Vaibhav Aren

Product Engineer

Dublin, County Dublin, Ireland7 yrs 6 mos experience
Most Likely To SwitchHighly Stable

Key Highlights

  • Built DNS caching system for 4.6 million hosts.
  • Scaled fintech platform to 3x data throughput.
  • Mentored over 500 students in open source.
Stackforce AI infers this person is a Backend and Cloud Infrastructure Engineer with expertise in Fintech and Cloud Solutions.

Contact

Skills

Core Skills

AwsSoftware DevelopmentJavaSoftware DesignSoftware Testing

Other Skills

RustKotlinRubyPythonBashTypeScriptSpring BootKafkaJUnitMavenMockitoHystrixHazelcastPrometheusGrafana

About

🚀 Engineer at Heart | Builder at Scale | Open Source Champion Hey there! I’m Vaibhav Aren, a backend and cloud infrastructure engineer who loves building things that don’t break when millions of people use them. With over 7 years of experience across Amazon Web Services, Bright Money, BrowserStack, and more, I’ve engineered systems that are fast, resilient, and battle-tested in production. At AWS, I built a DNS caching system deployed on 4.6 million+ bare-metal hosts, slashing latency and boosting performance across the board. At Bright Money, I helped scale a fintech platform to 3x data throughput — all while keeping uptime at a rock-solid 99.9%. Whether it’s Java, Python, or Rust, I’m all about clean code, smart architecture, and shipping with confidence. 💡 Beyond the job, I’ve mentored 500+ students through Google Summer of Code and The Linux Foundation, helping the next generation of devs get their hands dirty with real-world projects. What gets me excited? Big engineering challenges, massive scale, and working with people who care deeply about their craft. If you're building something ambitious. Let's talk!

Experience

7 yrs 6 mos
Total Experience
1 yr 1 mo
Average Tenure
3 yrs 6 mos
Current Experience

Amazon web services (aws)

Research And Development Engineer

Nov 2022Present · 3 yrs 6 mos · Ireland · On-site

  • Developed a scalable caching mechanism deployed across ~4.6 million baremetal hosts, significantly improving latency and efficiency.
  • Contributed to migrating Internal DNS architecture to a native AWS solution using AWS CDK, ensuring global scalability and maintainability.
  • Designed and implemented an A/B testing framework to replay real-world network traffic, enabling robust backend performance testing.
  • Engineered a Highly Available Canary Service, boosting observability for the DNS Backend VIPS for the dataplane team, which was subsequently adopted by multiple AWS teams.
  • Tech Stack: Rust, Java, Kotlin, Ruby, Python, Bash, TypeScript, AWS
RustJavaKotlinRubyPythonBash+3

Bright money

Senior Software Engineer

Dec 2020Oct 2022 · 1 yr 10 mos

  • Founding engineer responsible for designing and building the core backend architecture powering multiple critical micro-services including:
  • User Service, Notification System, Gateway Service, Firestore Service, Analytics Service, Attribution Engine,
  • Kafka Producer/Consumer, Auth Service
  • Spearheaded the Bright Credit Banking Service, enabling seamless multi-tenant integrations with third-party providers like Fincity, CapOne, and Plaid.
  • Designed and developed a Fanout Event Management and marketing service which enabled integration with Meta Ads, Google Tag Manger, Snapchat and TikTok.
  • ⚙️ Scalability & Performance:
  • Introduced multi-threaded processing using ThreadPoolExecutor, increasing account data processing throughput from 4K to 12K (200% improvement).
  • Resolved production OutOfMemoryErrors in a Java Spring Boot application using JVM heap dumps and Java Flight Recorder, eliminating recurring downtime.
  • 🛡️ Reliability & Fault Tolerance:
  • Integrated Hystrix for circuit breaking and fallback mechanisms, modernizing legacy infrastructure and improving system resilience.
  • 🚀 Latency Optimization:
  • Designed and implemented a Hazelcast-based caching layer for the User Microservice, reducing latency by 74% across all dependent services.
  • 🔍 Observability:
  • Built highly observable services using New Relic, Grafana, and Prometheus, improving issue triaging and system insights.
  • 🧪 Development Excellence:
  • Delivered end-to-end development of Bright Credit Banking Service V2 following Test-Driven Development (TDD) and clean code principles.
  • Tech Stack: Java 8 · Spring Boot · Kafka · JUnit · Maven · Mockito · Hystrix · Hazelcast · Prometheus · Grafana · New Relic · Python · Django · Kafka · Event Driven Architecture
JavaSpring BootKafkaJUnitMavenMockito+8

Percy

Software Engineer

Oct 2020Nov 2020 · 1 mo

  • Part of VRT team
  • Bringing Visual Testing to Edge Browser on Percy

The linux foundation

Mentor

May 2020Dec 2020 · 7 mos · Remote

  • Profile:-
  • [1] https://people.communitybridge.org/mentor/843d4d48-14fd-47f9-b436-b8d3a9ac4978
  • Project:-
  • [2] https://people.communitybridge.org/project/7deb8e48-6797-4115-bb96-9cf4ccee022e

Browserstack

Software Engineer

Apr 2020Nov 2020 · 7 mos

  • 10X SDE solving real problems with the smartest people around the world :)
PagerDutyGrafanaPrometheus.ioMetricsRuby on RailsPython+1

Codeuino

3 roles

Google Summer of Code Mentor

Feb 2020Aug 2020 · 6 mos

  • Mentored Two projects
  • [1] CODEUINO: Proposal Functionality in Donut
  • https://summerofcode.withgoogle.com/projects/#5699498812112896
  • [2] CODEUINO: Development of Admin Management mechanism for DONUT
  • https://summerofcode.withgoogle.com/projects/#4650148711366656

Google Code in Mentor

Nov 2019Jan 2020 · 2 mos

  • Prepare students to immediately start writing code at the official start of coding.
  • Get students engaged socially in the project.
  • Provide time for students to learn about the development practices of the organization.
  • Ensure that students have a development environment set up. This includes getting set up with the project version control system and reading up on necessary documentation.
  • Further, refine the strategic plan for project completion.
  • Help student with code in NodeJS, VueJS, MongoDB in two of the main projects CodeBadge and Donut .

