Streamlit Developer/Jr Data Scientist

D Square Consulting Services Pvt Ltd · India

JD – Streamlit Developer / Jr. Data Scientist  

Experience: 2+ Years  

Work Mode: On-site  

Location: Bangalore  

Job Summary  

We are looking for a Streamlit Developer / Jr. Data Scientist with strong experience in Python, SQL, Snowflake, and Streamlit to support the development and maintenance of internal business applications. The role will focus on building multi-page Streamlit applications, developing interactive data components, writing and optimizing SQL queries against Snowflake, integrating data science model outputs into user-friendly applications, deploying applications across environments, and troubleshooting production issues.  

Must-Have Skills  

• 2+ years of professional experience building data applications using Python.  
• Strong hands-on experience with Streamlit and the ability to independently build and structure Streamlit applications.  
• Strong SQL skills, including joins, window functions, and aggregations over large tables.  
• Hands-on experience with Snowflake.  
• Strong experience with the Python data stack, particularly pandas.  
• Experience building multi-page Streamlit applications.  
• Experience developing interactive data tables, editable inputs, pivot views, timeframe selectors, and metric cards.  
• Understanding of Streamlit session state, caching, layout, and application performance.  
• Experience deploying and migrating Streamlit applications across environments.  
• Experience debugging production issues related to serialization, caching, session state, and performance.  
• Experience with Git and standard code review practices.  
• Ability to work independently from written requirements and effectively communicate when requirements need clarification.  

Good-to-Have Skills  

• Experience with PySpark.  
• Experience working with Databricks.  
• Experience with e-commerce, retail, or CPG data.  
• Experience demoing applications to non-technical business stakeholders.  
• Experience working closely with Data Scientists to integrate model outputs into business applications.  

Key Responsibilities  

• Build and maintain multi-page Streamlit applications used by internal business teams.  
• Develop application pages, tables, filters, charts, and interactive calculators on top of Snowflake data.  
• Write SQL queries against Snowflake to power application views and optimize queries for improved page performance.  
• Build interactive components such as filterable data tables, editable inputs that trigger recalculation, pivot views, custom timeframe selectors, and metric cards.  
• Work closely with Data Scientists to transform model outputs into intuitive and user-friendly applications for non-technical stakeholders.  
• Deploy and migrate Streamlit applications across different environments.  
• Debug and resolve production issues, including serialization errors, caching behavior, session state issues, and performance challenges with large result sets.  
• Apply appropriate Streamlit session state and caching techniques to ensure reliable application behavior.  
• Participate in Git-based development and standard code review processes.  
• Work from written requirements with minimal supervision and proactively communicate any gaps or concerns in requirements.  
• Support application enhancements and maintenance based on business user needs.  

Qualification  

• Bachelor's degree in Computer Science, Information Technology, Data Science, Engineering, or a related discipline.  
• Professional experience in Python-based data application development is required.  
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