Arvind Mehra
Software Developer, Team Player, Leader, and Mentor
Arvind Mehra
About Me
Hi there! I am a Polyglot Software developer, collaborative team player and leader, with over 10 years of experience in crafting high-quality software using Rails, Python and React.
I have worked with big techs, including BloomandWild, Smart Pension London, Tata Consultancy Services,
McKinsey & Company, Appster.
My area of interest in programming is to scale and optimise the application.
I'm currently working as a Senior Software Developer at Bloom and Wild Ltd, in London, UK.
- Location London, UK
- Email bloomberg490@gmail.com
- LinkdedIn
- Github
- Is Ruby On Rails Dead?
Resume
Experience
Jul 2024 - Current
Bloom and Wild, London, UKSenior Software Developer
Designed and implemented an event-driven cache refresh strategy to improve API response times, data freshness, and overall system performance.
Migrated delivery status updates from a polling-based architecture to a webhook-driven model across multiple carriers, enabling near real-time delivery updates and reducing system load.
Introduced consistent logging standards and service-level metrics in Datadog to improve observability and proactive monitoring.
Refactored critical areas of a large Rails monolith to reduce technical debt and improve long-term scalability and maintainability.
Increased automated test coverage across business-critical workflows using RSpec, improving release confidence and reducing regression risk.
Developed lightweight internal backend services and automation tools using Python and FastAPI to support operational workflows and integrations.
Provided production support during peak trading periods, ensuring platform stability and rapid incident resolution.
Nov 2021 - Apr 2024
Smart Pension, London, UKSoftware Developer
Designed and delivered pension withdrawal and customer lifecycle features within a regulated fintech environment.
Built and maintained automated test suites using RSpec and Cypress to improve release quality and deployment confidence.
Acted as production support engineer, resolving P1 and PX incidents within SLA through deep system and infrastructure understanding.
Mentored junior engineers, conducted code reviews, and contributed to hiring decisions to improve overall engineering quality.
Contributed to user-facing features and frontend improvements using ReactJS.
Dec 2018 - Oct 2021
Tata Consultancy Services, Gurugram, IndiaSoftware Developer
Improved the performance of an employee timesheet platform by optimising complex SQL queries and implementing caching strategies.
Built a microservice in Python, FastAPI, for internal use.
Led a successful migration of a legacy Rails application from Rails 3 to Rails 5 with near-zero production defects.
Led a team of four engineers to deliver a proof-of-concept internal tool from design through implementation.
Consolidated obsolete services into a unified platform, simplifying maintenance and improving operational efficiency.
Feb 2016 - Nov 2018
Appster, Gurugram, IndiaRuby on Rails Developer
Designed and implemented REST APIs for iOS and Android applications.
Optimised and enhanced performance across multiple Rails applications.
Delivered multiple client projects as the sole Ruby on Rails developer while maintaining high client satisfaction.
Education
2008-2012
Rajasthan Technical University, IndiaShankara Institue of Technology
Bachelor of Technology in Computer Science
Meetups
2023
LondonLondon Ruby User Group
Redis Memory First Meetup
Skills
- Ruby on Rails
- ReactJS
- Python
- Redis
- AWS
- PostgreSQL
- Datadog
- Agile Workflows
- Ruby
- FastAPI
- Django
- Git
- Hotwire
- Rspec
- RESTful APIs
- Continuous Integration