Open to interesting work

Divij Jain Elixir Engineer

I build calm, durable software for messy real-world problems.

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Projects shipped

Years writing code

Elixir

Primary weapon

∞

Uptime, ideally

Elixir Erlang / OTP Go C++ JavaScript Phoenix LiveView Ecto Oban Broadway Absinthe (GraphQL) REST APIs Docker Kubernetes Terraform AWS (EKS, ECR, EC2, IAM) ArgoCD CircleCI GitHub Actions PostgreSQL pgvector Redis MySQL Mnesia RabbitMQ Amazon SQS Grafana Prometheus Datadog CloudWatch TDD ExUnit Claude Code MCP RAG Vector Databases Agent orchestration LLM-as-judge (DeepEval) Cursor GitHub Copilot Domain modelling System architecture Technical writing Product scoping

Experience

Where I've worked

Product and backend engineering, mostly on the BEAM.

Independent

· Senior Software Engineer · Consultant

April 2026 — Present — Remote

Building operational software end to end for clinics, manufacturers and back offices — domain research, architecture, implementation and deployment — alongside agentic AI systems built to production-grade reliability standards.

Architected an agentic document-compliance pipeline as a Reactor pipeline over MCP tool servers, reaching a 0% hallucination rate and 100% decision accuracy across 79 fixtures via a two-tier evaluation harness that avoids self-grading bias
Built Better Me, a mobile-first health OS with a RAG-powered Claude chat interface and a pgvector similarity pipeline over daily logs
Shipped a costing PWA that replaced a manual daily calculation at a PVC compound plant
Took a clinic from a static brochure site to a booking-and-portal Phoenix application
Own the full stack on every engagement: Postgres schema through LiveView UI to deploy

ElixirPhoenixLiveViewObanReactorPostgresInstructorMCP

Yolo Group

· Senior Software Engineer

Oct 2022 — April 2026 — Tallinn, Estonia (Remote)

Developed the tech for all Resort, Casino and Restaurant operations at Bombay Resort — including YOLO Wallet, a fintech payment application handling individual transactions up to $1M and $10M–$20M in daily volume.

Delivered a centralized Admin UI (Phoenix LiveView) dashboard with complete ownership, working closely with Product and Design
Architected a Backoffice application using Absinthe (GraphQL) to securely manage complex internal casino data
Integrated multiple fiat and cryptocurrency onrampers for card and bank-transfer purchases
Owned infrastructure as code with Terraform, provisioning and managing Kubernetes clusters with ArgoCD driving GitOps-style continuous deployment
Built automated CircleCI pipelines enforcing unit tests and publishing release builds to Docker registries

ElixirPhoenixLiveViewAbsintheObanErlang/OTPPostgreSQLTerraformKubernetesArgoCDCircleCIDockerGrafana

Bombay Club YOLO Group

BlockFi

· Senior Software Engineer

May 2021 — Aug 2022 — New Jersey, USA (Remote)

Built the crypto-backed loan platform behind a $100M loan book: event-sourced loan lifecycle management, real-time LTV monitoring and settlement under high concurrency.

Engineered a crypto-backed loan platform supporting a $100M loan book, using Event Sourcing for the loan lifecycle, LTV monitoring and settlement
Decoupled a legacy monolith into a scalable Elixir microservices architecture using Domain-Driven Design
Built resilient, concurrent data pipelines with Broadway and RabbitMQ for high-throughput message processing
Established a strict TDD culture reaching >90% test coverage, with Prometheus, Grafana and OpenTelemetry observability

ElixirErlang/OTPPhoenixLiveViewEvent SourcingRabbitMQPostgreSQLKafkaKubernetes

Octro Inc.

· Software Engineer

Feb 2019 — May 2021 — Remote

Architected distributed, fault-tolerant server-side infrastructure for massive multiplayer games — Poker, Teenpatti, Indian Rummy, Soccer Battles — supporting 80,000+ concurrent users and 50M downloads.

Scaled distributed Erlang nodes with advanced deadlock management to seamlessly support 80,000+ concurrent users
Reduced database load and latency by optimizing data flow through OTP processes between Redis and Mnesia
Developed dynamic poker bot logic and custom Ejabberd (XMPP) modules for Facebook and Amazon integrations
Owned core game lifecycle mechanics and in-app purchase integrations

Erlang/OTPRedisMySQLMnesiaEjabberd/XMPPPHP

Octro Poker Teen Patti — Play Store

Selected work

Things I've built

Operational software for real businesses — each one started as somebody's actual problem.

AI pipeline · Phoenix + Reactor / 2026 In progress

Document Compliance Engine

A compliance pipeline that reads a contract and a W-9, extracts structured data with an LLM, cross-validates every fact against external systems, and pauses durably for a human when something doesn't line up — evaluated at a 0% hallucination rate across 79 fixtures.

ElixirPhoenixLiveViewObanReactorBanditPostgresInstructorMCPCloakDeepEval

Read the case study

More projects

Personal OS · Mobile-first

Better Me

A mobile-first personal operating system for habits, workouts, nutrition, body metrics and todos, unified by a custom AI insight engine that actually answers cross-domain questions instead of leaving the data in five silos.

Elixir Phoenix Channels Oban

E-commerce · B2B

DentalStore

A single-seller e-commerce store selling dental supplies and equipment directly to dentists and clinics across India.

Elixir Phoenix LiveView

Full rebuild · Clinic platform

Dentos

A full rebuild of dentosclinic.com — from a static marketing site into a dynamic Phoenix application with appointment booking, a patient portal and an admin area.

Elixir Phoenix LiveView

Toolkit

What I work with

Deliberately narrow. I'd rather know a small stack deeply than a large one shallowly.

Languages & Runtime

ElixirErlang / OTPGoC++JavaScript

Backend & Frameworks

PhoenixLiveViewEctoObanBroadwayAbsinthe (GraphQL)REST APIs

Cloud & DevOps

DockerKubernetesTerraformAWS (EKS, ECR, EC2, IAM)ArgoCDCircleCIGitHub Actions

Data & Messaging

PostgreSQLpgvectorRedisMySQLMnesiaRabbitMQAmazon SQS

Observability & Testing

GrafanaPrometheusDatadogCloudWatchTDDExUnit

AI & Agentic Systems

Claude CodeMCPRAGVector DatabasesAgent orchestrationLLM-as-judge (DeepEval)CursorGitHub Copilot

Practice

Domain modellingSystem architectureTechnical writingProduct scoping

Contact

Let's build something durable

I'm open to consulting work, contract engagements and interesting problems — especially anything involving Elixir, operational systems, or making AI reliable enough to trust in production.

divij15103218@gmail.com

@divijjain /in/divij-jain0707 divij15103218@gmail.com Chat on WhatsApp