JUSTIAN KELLY
Long Valley,NJ
Summary
Seasoned Senior Technical / Developer Lead with nearly 20 years of expertise in designing, developing, and managing on-premise, cloud, and hybrid applications for both public and private companies in consumer-facing industries. Detailed experience in ecommerce, sales systems, inventory management, and operations-focused business applications and databases, with a proven track record of thriving in fast-paced development environments.
Skilled in overseeing technical resources, mentoring team members, and fostering collaboration to deliver projects on time and within budget. Hands-on experience, combined with a strong foundation in coding principles, agile methodologies, and problem-solving, ensures practical and effective solutions. Known for building strong relationships with diverse stakeholders, align technical solutions with business objectives to drive impactful results. I look forward to leveraging my skills/style in future roles with more responsibility.
Overview
20
20
years of professional experience
Work History
Senior Developer
Party City
04.2019 - Current
- For this $2B public consumer retail company (with over 1000 retail locations), designed, developed, and optimized high-performance, low-latency cloud APIs to enable seamless e-commerce integration, including real-time store inventory checks, delivery scheduling, curbside pickup, ship-from-store, and buy-online-pickup-in-store (BOPIS) functionalities, enhancing operational efficiency and customer satisfaction.
- Developed business-critical delivery engine APIs to determine nearest store to customer’s address, integrating with multiple delivery vendors to ensure seamless order fulfillment. The engine employed failover mechanism, sequentially attempting vendors until successful, and processed vendor webhooks to enable real-time delivery tracking for both customers and stores. These APIs played key role in e-commerce operations, contributing to 30% sales growth.
- Developed and maintained business-essential store-facing applications, including balloon and Holiday apps, order management tools for picking orders, scheduling and canceling orders, item locator, transfer systems, and hourly sales dashboards. These applications were critical to daily store operations, enabling seamless workflows, efficient order processing, and real-time data access.
- Developed secure applications by enforcing strong encryption standards, including SHA-256 salt and key encryption, implementing robust authorization mechanisms, integrating LDAP and IDM for user authentication, and leveraging AWS WAF for application-layer protection and AWS GuardDuty for continuous threat detection and monitoring
- Architect and implement scalable microservices using cloud-native technologies and serverless computing platforms
- Developed reusable code libraries that streamlined development efforts and improved consistency in software architecture across multiple projects.
- Established clear communication channels between stakeholders, facilitating better decision-making throughout project lifecycles.
- Optimized database structures, resulting in faster query processing times and improved data integrity.
- Set clear goals for project milestones, keeping development efforts on track toward timely completion dates with desired outcomes achieved consistently across releases.
- Mentored junior developers, promoting a culture of continuous learning and knowledge sharing within the team.
- Managed software versioning using Git, enabling smooth collaboration among team members while maintaining detailed change records for future reference.
- Implemented rigorous testing strategies, contributing to a significant reduction in reported bugs during deployment phases.
OMNICHANNEL DEVELOPER
Party City
02.2015 - 04.2019
- Played a pivotal role on the Omnichannel team, leading the development, deployment, and ongoing support of mission-critical applications serving over 1,000 retail locations and the e-commerce platform.
- Developed an end-to-end process for retrieving pending print tickets for store orders using a .NET batch process at the store level. The process called an API built in AWS to pull pending tickets from AWS S3, enabling sub-second ticket printing on thermal printers at store locations. The print tickets provided essential order details, including item pickup instructions and customer/delivery times, ensuring efficient in-store order fulfillment.
- Developed various Halloween apps to support stores during the peak sales season, including a Halloween picture wall app that allowed customers to view costumes while displaying real-time stock availability. Sales associates could print costume details and customer names for efficient order fulfillment. Additionally, built a pick-and-fill app to streamline merchandise retrieval, ensuring timely availability of items on the sales floor.
- Developed a .NET customer-facing self-service kiosk for custom invitations, banners, and balloon orders, boosting in-store sales, and designed a Media Dashboard for the executive team, showcasing live feeds from e-commerce, email campaigns, mobile apps, and in-store platforms to ensure consistent messaging across all channels.
- Debugged complex software issues, conducted field testing, and delivered stable product releases.
- Gathered client requirements, translated them into technical specifications, and estimated work hours using Scrum methodology to ensure timely project delivery.
- Adapted to new technologies and programming languages, contributing to increased team productivity and innovation.
APPLICATION ANALYST/DEVELOPER
The Children's Place
01.2006 - 12.2014
- For this $1.6B public costumer retail company (with over 1000 retail locations including acquisition of The Disney Store), contributed to all phases of the Software Development Life Cycle (SDLC) for store and corporate processes, developed and enhancing mission-critical systems like the Coupon Management System, Loyalty CRM, Store Transfer Systems, and Vertex Tax System.
- Led the development of the Loyalty System, including backend processes for point calculation and real-time/batch updates, as well as a ASP.NET web application for customer account and coupon management used by Customer Service teams.
- Designed and implemented .NET Windows applications deployed to 1,100+ stores, including a custom tax system with real-time updates and support for complex tax rules.
- Played a key role in the company-wide transition to SAP, modernizing VB6 Back office applications into .NET solutions and integrating mobile scanners with new SAP data feeds.
- Developed an end-to-end solution for hourly sales and metrics tracking, creating data feeds from 1,100+ stores and an ASP.NET web application for real-time multi-level visibility for executives.
- Collaborated with cross-functional teams to ensure seamless application integration and improve business processes, while consistently delivering custom solutions to meet unique business requirements.
Education
The Chubb Institute - Web Development and Computer Programming
The Chubb Institute
Parsippany, NJ06-2001
Associate of Arts - Liberal Arts (computers)
County College of Morris
Randolph, NJ06.1999
Skills
Languages & Frameworks: PHP, C# / NET, ASPNET Core, Javascript, jQuery, HTML/CSS, SQL
Technologies: AWS (EC2, Lambda, S3, MSK, RDS, Aurora), Kafka, MySQL, Oracle, SQL Server, IIS, Rest API, Git, JIRA
Certification
AWS Certified Cloud Practitioner (CCP) - Jan 2025
Timeline
Senior Developer
Party City
04.2019 - Current
OMNICHANNEL DEVELOPER
Party City
02.2015 - 04.2019
APPLICATION ANALYST/DEVELOPER
The Children's Place
01.2006 - 12.2014
The Chubb Institute - Web Development and Computer Programming
The Chubb Institute
Associate of Arts - Liberal Arts (computers)
County College of Morris