ABHISHEK KUMAR

Results-driven Ruby on Rails engineer with over 5.9 years of experience in architecting and delivering scalable backend systems across diverse domains, including membership, rewards, and e-commerce platforms. Demonstrated leadership in guiding development teams at Bounteous to design high-performance APIs, seamlessly integrate complex third-party platforms like Paytronix, and optimize large-scale applications for enhanced reliability and performance. Expertise includes payment integration, real-time communication, and cloud deployment on AWS, with a strong commitment to mentoring teams and ensuring successful end-to-end project delivery from design to production. Passionate about leveraging technical skills to drive innovation and efficiency in software development.

• Backend Development Leadership
• Led backend development for high-traffic applications using Ruby on Rails, integrating payment gateways and others third party apis seamlessly.
• Application Performance Enhancement
• Enhanced application performance for clients’ e-commerce platforms through optimization and cloud deployment on AWS EC2.

• Backend Architecture & Development: Ruby on Rails, API design, scalable systems, microservices concepts
• Payment & Third-Party Integrations: Paytronix, Stripe, payment gateways, OAuth, RESTful APIs
• Database & Data Management: MySQL, PostgreSQL, Elasticsearch, query optimization, data modeling
• Real-Time & Messaging Systems: Twilio, WebSockets, real-time notifications
• Cloud & DevOps: AWS (EC2, S3), deployment automation, CI/CD pipelines
• Team Leadership & Agile Practices: Leading backend teams, mentoring, sprint planning, code review, TDD/BDD
• User-Centric & Performance-Focused Design: API reliability, scalable architecture, user experience for web & mobile

10. Blue Bottle Coffee | 01/03/2025 – Present Role: Backend Lead / API Developer | Team Size: 5

• Developed backend features for membership, rewards, and gifting flows.
• Integrated Paytronix API for points accrual, reward redemption, and discounts.
• Designed secure and scalable APIs for web and mobile applications. Description: Platform for seamless coffee ordering, membership management, and customer rewards. Link: Blue Bottle Coffee

9. Fashion Aggregator | 04/2024 – Present Role: Backend Lead / API Developer | Team Size: 4

• Led development of fashion shopping platform.
• Designed APIs for mobile applications and managed backend team. Description: India’s largest e-commerce store for fashion and lifestyle products.

8. Grind & Pound | 01/2024 – 11/2024 Role: Backend Lead | Team Size: 4

• Developed secure payment systems and backend APIs.
• Managed backend team for e-commerce application. Description: E-commerce platform for Indian staples ensuring freshness and quality. Link: Grind & Pound

7. EtOH Coach | 10/2022 – 01/2024 Role: Backend Lead / API Developer | Team Size: 10

• Led backend and API development, implemented payment integrations.
• Designed adaptive learning features using spaced repetition and active recall. Description: Platform for microlearning in wine, beer, and spirits certifications. Link: EtOH Coach

6. W-Energy Software | 06/2022 – 04/2023 Role: Backend Developer | Team Size: 22

• Developed transportation module in cloud-based accounting software.
• Collaborated in a large cross-functional team. Description: Cloud-based solutions for the oil and gas industry. Link: W-Energy Software

5. LocoNav | 12/2021 – 06/2022 Role: Backend Developer | Team Size: 2

• Developed backend for GPS tracking and fleet management.
• Implemented alert modules and reporting features. Description: Democratizing fleet technology for commercial vehicles. Link: LocoNav

4. Jana | 12/2021 Role: Backend Lead | Team Size: 4

• Created APIs for user and vendor applications.
• Managed team delivery of multi-service platform. Description: Comprehensive platform for hotels, shops, medicines, gifts, and pick & drop services (Android & iOS).

3. Hire Handies | 11/2020 – 09/2021 Role: Backend Developer / Team Lead | Team Size: 4

• Developed backend for on-demand services.
• Integrated Elasticsearch and Twilio for real-time communication. Description: Platform connecting individuals needing local task assistance. Link: Hire Handies

2. Bumpp (E-card Application) | 07/2020 – 11/2020 Role: Backend Lead | Team Size: 3

• Led backend development and implemented QR code sharing features.
• Enabled seamless digital business card sharing. Description: Platform for networking via digital business cards. Link: Bumpp

1. Devfresco Grocery Application | 03/2020 – 06/2020 Role: Backend Developer / Team Lead | Team Size: 4

• Developed backend and admin panel for grocery ordering application.
• Integrated multiple payment methods (online & COD).
• Managed order scheduling and delivery slot features. Description: Users could order groceries anytime with flexible payment options.