PORTFOLIO / 2026BALI → REMOTE WORLDWIDESCROLL ↓

Ariel Pratama
Lesmana

Fullstack developer shipping reliable web systems and production AI features. Currently at Senserbot, remote.

3+
years building production systems
95%
accuracy on CNN-based fitness AI
100%
Azure deploy success — zero rollbacks

A backend-leaning fullstack engineer with a soft spot for AI in production.

I build GenAI-powered systems and fullstack web platforms — from RAG pipelines and LLM integrations to production APIs that actually work at scale.

Currently at Senserbot, building AI-driven solutions for logistics and e-commerce — RAG pipelines, LLM integrations, and intelligent automation. Before that I shipped dashboards, GenAI features, and zero-rollback deployments at Insignia, and spent two years at Etherval IT Consultancy leading ERP work, AWS infra, and a CNN-based fitness app.

I care about query performance, automated testing, and CI/CD discipline — the unglamorous stuff that keeps systems from breaking at 2am. I speak Indonesian (native) and professional English.

Two roles, three years, lots of shipped systems.

Jun 2026 — Present
● NOW
GenAI Software Engineer at Senserbot PTE. LTD
Remote
01Designing RAG pipelines for document retrieval and AI-powered search across logistics and e-commerce data.
02Developing LLM-integrated backend services with FastAPI, implementing prompt engineering, context management, and response evaluation.
03Building AI agent workflows for automated decision-making in fourth-party logistics operations.
04Implementing vector search and embedding pipelines using ChromaDB and sentence-transformers for semantic retrieval.
4PL
AI-powered logistics platform
Stack
FastAPIPythonChromaDBsentence-transformersLLMRAGDocker
Jun 2025 — Jun 2026
Fullstack Developer at Insignia
Remote
01Built a full-stack dashboard system improving data visibility and operational efficiency for clients.
02Designed RESTful APIs for reliable backend integrations across multiple client systems.
03Integrated GenAI models into production — pushed latest improvements live without regressions.
04Optimized DB queries for measurable response-time gains and better app performance.
100%
successful Azure deploys — zero rollbacks
Stack
Next.jsNode.jsREST APIAzurePostgreSQLGenAILLM
Aug 2023 — May 2025
Software Engineer at Etherval IT Consultancy
Surabaya, Indonesia
01Led ERP development used daily by 10–20 users; cut lag in key flows.
02Integrated AWS Lambda, ECR, ECS, S3 — slashed debugging time, hit 80% reliability for AI functions.
03Engineered an AI fitness app with CNNs and Google ML libs to track exercise form — 95%+ accuracy.
04Optimized report-gen query perf across ~10k records on MariaDB, PostgreSQL, MongoDB.
05Introduced automated testing — reduced deployment errors to 2%; integration tests on every branch.
06Built CI/CD via GitHub Actions — production deployment success rate climbed to 90%.
95%+
accuracy on CNN-based exercise form tracker
Stack
Spring BootNestJSFastAPIAWSDockerTensorFlowPostgreSQLMongoDBMariaDBGitHub Actions

What I reach for, by category.

Languages
Python
Languages
JavaScript
Languages
TypeScript
Languages
Java
Languages
SQL
Languages
Dart
Languages
Kotlin
Languages
C
Languages
HTML/CSS
Frontend
Next.js
Frontend
React
Backend
Node.js
Backend
NestJS
Backend
FastAPI
Backend
Spring Boot
Backend
REST API
Databases
PostgreSQL
Databases
MongoDB
Databases
MariaDB
Databases
Supabase
Databases
ChromaDB
AI/ML
GenAI
AI/ML
LLM Integration
AI/ML
RAG
AI/ML
sentence-transformers
AI/ML
Prompt Engineering
AI/ML
NLP
AI/ML
TensorFlow
AI/ML
CNN
AI/ML
ARIMA
Infra
Docker
Infra
AWS
Infra
Azure
Infra
GitHub Actions
Infra
CI/CD
Infra
Jenkins
Infra
Git
Infra
Linux

Degree, certs, languages.

Jul 2019 — Jul 2023
Institut Sains dan Teknologi Terpadu Surabaya
Bachelor of Informatics, Computer Science
Surabaya, Indonesia
Relevant Coursework
Data StructuresBig DataMachine LearningDeep LearningArtificial IntelligenceGenerative AlgorithmData AnalyticsData Mining
Certifications
Intro to Machine Learning
Kaggle
Jan 2025
AWS Academy Graduate — Data Analytics
Amazon Web Services
2023
Spoken Languages
Indonesian
Native
English
Professional
Contact

Let's build something together.

Emailariel.p.lesmana@gmail.comLinkedInariel-p-lesmanaGitHubariel-lesmana