Sajedul Karim
Senior Software Engineer at Optimizely
Dhaka, Dhaka Division, Bangladesh
Summary
👤
Senior🎓
Top SchoolSajedul Karim is a Senior Software Engineer with 11 years of experience building scalable, fault-tolerant backend systems and Android apps, currently advancing platform reliability at Optimizely. He specializes in the Spring ecosystem (including Spring Cloud Netflix, Security, JWT/OAuth) and has production experience with containerization, Kubernetes, CI/CD, and both AWS and GCP deployments. His background spans fintech and consumer platforms where he led architecture, mentored teams, and enforced SOLID principles and clean code across services. An active community contributor, he maintains a strong Stack Overflow presence (6.8K+ reputation, top 4% last quarter) and publishes technical writing on Medium while sharing projects on GitHub. He’s particularly interested in advanced OOP, distributed systems and big-data workloads, and routinely blends hands-on engineering with pragmatic DevOps to ship reliable systems.
11 years of coding experience
12 years of employment as a software developer
BSC, Computer Science and Engineering (CSE), BSC, Computer Science and Engineering (CSE) at Rajshahi University of Engineering and Technology
Bengali, English
Stackoverflow
6,895reputation
5.4mreached
161answers
20questions
android
top-5%
hibernate
top-5%
firebase-cloud-messaging
top-5%
spring-data-jpa
top-1%
tomcat
top-5%
spring
top-5%
Github Skills (36)
spring-data-jpa10
java9
spring9
nfc9
thymeleaf9
android9
hibernate9
firebase-cloud-messaging9
firebase9
tomcat9
jpa9
firebase-functions8
crashlytics7
firebase-storage7
firestore7
Programming languages (3)
Github contributions (5)
sajedul-karim/SpringReadyApp
Oct 2019 - Apr 2021
SpringBoot ready apps for demo in various article
Contributions:48 commits, 2 PRs, 46 pushes in 1 year 6 months
spring-bootspringbootspringspring-data-jpathymeleaf
mesuk/BookStoreClient
Apr 2015 - Oct 2015
Contributions:166 pushes, 1 branch in 5 months
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