Senior Data Scientist — PostgreSQL & Data Architecture

Nysonian; Islamabad; On-site; PKR 3,000,000 - 5,200,000; Full time

Job summary

Nysonian is seeking a Senior Data Scientist to strengthen our data environment across Operations, Finance, Marketing, Sales, Customer Support, eCommerce, and Travel Technology. This role focuses on data architecture, governance, and scalable data pipelines to support analytics and ML initiatives.

The candidate will own PostgreSQL schemas, coordinate integrations with MongoDB, Supabase, Firebase, and AWS services, and establish company-wide data standards and secure access controls.

Qualifications

• Bachelor’s or Master’s degree in Data Science, Computer Science, Statistics, Mathematics, Engineering, or related field.
• At least five years of professional experience in data science, analytics engineering, data engineering, or data architecture.
• Advanced proficiency in PostgreSQL and SQL.
• Strong proficiency in Python for data processing, analysis, automation, and modelling.
• Experience building and maintaining production-grade ETL/ELT pipelines.
• Experience establishing data-governance, lineage, access-control, and quality-management processes.

Responsibilities

• Take ownership of the structure, integrity, and optimization of the company’s primary PostgreSQL database.
• Assess and document the existing architecture, database schemas, integrations, dependencies, and data flows.
• Design scalable PostgreSQL schemas, tables, views, materialized views, indexes, and analytical data models.
• Review and improve database performance through query optimization, indexing, partitioning, and appropriate data-modelling practices.
• Establish PostgreSQL as the governed source of truth for approved business entities and metrics.
• Design reusable datasets that can support reporting, BI, automation, experimentation, and ML use cases.

Skills

PostgreSQL

SQL

Python

ETL/ELT

Data modeling

Data governance

Stakeholder management

Analytics

Machine learning (ML)

Education

Bachelor’s or Master’s in Data Science / CS / Statistics

Tools

MongoDB

Supabase

Firebase

AWS

Job description

Nysonian is seeking a Senior Data Scientist to strengthen our data environment across Operations, Finance, Marketing, Sales, Customer Support, eCommerce, and Travel Technology. This role focuses on data architecture, governance, and scalable data pipelines to support analytics and ML initiatives.

The candidate will own PostgreSQL schemas, coordinate integrations with MongoDB, Supabase, Firebase, and AWS services, and establish company-wide data standards and secure access controls.