Available for Work

Piyush
Sontakke

>Full-Stack Engineer
Full-Stack Engineer who builds, ships, and supports web applications.

Python · Django · React/Next.js · Agentic AI / LLM Applications

Download ResumeContact Me
2+
Years in Production
1
Product Studio
Django
Backend
React
Frontend

Studio / Parent Brand

ElixirFlow

ElixirFlow is my product engineering studio and the parent brand for the products I develop.

Visit ElixirFlow
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// about me

I don't just
write code.
I own products.

Backend Systems
APIs, webhooks, and background jobs
Product Delivery
Schema, frontend, testing, and deployment
ElixirFlow
Product engineering studio and parent brand

I build production web applications with Python, Django, React, and Next.js. My work covers PostgreSQL schema design, REST APIs, frontend integration, testing, and AWS deployment.

At ElixirFlow, I work as founder and product engineer. I develop products from initial design through implementation, deployment, and client delivery.

My earlier contract work focused on payment gateway integrations, webhooks, reconciliation, background jobs, and production support for startup applications.

> skills --list --all
Backend & APIs
PythonDjangoDjango REST FrameworkFastAPIRESTful APIsWebhook ArchitectureJWT AuthRBACPydantic
Async & Queues
CeleryRedisBackground JobsCron Scheduling
Databases
PostgreSQLDjango ORMComplex JoinsPaginationQuery Optimization
Infrastructure
AWS EC2DockerDocker ComposeNginxLinuxMonitoringIncident Debugging
Frontend
JavaScriptReactNext.jsSSR/SSGTailwind CSSshadcn/uiResponsive UIREST API Integration
Payments & Integrations
SabPaisaPhonePePine LabsAES EncryptionWhatsApp Business API
Testing
pytestUnit TestsIntegration TestsWebhook Simulation
Tools
GitGitHubPostmanHTMLCSSSQL
AI / GenAI
OpenAI APIRAG PipelinesPrompt EngineeringLangChainVector DatabasesMulti-Agent SystemsAgentic WorkflowsLLM EvalsObservability & TracingGuardrailsStructured Outputs
// experience

Where I've shipped

Founder & Product Engineer

ElixirFlow · Self-employed

Apr 2026 - PresentRemote
Current RoleSolo AI Product Studio

Run a solo AI product engineering studio and develop products from design through Django and React implementation, AWS deployment, and client delivery.

Full-Stack Engineer

Independent Contract & Freelance Engagements

May 2024 - Apr 2026Pune · Remote
Independent ContractorStartup Delivery

Delivered web applications for startups through independent, invoice-based engagements. Work covered scoping, implementation, deployment, and production support.

// projects

What I've built

ProductionPrivate · Contract Project

Gyfton

Product gifting platform: backend architecture and API development

Next.jsPythonDjango Rest FrameworkPostgreSQLRedisCeleryAWS EC2NginxGunicornDockerAWS S3
▸Architected backend APIs for products, orders, categories, and user management with clean service separation
▸Implemented secure JWT authentication and role-based access control (RBAC)
▸Built webhook-driven integrations for async data fetching from external catalogue and logistics providers
▸Background task processing using Celery/Redis for order lifecycle management and audit logging
▸Automated tests (pytest) covering API endpoints, webhook simulations, and integration edge cases
▸Deployed on AWS EC2 with Docker Compose and Nginx, optimized for high concurrency
ElixirFlow ProductElixirFlow product

DocChase

WhatsApp-first document-collection tool for chartered-accountancy firms

DjangoCeleryRedisPostgreSQLWhatsApp Business API
▸Automates document requests, tracking, and escalation against GST and ITR filing deadlines
Audit OfferingElixirFlow product

AgentAudit

30-point production-readiness audit for LLM and agent systems

LLM EvalsTracingGuardrailsCost ControlsFallback Paths
▸Landing page and paid audits
// education & certifications

Credentials

B.Tech - Electronics & Communication Engineering

Rajiv Gandhi College of Engineering, Chandrapur

2023·India

PG Certification - Generative AI & Multi-Agent Systems

Coding Ninjas × IIT Mandi-TIH

Generative AI · Multi-Agent Systems
Professional Certification
Prompt EngineeringRAG PipelinesOpenAI APIAgentic WorkflowsMulti-Agent SystemsLangChainVector DatabasesLLM EvaluationObservability & TracingGuardrails
// contact

Let's connect

Open to new opportunities

Full-Stack Engineer · Python/Django · React/Next.js · Agentic AI

Download ResumeRequest a Call
2+
Years in Production
1
Solo AI Studio
UTC+5:30
Remote Time Zone

Location & availability

Based in Pune, India. Open to relocation to Bengaluru, Mumbai, or NCR, as well as remote opportunities. UTC+5:30 with comfortable UK/EU overlap.

Email: piyushsontakke28@gmail.com