Senior Backend Developer – Real-Time Data & AI Platform

Job Description

Title: Senior Backend Developer – Real-Time Data & AI Platform

Company Name: Codixel

Vacancy: --

Age: At least 25 years

Job Location: Anywhere in Bangladesh

Salary: --

Experience:

Published: 2026-06-24

Application Deadline: 2026-07-24

Education:

Requirements:

Skills Required:

Additional Requirements:

• Age At least 25 years

Core Technical Skills

• Strong proficiency in Python (production-level development)

• Deep understanding of data structures and algorithms

• Strong knowledge of backend architecture and distributed systems

• Experience designing and building scalable APIs

• Experience with Git and collaborative development workflows

Senior Developer Mindset

We value engineers who:

• Learn new technologies quickly and independently

• Understand the core concepts behind software systems

• Are comfortable solving problems with limited documentation or guidance

• Think critically about architecture, scalability, and performance

• Are proactive in improving systems and processes

Nice to Have

Experience with the following technologies or concepts is a plus:

Cloud & Infrastructure

• AWS, GCP, or Azure

• Serverless architectures (Lambda, Cloud Functions)

• Message queues and pub/sub systems (SQS, Pub/Sub)

• Object storage and CDN systems

Infrastructure as Code

• AWS CDK

• Terraform

• CloudFormation

• Pulumi

Databases & Search

• Elasticsearch / OpenSearch / Solr

• NoSQL databases (DynamoDB, MongoDB)

AI & Modern Development

• LLM integrations (OpenAI, Claude, Gemini)

• Prompt engineering

• AI-assisted development tools (Copilot, Cursor, Claude Code)

DevOps

• Docker

• CI/CD pipelines

• Automated deployments

Tech Stack

• Languages

• Python 3.12 (Primary)

• TypeScript (Infrastructure)

• Java (API Server)

Cloud

• AWS (Lambda, DynamoDB, SQS/SNS, S3, CloudFront, API Gateway, EC2, ECS)

Infrastructure

• AWS CDK (TypeScript)

Search

• Elasticsearch

AI / LLM

• OpenAI

• Anthropic Claude

• Google Gemini

Media Processing

• WhisperX

• Playwright

• FFmpeg

CI/CD

• GitHub Actions

• AWS CodePipeline

What We Value

Technology evolves rapidly. What matters most is a strong understanding of system fundamentals, including:

• Distributed systems

• Event-driven architectures

• Efficient data structures

• Cloud infrastructure design

We prefer engineers who understand the principles behind the tools, not just the tools themselves.

Project: Earnings Call Platform

Experience Level: Senior Backend Developer

About the Project

We are building a real-time, event-driven platform that automatically discovers, records, transcribes, and publishes earnings call webcasts for publicly traded companies.

The platform processes hundreds of events daily through a complex pipeline, including:

• Financial news scraping

• AI-based event classification

• Browser-based webcast recording

• GPU-accelerated audio transcription

• Full-text search indexing

This system combines distributed systems, AI pipelines, cloud infrastructure, and real-time data processing.

We are looking for a Senior Backend Developer who enjoys solving complex engineering problems and building scalable systems.

Responsibilities

As a Senior Backend Developer, you will:

• Design and build event-driven data pipelines for real-time financial news processing

• Develop and maintain scalable backend services and APIs

• Integrate cloud infrastructure services for compute, storage, messaging, and CDN delivery

• Design data models for document databases and search engines

• Implement AI/LLM integrations for classification, data extraction, and conversational features

• Develop browser automation systems for recording live webcasts

• Build and maintain audio processing and transcription pipelines

• Collaborate with infrastructure and frontend teams to ensure reliable system architecture

• Help improve performance, scalability, and reliability across the platform