Backend Engineer

About Growtrics Growtrics is an AI-powered EdTech company building an adaptive learning platform that helps students master Mathematics and Science through personalised, interactive, and deeply engaging experiences. We combine cutting-edge AI models, multimodal learning, and delightful product design to deliver a new category of learning outcomes.

We are expanding our backend and AI infrastructure capabilities, and are looking for an exceptional Backend Engineer who can build production-grade OCR + LLM multi-agent systems to power our automated question extraction and grading pipelines.

Role Overview

As a Backend Engineer at Growtrics, you will design and implement a multi-agent Python pipeline that converts unstructured exam papers (PDFs) into structured question-answer schemas consumable by our student app. You will work with FastAPI, LLMs, OCR/Vision models, LangChain-like agent frameworks, and scalable cloud infrastructure.

This role sits at the intersection of GenAI engineering, backend systems design, and EdTech product development.

Key Responsibilities:

Backend Engineering (FastAPI & Pipeline Architecture);

• Design and implement a modular, multi-stage Python pipeline for OCR, content extraction, parsing, and structuring exam questions.
• Own and productionise FastAPI microservices that interact with LLMs, OCR engines, and internal data stores.
• Build robust logging, monitoring, and cost-tracking systems for all agents/stages.

GenAI, LLMs, Multi-Agent Systems:

• Build multi-agent orchestration pipelines (e.g., LangChain, LlamaIndex, or custom frameworks).
• Implement LLM-based content structuring, extraction, and reasoning workflows.
• Model and manage agent input/output, reasoning traces, and message schemas.
• Ensure outputs are consistent, structured, and generalizable across diverse exam formats.

OCR + Computer Vision:

• Integrate OCR / Vision models for extraction of text and embedded images from PDFs.
• Handle multimodal processing (text, diagrams, equations, tables).
• Ensure reliable extraction of mathematical notation, diagrams, graph-based questions, etc.

Question Schema & Data Modelling:

• Design scalable schemas representing:
• Questions, sub-questions (parts a/b/c), and answer keys
• Images, diagrams, and mathematical expressions
• Grading metadata supporting LLM-based evaluation
• Ensure output schemas serve both UI rendering & automated grading. 5. Quality, Observability & Reliability
• Implement structured logging for each agent step using datetime-tagged logs.
• Build the monitoring layer to track failure rates, false positives, and pipeline health.
• Implement automated testing for multi-stage pipelines.

Technical Requirements:

Core Skills:

• Strong proficiency in Python 3.9+
• Experience building production microservices using FastAPI
• Deep hands-on experience with LLMs, prompt engineering, and agentic workflows
• Understanding of OCR engines (e.g., Tesseract, PaddleOCR, Vision-Language models like GPT 5, Gemini 3 Pro, Qwen3VL etc.)
• Experience with PDF parsing (e.g., pymupdf, pdfplumber, unstructured)
• Familiarity with LangChain BaseMessage schemas or equivalent custom agent frameworks
• Ability to structure multi-stage pipelines with clean code organisation.

Software Engineering Best Practices:

• Strong in modular design, documentation, and maintainability
• Experience implementing robust logs, monitoring, and analytics
• Familiarity with cloud environments for scaling inference workload
• Experience with CI/CD, unit tests, and integration tests
• Experience working with structured/unstructured data and data modelling

Bonus Skills:

• GenAI vector DBs (Pinecone, Weaviate, Chroma)
• Multi-agent orchestration tools
• Educational content processing or assessment system
• Knowledge of math or science content is a plus (not required) What You Will Build (Example Projects) You will directly contribute to:
• Automated OCR → Question Schema → Answer Key pipelines
• LLM-powered grading systems for handwritten or digital responses
• Multi-agent systems with reasoning trace logging
• Scalability frameworks that enable Growtrics to ingest 10,000+ exam papers across syllabi and countries
• Multimodal processing for diagrams, graphs, and equations

Why you'll love working here:

• Highly competitive compensation package, including 100% salary during probation, designed to reward your talent and dedication.
• 13th-month salary and performance-based bonuses to celebrate your achievements and contributions.
• Comprehensive Social Insurance calculated on gross salary, giving you peace of mind and full legal protection.
• Generous and flexible time-off policy: 14 annual leave days + 6 sick leave days to recharge and maintain work-life balance.
• Flexible working hours allowing you to manage your schedule and work in a way that suits your lifestyle.
• MacBook provided, ensuring you have the tools to perform at your best from day one.
• Full compliance with the Vietnam Labor Code, so you can focus on work with confidence in a fair and lawful environment.
• Opportunity to collaborate directly with global stakeholders, gaining exposure to international best practices and expanding your professional network.
• A workplace that truly values your well-being: regular social events, sports clubs, gym activities, and team-building programs to foster connection and fun.
• Vibrant, youthful, and international culture that encourages creativity, innovation, and continuous growth.
• Fully stocked pantry with a variety of snacks, milk, and beverages to keep you energized throughout the day.
• Recognition and rewards based on your experience, skills, and qualifications, ensuring your contributions are appreciated and fairly compensated.
• Career development and learning opportunities to help you grow personally and professionally in a dynamic, supportive environment.