Founding Partner@Tech

May 2018May 2021 · 3 yrs

  • www.codeuino.org
  • GSOC, GCI, Design Initiative, Mentoring the next-gen.
  • Reachout at support@codeuino.org

Sugar labs

Google Summer Of Code Mentor

Feb 2020Oct 2020 · 8 mos

  • Mentored two projects
  • [1] https://summerofcode.withgoogle.com/projects/#5770643250872320
  • The aim of Music Blocks is to teach beginners how to program, using a snap-together block-based structure. The purpose of this project is to develop a feature to export any block stack of Music Blocks programs to the equivalent JavaScript code.
  • This is meant to help guide beginner programmers who have so far only programmed using Music Blocks or similar applications; the idea is that by being able to compare the block stacks and their JavaScript equivalent, they will graduate to more expressive and conventional text-based programming languages (like JavaScript).
  • The feature would provide a template code exhibiting a familiar behavior, and give the users an ability to play around the JavaScript code while making observations, rather than having to learn it from scratch.
  • [2] https://summerofcode.withgoogle.com/projects/#6367628337086464
  • MusicBlocks has a lot of issues right now and the aim of this repository is to fix these issues efficiently while keeping it easily maintainable in the future. Currently there are 200+ issues in this repository .The goal of this project is to resolve most of the bugs and issues and at the same time work on some major enhancements.

Google

Google Code in Mentor

Nov 2019Jan 2020 · 2 mos · Remote

  • http://wiki.sugarlabs.org/go/Google_Code_In_2019
  • We had 563 tasks completed by 306 students. (Over 500 students participated.)
  • A good deal of progress was made on the conversion of Sugar to Python3, Music Blocks enhancements, and improvements to Sugarizer. Some fun new activities were added as well.
Google Cloud Platform (GCP)

Acko

Backend Software Engineer

Sep 2019Apr 2020 · 7 mos · Bengaluru, Karnataka

  • Insurance transactions such as Policy issuance, endorsements, claims, etc. generate financial data which is critical to be reported to General Ledger. This requires the core systems to be integrated with the GL system and also pass on critical data such as GST information, LOB details,
  • commission details, TDS information, etc. to General Ledger
  • Technologies Used: Java-Springboot, AWS, PostgresSQL, Redis, Docker.

Sugar labs

Google Summer Of Code Mentor

Apr 2019Sep 2019 · 5 mos · Remote

  • https://musicblocks.sugarlabs.org/
  • https://github.com/sugarlabs/GSoC/blob/master/Ideas-2019.md

Meetnotes

Full Stack Engineer

Mar 2019Apr 2020 · 1 yr 1 mo · San Ramon, California, United States

  • Full-Stack Developer
  • Project: Meet notes
  • Worked on Python Django backend created Restful API using DRF. Migrated backend codebase from python 2 to 3. Worked on Celery, Optimised SQL indexes, and email service. Rectified errors in codebase by studying the log stash from Kibana. Added an improved mechanism for error handling by Context Manager classes.
  • Frontend: Build a Dashboard in ReactJS for ActionItems
  • Mobile: Worked on the release of new flutter IOS and Android App.
  • Testing: Wrote Unit, Integration, Selenium and LoadTest for the Application

Hashedin

Software Developer

Feb 2019Apr 2020 · 1 yr 2 mos · Bengaluru Area, India

  • Full Stack Developer
  • Project: Meetnotes
  • Project: Acko Tech

Jboss

Google Summer of Code Mentor

Jan 2019Sep 2019 · 8 mos

  • Development of 16 modules for the DONUT platform for better UI/UX. To simplify the configuration, these predefined modules will have the most common use cases with different options for modules and settings while setting up this environment. These modules will be more focusing on providing the user a smooth experience while using DONUT platform.

Sugar labs

Google Code-In Mentor

Oct 2018Dec 2018 · 2 mos

  • Interacted and guided on 559 tasks which were completed by 248 students.
  • Learned management skills as well as open Source workflow and improved communication skills .

Google

Google Summer Of Code Student Developer,Sugar Labs

May 2018Aug 2018 · 3 mos

  • The primary aim of the project is to make Interactive Tutorial Exercises for Turtleblocks, making it more attractive and creating a definite pathway for ‘Learning to program in turtleblocks’. There are guides and examples present on the planet server to introduce the user to Turtleblocks but the unique factor about this project is that there are no media which provide fun checkpoint based exercises for Turtleblocks which will give users a fun experience in completing levels along with teaching them Computer Science Concepts and at the same time promoting mathematical, computational and logical thinking by asking them to solve different challenges.

Education

Jaypee Institute Of Information Technology

Bachelor of Technology - BTech — IT

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