Karun 👨🏽‍💻

Senior Software Engineer

London, England, United Kingdom8 yrs 7 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Stackforce AI infers this person is a Backend Engineer with expertise in Fintech and SaaS solutions.

RubyAwsJavaSaasPostgresqlRuby On Rails

AlgorithmsAmazon Web Services (AWS)BDDBackendCamundaCucumberData StructuresDockerGitGoJavaScriptKubernetesMachine LearningMicroservicesPython

2 roles

Promoted

Mar 2024 – Present · 2 yrs · London, England, United Kingdom

May 2022 – Mar 2024 · 1 yr 10 mos · London, England, United Kingdom

Built and maintained high throughput Dynamic Rider Pricing Systems using Go and Ruby. These systems, deployed on AWS EC2, calculate rider fees based on machine learning models stored in S3, processing up to 500 requests per second with low latency. One of the core backend layers running Deliveroo.
Leading various system improvements as Deliveroo scales, including integer migrations across systems, defining peak traffic system readiness guidelines, coordinating with MLEs to define SLOs for ML models as well as authoring TDDs, mentoring and onboarding and participating in on-call activities.

GoRubyAWSMachine LearningTDD

Sep 2020 – Apr 2022 · 1 yr 7 mos · London, England, United Kingdom

Played a key role in developing a Clinical Workflow Engine using Camunda and Java, which automated the creation of hundreds of tailored clinical workflows. The platform was offered as a service (SaaS) to healthcare providers in the US, UK, and Canadian markets, including Babylon.
Enabled weekly releases by significantly reducing manual testing processes through automated BDD testing with Cucumber for Java services. Trained and onboarded testers to the framework, empowering them to write automated tests independently instead of relying on manual test cases.

JavaCamundaBDDCucumberSaaS

Jun 2019 – Sep 2020 · 1 yr 3 mos · Bengaluru, Karnataka, India

Backend engineer at GO-PAY, one of the biggest South East Asian digital wallet platforms
Built the GO-PAY Checkout Integration SDK to enable external merchants to accept GO-PAY wallet payments. On- boarded several merchants for the Indonesian market to the GO-PAY Checkout Flow.
Architected a Highly Available PostgreSQL infrastructure based on Patroni. Migrated key services to new infrastructure, giving the benefit of automated database failovers and reduced downtimes.
Designed and built a Scheduler (Cron as a Service) for processing high volume requests while ensuring reliable delivery and fault tolerant execution. Was used to send bill payment reminders for GO-PAY wallet users.
Technology Stack : Java, Go, PostgreSQL, REST, gRPC, Protocol Buffers, Apache Kafka, Consul, Envoy Proxy, Microservices Architecture, Kubernetes

JavaGoPostgreSQLMicroservicesKubernetes

Jun 2017 – May 2019 · 1 yr 11 mos · Bengaluru, Karnataka, India

qplum is an AI driven wealth management firm that delivers financial advice and portfolio management through a digital first platform.
Built and managed product backend for the Qplum Robo-Advisor along with associated microservices
Designed and built Asynchronous Broker Interaction Framework to interact with 6 financial brokerages via APIs, ensuring asynchronous communication and system fault tolerance
Built Internal Support Toolkit to provide a consolidated view of entire system.Tool used to monitor trading activity for each user, track, cancel or retry ongoing user requests. Used by 4 different teams to manage assets worth $80 million
Technology stack: Ruby on Rails, Rspec, Python, Javascript, AngularJS, AWS, Redis, Sidekiq, Docker, REST API

Ruby on RailsPythonJavaScriptAWSRedisDocker