--- title: "Calan Pereira - Senior Backend Engineer in Bengaluru | Tal" description: "Meet Calan Pereira, Software Engineer @ Arcana based in Bengaluru. AI stack includes anthropic apis, claude code, and claude. Explore public work links including github and codeforces." image: "https://tal.club/meet/calan-pereira/share-image" --- # Calan Pereira on Tal ## Headline Software Engineer @ Arcana ## Location Bengaluru ## AI stack anthropic apis claude code claude codex cursor ## Work experience Senior Backend Engineer at Arcana, Jul 2026 \- Present · 2 mos, Bengaluru, Building high scale ETLs pipelines for portfolio analytics SDE\-2 at Zeta, Jan 2025 \- Jun 2026 · 1 yr 6 mos, Bengaluru, Designed and built the backend for a collections management service to recover payments from delinquent users; implemented optimistic locking and developed a custom operator for configuration management\. • Designed and Developed K8’s custom operator from scratch to enable elastic search index and template, by writing a custom Kind and reconciling logic for it\. • Designed and develpoed credit card upgradation feature \[eg\. move from regalia to infinia\] • Designed and developed ETL for elastic search previously done via in\-house tool, moved it to Kafka connect ,which now handles about 20k events per second ingestion capacity\. \[at most once delivery to at least once delivery\] • Implemented Pesimistic locking and saga pattern to solve an inconsistency issue \[distributed transaction\], to make it eventually consistent • Optimised 2 legacy micro services that caused OOM’s due to memory leaks, the G1GC moved all objects to old generation rapidly due to memory leak due to a version incompatibility of protobuff used in our sidecars for logging\. SDE\-1 at Zeta, Jan 2024 \- Dec 2024 · 1 yr, India, Managing a Whole Microservice end to end \* Fine tuned Fork Join Pool threads to achieve optimal multi threading processing \* Developed an Event driven system architecture and implemented it \* Implemented and integrated Elastic Search for searching account holders using any filters present in the nested json payload efficiently \* Integration of temporal framework for Bundle management \(A service which calls many micro services such as card life cycle, customer life cyle , loan life cycle , cupons \.\.\.\) \* Added functionalites for customer life cycle managment such as statuses wich is an even driven feature that marks the account holder bankrupt or deceased and much more \* Worked on optimizing the db queries to withstand huge loads \* Re wrote the service to modularize the code and write cleaner and shorted code with refactoring and re versioning api's \* Resloved many critical bugs on updating account holders and puclishing the events over khafka \* Migrating an Internal Framework with data to java springboot with end to end testing\. \* On call support for incidents raised\. \* Built api's that were used in down stream services via pub sub\. \* Load testing the apis and reducing latency to withstand upto 20k hits per second\. \* API documentation and swagger support for the team\. \* Deployed featuers specific to zones\. \* Query Optimization to reduce latency of migrated api's\. Tech Lead at Point Blank, Jan 2020 \- Jun 2023 · 3 yrs 6 mos, Karnataka, India, \* Trained several Juniors and peers to do competitive programing \* Lead 3 different teams and cleared ICPC regionals\. \* Conducted Over 3 major coding events including authoring of the problems with over 2k participants live\. \* Conducted 20\+ iterations of coding contests \* Conducted sessions on competitve programming ## Education Bachelor of Engineering \- BE, Computer Science, Dayananda Sagar College of Engineering, BANGALORE Pre University College, Physics Chemistry Math Computer Science, St\. Aloysius \(Deemed to be University\) ## Public links - github: https://github\.com/CalanPereira - codeforces: https://codeforces\.com/profile/repegfrost [View the original profile](https://tal.club/meet/calan-pereira) ```json { "@context": "https://schema.org", "@graph": [ { "@type": "Person", "@id": "https://tal.club/meet/calan-pereira#person", "name": "Calan Pereira", "url": "https://tal.club/meet/calan-pereira", "image": "https://tal.club/meet/calan-pereira/profile-photo.jpg", "description": "Meet Calan Pereira, Software Engineer @ Arcana based in Bengaluru. AI stack includes anthropic apis, claude code, and claude. Explore public work links including github and codeforces.", "jobTitle": "Senior Backend Engineer", "worksFor": { "@type": "Organization", "name": "Arcana" }, "hasOccupation": { "@type": "Occupation", "name": "Senior Backend Engineer" }, "homeLocation": { "@type": "Place", "name": "Bengaluru" }, "alumniOf": [ { "@type": "EducationalOrganization", "name": "Dayananda Sagar College of Engineering, BANGALORE" }, { "@type": "EducationalOrganization", "name": "St. Aloysius (Deemed to be University)" } ], "knowsAbout": [ "anthropic apis", "claude code", "claude", "codex", "cursor" ], "sameAs": [ "https://github.com/CalanPereira", "https://codeforces.com/profile/repegfrost" ], "mainEntityOfPage": { "@id": "https://tal.club/meet/calan-pereira#webpage" } }, { "@type": "ProfilePage", "@id": "https://tal.club/meet/calan-pereira#webpage", "url": "https://tal.club/meet/calan-pereira", "name": "Calan Pereira on Tal", "description": "Meet Calan Pereira, Software Engineer @ Arcana based in Bengaluru. AI stack includes anthropic apis, claude code, and claude. Explore public work links including github and codeforces.", "dateModified": "2026-08-04T17:34:00.202Z", "isPartOf": { "@id": "https://tal.club/#website" }, "mainEntity": { "@id": "https://tal.club/meet/calan-pereira#person" }, "primaryImageOfPage": { "@type": "ImageObject", "url": "https://tal.club/meet/calan-pereira/profile-photo.jpg", "contentUrl": "https://tal.club/meet/calan-pereira/profile-photo.jpg", "caption": "Calan Pereira profile photo on Tal" }, "inLanguage": "en-IN" } ] } ```