Demo

SQL Application Developer

Juno
Philadelphia, PA Full Time
POSTED ON 4/24/2026 CLOSED ON 5/26/2026

What are the responsibilities and job description for the SQL Application Developer position at Juno?

We are seeking a SQL Application Developer to join a fast-paced development team responsible for building and maintaining backend database logic that directly supports customer-facing web applications. This role focuses on SQL Server development, including stored procedures, functions, and performance-optimized query design within a high-volume OLTP environment. This is a hands-on development role where engineers are expected to take ownership of their code from development through deployment, ensuring performance, stability, and reliability in production systems.


Key Responsibilities

  • Design, develop, and maintain SQL Server stored procedures, functions, and database logic
  • Support web-based applications through backend database development and optimization
  • Write efficient, high-performance SQL for high-volume transactional (OLTP) systems
  • Ensure code is optimized for speed, scalability, and production reliability
  • Troubleshoot and resolve performance issues in database queries and stored procedures
  • Collaborate with application developers as part of a sprint-based development team (Dev → QA → Deployment)
  • Take ownership of database code from development through production release
  • Work closely with team members to clarify requirements and deliver production-ready solutions
  • Participate in production support and issue resolution as needed


Required Qualifications

  • Strong experience with Microsoft SQL Server
  • Hands-on development of stored procedures, functions, and SQL-based application logic
  • Experience working in high-volume OLTP environments
  • Strong understanding of query performance tuning and optimization
  • Ability to work in a fast-paced agile/sprint development environment
  • Comfortable working with ambiguous requirements and asking clarifying questions
  • Strong communication skills and ability to collaborate within a development team
  • Demonstrated ability to take ownership of code from development through production


Preferred Qualifications

  • Experience supporting web applications with direct database dependencies
  • Familiarity with indexing strategies and database performance tuning
  • Experience working in Microsoft-based application stacks
  • Background in transactional systems with high-frequency usage
  • Experience working in small to mid-sized development teams with broad ownership responsibilities


Role Environment

  • Agile sprint-based development (Dev → QA → Deployment)
  • SQL Server is the primary database platform
  • Focus on performance-critical application databases (not DBA or reporting work)
  • Code changes require team agreement before production deployment
  • High emphasis on reliability and production stability


What Success Looks Like

  • Fast, reliable SQL code that supports production web applications
  • Minimal performance issues in production environments
  • Ability to quickly understand requirements and deliver working solutions
  • Strong collaboration with application developers and QA teams
  • Ownership mindset: developers are responsible for the code they write end-to-end


Juno is an Equal Opportunity Employer that provides equal opportunities to all employees and applicants for employment without regard to race, color, religion, sex, sexual orientation, gender identity, age, national origin, disability, genetic predisposition or carrier status, or any other characteristic protected by federal, state or local law. The Company is committed to this policy with respect to recruitment, hiring, placement, promotion, transfer, training, compensation, benefits, employee activities and general treatment during employment. It’s expected that all employees are aware of this policy and that they create an environment that’s sensitive and respectful to all individuals.

Salary : $100,000 - $140,000

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