, a DynamoDB architecture built for real-time concurrency, and Lambda processing for portfolio operations.

  4. 03
    Oct 2024 — Apr 2025San Miguel de Allende, Gto.

    Gobierno de San Miguel de Allende

    Frontend / Backend Developer

    Ubuntu VPS and advanced NGINX for high availability, new modules for the internal Next.js SGI system, and CI/CD with GitHub and cPanel.

  5. 02
    Jul 2023 — Sep 2024León, Gto.

    CBQA Solutions México

    Full-stack Developer

    A serverless audit app (Lambda, S3, SQS, DynamoDB, RDS, Textract, Secrets Manager), VUCEM integration over SOAP in C# with automated customs PDFs, and PostgreSQL tuning.

  6. 01
    Jul 2023 — Nov 2024León, Gto.

    Volkswagen Group

    Backend Lead / Scrum Master

    Led the backend team on Express.js and OAuth 2.0 services, critical Oracle business logic, and ran sprints and ceremonies as Scrum Master.

↳ git init · 2023
3+
years shipping to production
6
teams, from Volkswagen to banking
10+
AWS services in production
5
AWS & Scrum certifications
( certifications )
  • 01AWS Certified Cloud PractitionerAmazon Web Services
  • 02Architecting Solutions on AWSAmazon Web Services
  • 03Serverless Architectures on AWSAmazon Web Services
  • 04DevOps on AWS: Code, Build, and TestAmazon Web Services
  • 05Scrum Foundation Professional CertificateSFPC
( education )
2026 — 2027
Master's in Software Development and Operations
UNIR · Universidad Internacional de La Rioja
In progress
2020 — 2024
B.S. Software Engineering and Computer Systems
Universidad La Salle Bajío
GPA 9.6 / 10 · Academic excellence
( languages )
Spanish — native
English — B2 advanced
( approach )
Architecture driven.
Interface focused.
( stack )
AWS LambdaNext.jsTypeScriptDynamoDBAWS CDKReactPythonBedrockNode.jsAWS LambdaNext.jsTypeScriptDynamoDBAWS CDKReactPythonBedrockNode.js
PostgreSQLFastAPIServerlessDockerOracleC#n8nLangChainTailwindPostgreSQLFastAPIServerlessDockerOracleC#n8nLangChainTailwind