Oleg Janeiko

Oleg Janeiko
Senior Software Engineer | AI Agent & Full-Stack Engineer
Ex-Salesforce, Apple, AOL

(415) 314-0797 oleg.janeiko@gmail.com LinkedIn GitHub

Professional Summary

Skills

Languages: TypeScript/JavaScript, Node.js, Python
AI/ML: LangChain/LangGraph, Google Vertex AI, Vector Databases (Chroma), LLMs
Frameworks: React, SolidJS, FastAPI, shadcn, TailwindCSS
Infrastructure & Tools: Google Cloud, AWS, Docker, CI/CD, Git Flow
Methodologies: TDD, AI assisted coding, Agile, Scrum/Kanban

Work Experience

CRM Director

Nova Ukraine (Remote)
  • Recruited and led a team of 40+ volunteers and contractors, scaling humanitarian aid logistics after the invasion of Ukraine.
  • Spearheaded the development of a custom CRM that enabled the distribution of $24.5M in aid and continues to be used, tracking over $160M in total impact.
  • Architected and implemented a new team collaboration workflow that increased operational output and impact tenfold.

Senior Member Of Technical Staff

Salesforce.org (San Francisco, CA / Remote)
  • Engineered and launched key features for the Philanthropy Cloud platform using TypeScript, React, GraphQL and Scala, enabling corporate clients to manage donation and volunteering campaigns.
  • Partnered with Product and UX to architect and implement simple solutions for complex user workflows, improving user engagement on the platform.

Senior Software Engineer

Premise Data (San Francisco, CA)
  • Engineered campaign management and analytics tools used by governments and NGOs for humanitarian aid and disaster relief programs.
  • Implemented a Nightwatch.js automated testing suite from the ground up, significantly increasing test coverage and platform stability.
  • Contributed to a high-quality codebase by embracing engineering best practices, including rigorous linting, type-checking (Flow) and detailed PRs.

Full Stack Engineer

Apple (Cupertino, CA)
  • Developed React publishing tools, Node.js microservices, css animated interactive guides, and supporting infrastructure for all Apple product's multilingual documentation.
  • Led a new machine learning initiative through the full lifecycle: from hardware setup (Linux, Docker) and data preprocessing to TensorFlow model deployment.
  • Mentored and guided interns on experimental ML projects to foster team growth and innovation.

Senior Software Engineer

Sharethrough (San Francisco, CA)
  • Re-architected a high-traffic ad serving script in plain JavaScript, optimizing it to handle 3 billion requests per month with minimal latency.
  • Architected and deployed a high-availability image resizing service on AWS, designed to dynamically crop and serve millions of ad assets.
  • Developed solutions for Supply Side Platform (SSP) and Demand Side Platform (DSP) products.
  • Analyzed campaign discrepancies and supported Android SDK integrations.
  • Practiced rigorous TDD and pair programming in a Pivotal Labs-mentored agile environment, contributing to a culture of high-quality code and continuous delivery.

Software Engineer

AOL (Palo Alto, CA)
  • Developed the AOL Mail responsive web app with Google Closure, targeting early mobile and tablet devices.
  • Achieved native-like performance on resource-constrained 1st-gen iPad, Kindle Fire

Web Developer

Startups & Agencies (including Zootoo, EditVideo, DipStudio, Freelance)
2005 - 2012
  • Developed a diverse range of web applications, including a pet-focused social network, a Ruby on Rails-based video editing platform, and numerous client projects. Optimized site-load performance at Zootoo, led a remote team of contractor engineers. Contributed to a project at DipStudio that won a BBC award following a successful pitch at a competition in Cannes.

Personal Projects

AI Agent Orchestration Workflow

2024 - Ongoing
  • Designed an orchestration AI agent workflow for DeepLearning.AI speed coding competition led by Andrew Ng.
  • Created a template equipped with a prompt engineering workflow for Claude Code to transform simple descriptions into executable PRDs and task lists across specialized sub-agents (Next.js frontend, FastAPI backend, LangGraph workflows), with Neo4j Knowledge Graph for vector storage enabling intelligent context retrieval.
  • Integrated MCPs: Context7 for docs, Playwright for testing, and Sequential-Thinking for planning multi-agent coordination.
  • Implemented TDD for subagent developers with automated testing workflows and GitHub CI/CD feedback loops that parse PR comments into agent instructions with file/line references.
  • Optimized context windows for speed and accuracy by maximizing tokens during planning phase while minimizing context during development phase for subagents. Leveraging Claude's Sonnet + Opus based on task complexity and compute costs.

Lunata: AI-Powered Astrology Platform

2024 - Ongoing
  • Working on an AI application that generates highly personalized, narrative-style astrology reports based on natal charts and moon transitions.
  • Tech stack: LangChain/LangGraph, Google Vertex AI, ChromaDB, FastAPI, Python.

Ethereum/Bitcoin HFT Bot

2016
  • Architected an algorithmic high-frequency trading system in Python for the Ethereum/Bitcoin markets.
  • Implemented trading strategies utilizing RSI and SMA indicators to generate automated trading signals.
  • Built backtesting to validate and refine strategy performance.

Dgrees iOS Application

2014
  • Achieved 100,000+ downloads for a Celsius/Fahrenheit converter app built with PhoneGap.
  • Designed and developed a learning game that received excellent user reviews for its intuitive UX.