Software Engineer III - Buyside Services Engineering

Overview

Serve as an individual contributor on the Buyside Services Engineering team, designing, building, enhancing and maintaining products that power FactSet's Portfolio Services and Managed Services business.

What you'll do

• Design and develop complex features, enhancements, and technical solutions across our applications
• Own development activities from technical design through implementation, testing, deployment, and production support
• Collaborate with Product Development to understand business requirements and translate them into scalable and maintainable technical solutions
• Contribute actively to technical design discussions and evaluate solutions for performance, scalability, reliability, and maintainability
• Identify opportunities to improve application performance, stability, scalability, and technical health
• Diagnose and resolve complex production issues, identifying patterns and opportunities for preventative improvements
• Break down larger technical requirements into well-defined development tasks and deliverables
• Work with the Product Development team to prioritize and resolve production and development issues
• Champion engineering best practices through code reviews, automated testing, documentation, and thoughtful technical design
• Share technical knowledge and provide guidance to less-experienced engineers through code reviews, troubleshooting, and day-to-day collaboration

What you'll need

• 3–5 years of hands-on software engineering industry experience
• Strong Python proficiency with a demonstrated track record of building production-grade, client-facing systems
• Strong understanding of Object-Oriented Programming (OOP) principles, software design patterns, and maintainable application architecture
• Proven experience designing and building RESTful APIs and backend services
• Strong JavaScript/TypeScript experience with the ability to build and maintain modern web applications
• Experience with JavaScript-based frontend frameworks such as Vue.js, Angular, or React
• Hands-on experience with frontend and backend testing frameworks such as Jasmine, Karma, Puppeteer, pytest, and unittest
• Strong database design skills with hands-on PostgreSQL experience, including schema design, query optimization, indexing strategies, and relational data models at scale
• Experience working with large datasets using Polars or equivalent dataframe libraries
• Experience implementing caching strategies for query results and metadata
• Experience with service-oriented architectures and developing applications composed of multiple interconnected services
• Ability to troubleshoot complex application and production issues across multiple components
• Experience independently delivering complex technical work while collaborating effectively with Product and Engineering partners
• B.Tech / M.Tech in Computer Science or equivalent educational background

Nice to have

• Practical experience with AWS services including SQS, Lambda, and ECS
• Experience with microservices architecture and distributed systems
• Understanding of failure handling and resiliency across service boundaries
• Experience designing parallel or asynchronous workflows to improve throughput and resource utilization
• Experience working with large-scale data systems and balancing latency, throughput, and cost
• Understanding of multi-tier architectures and orchestration across multiple backend systems
• Experience with rate limiting, throttling, and client quota management
• Experience with D3.js and interactive data visualization
• Experience with graph databases such as Neo4j and graph-based data modelling