Hello, I’m

Lucas Martin Sing

Senior Backend Engineer (Python)

Backend engineer with 5+ years building and scaling APIs used by millions. I’ve led migrations (reCAPTCHA, entitlements), owned high-traffic prod issues, and delivered features across payments, collaboration, and data platforms. Tooling: Django, FastAPI, PostgreSQL, AWS, Terraform, CI/CD.

Customer-orientedMulti-industry expertiseObservability-first

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About

Senior backend engineer with 5+ years designing and scaling APIs, working with cross-functional teams, and aligning engineering with business goals. Recently at Globant → Gannett (USA Today Network), I led migrations in security and access control, owned production incidents at scale, and shipped backend changes powering 20+ high-traffic products. I care about clean code, observability, and DX.

Highlights

Production ownership: reduced 40K+/hr invalid session errors with logging, monitoring, tracing.
Security & platform migrations: reCAPTCHA + user entitlements, Fastly edge rules.
Payments: Zuora, Avalara, Allpago; rebuilt core payment components.
Developer tooling: Terraform, GitHub Actions CI/CD, Grafana dashboards.
Stack: Python (Django/DRF, FastAPI), PostgreSQL, AWS, Docker.

Projects

APIs and services for authentication, sessions, and entitlements across 20+ products. Led reCAPTCHA + entitlement migrations and resolved high-volume session issues with better telemetry.

PythonDjangoPostgreSQLFastlyGrafanaTerraformCI/CD

Rebuilt core billing flows integrating Zuora, Avalara, and Allpago; supported global invoicing & compliance with automated tests and dashboards.

Django/DRFPostgreSQLZuoraAvalaraAllpagoGitHub ActionsGrafana

Co-created an internal/external app to boost meeting productivity; contributed to backend APIs and integration with Zoom.

ReactDjangoZoom SDKAWS

Features for an AI-powered dashboard helping executives analyze KPIs across sources; improved caching & DB performance (~35%).

Vue.jsDjango RESTPostgreSQLRedisAzure

Personal platform for AWS & SWE learning: FastAPI on Lambda + API Gateway, DynamoDB for questions & progress, Cognito auth, Expo app.

FastAPIAWS LambdaAPI GatewayDynamoDBCognitoTerraformReact-Native

Speech-to-text offline with Whisper-tiny on ONNX-WASM; background SW, offscreen doc, audio worklet; E2E tests with Puppeteer.

TypeScriptONNX-WASMChrome MV3AudioWorkletPuppeteeresbuild

Experience

Senior Backend Engineer

Globant → Gannett (USA Today Network) · Germany · Remote

Aug 2024 – Mar 2025

Python · Django · PostgreSQL · Terraform · CI/CD · Grafana · Fastly

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Led development of APIs powering 20+ high-traffic products.

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Drove migration of reCAPTCHA and user entitlement services.

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Owned production issues (40K+/hr session errors); added logging, monitoring, tracing to resolve at scale.

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Collaborated with U.S. product teams on subscription flows & backend delivery.

Software Engineer (Payments & Porter)

Prezi · Germany · Remote

Sep 2022 – May 2024

Django · React · AWS · PostgreSQL · GitHub Actions · Zoom SDK

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Co-created Porter, a Zoom-integrated collaboration app to improve meeting productivity.

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Rebuilt payment infrastructure integrating Zuora, Avalara, Allpago; global invoicing & compliance.

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Automated key test flows and built Grafana dashboards; reduced post-release incidents by ~40%.

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Shaped API contracts with frontend and payment partners.

Full-stack Developer

ValueWorks · Germany · Remote

Jan 2022 – Jun 2022

Vue.js · Django REST · PostgreSQL · Redis · Azure

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Delivered features for an AI-powered executive dashboard used by C-level users.

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Refactored caching & DB layer, reducing average load time by ~35%.

Full-stack Python-JS Developer

Justus Liebig Universität · Gießen, Germany · Hybrid

Nov 2019 – Dec 2021

Django · JavaScript · SQLite · C++ · OpenCV · Docker

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Built firmware + UI for chromatography instruments used in academic research.

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Mentored junior devs; delivered Django + C++ + OpenCV systems for data acquisition.

Skills

Backend (Python)

Django / DRFFastAPIPydanticpytestSQLAlchemy

Cloud & DevOps

AWSTerraformGitHub ActionsDockerGrafanaFastly VCL

Data & Messaging

PostgreSQLRedisRabbitMQDynamoDb

Payments & Integrations

ZuoraAvalaraAllpagoZoom SDKLinkedinPersonioBambooHRDatevAsanaGoogle SheetHarvestShopify

Frontend & Mobile

ReactNext.jsChakra UI v3Vue.jsExpo / React-NativeTypeScript

Practices

Clean CodeSOLIDCI/CDObservabilitySecurity basics

Education

Engineer's Degree

Universidad Tecnológica Nacional · Argentina

2012 – 2019

• Graduated with a focus on microcontroller programming and hardware programming (VHDL).

Engineering Internship

Ruhr University Bochum · Germany

2017 – 2018

Award: DAAD Scholarship

German Academic Exchange Service · Germany

2017 – 2018

• Scholarship for students in engineering sciences.

Award: YPF Foundation Scholarship

YPF Foundation · Argentina

2012 – 2017

• Awarded for academic excellence.