Hire Top Freelance
Mobile App Developers
in Toronto

Seasoned Java software engineer with over a decade of expertise in designing, developing, and optimizing high-performance systems. Proficient in leading technical teams and mentoring emerging talent, I have consistently delivered quality software solutions that exceed business expectations. Recognized as an active thought leader, I have spoken at international industry conferences and contributed to esteemed platforms like InfoQ and Foojay.IO. Armed with a comprehensive skill set that combines technical mastery, proven leadership capabilities, and extensive industry knowledge - Senior Java developers with 11+ years of experience. - Experienced back-end developer (developed a backend system for a financial application that serves 10+ million users). - Expertise in developing mobile applications - Expert in Java ( including Java 11-21, lambda expression, and stream API, Concurrency) - **Published four books** on Java ( 3 of them best-sellers) - Java User group leaders - Contributed AdoptOpenJDK project **Editorial Contributions** • Contributing Editor for the Java Queue and Architecture Queue at InfoQ.com. • Editorial Contributor at Foojay.io. **Community Leadership and Engagement** • Founder and Organizer for the Java User Group of Bangladesh (JUGBD), community meetups and conferences since 2013. • Recently joined the Jakarta EE Ambassadors Program. • JCP Associate Member: Active member of the Java Community Process. **Technical Contributions and Workshops** • Eclipse Committer for the Jakarta Starter project. • Presented talks on Java and software engineering topics. More details at bazlur.ca/conference-talks. Twitter: https://twitter.com/bazlur_rahman LInkedIn: https://www.linkedin.com/in/bazlur/ Key Skills: Programming Language: Java (JSE, JEE), Java 8, Java 11 to Java 21, Scala, Python, Groovy, C, JavaScript Frameworks: Spring Boot, Spring Framework, Grails, Hibernate, JPA, JMS, Android Database: Oracle Database, DynamoDB, Microsoft SQL Server, MySQL, PostgreSQL Development Tools: IntelliJ Idea, Eclipse, Maven, Gradle, GIT, TeamCity(CI/CD), NeverCode CI, Middleware: Apache Tomcat, JBoss EAP, Oracle WebLogic Server, AWS (CloudFront, CloudWatch, Beanstalk, S3, SNS/SQS, Lambda, Ec2, Kinesis, Redis, Redis PubSub), jPOS Operating Systems: Mac OS X, Linux Ubuntu, Linux CentOS Others: Microservices, RESTful API design, and integration, Clean Code, Clean Architecture, OOP, SOLID, TDD, Design Patterns, Agile methodologies

Mobile AppJava EENode.jsAndroidSpring BootJava

Cloud scholar, PostgresQL magician, IaC enthusiast, a bit of a mobile dev. At Hvr, I am lucky to be able to follow modern DevOps practices to deliver good software. Skilled at: Python, PostgresQL, Flutter, Docker, AWS CloudFormation, AWS RDS, AWS ECS, AWS Code\* services, AWS Lambda and others.

Mobile AppRESTful APIInfrastructure as CodeAWS LambdaDockerPostgreSQLAWS (Amazon Web Services)Python

I'm a Software Engineer who loves what he is doing and always is on the edge with the technology progress. Being an engineer today is not only clicking buttons and designing diagrams...its also about communication and how to work in a team and more importantly as a team. Like someone said: "If you want to go fast - go alone, but if you want to go far - go together!". These are some very wise words, which drives me being an outstanding team player. I always put myself on the edge and always try to be outside my comfort zone. I am an Entrepreneur. Created 2 startups, sold 1 of them and put on a shelf the other one for the best times to come. Right now working on a new startup, which you never know where it gets you. I love programming, that is my passion and what I can do really great. Have a lot of experience building highly scalable and robust applications. Most of my skills go to the Backend (Python, Java, Nodejs, PostgreSQL, MySQL, MongoDB, Redshift, Redis), however when you are creating something new then you need to know and learn all of the aspects, so I am familiar with Frontend as well (AngularJS, React). I think automation is where the whole world is going right now and everything that is repetitive - has to be automated. I know ansible, bash, CI/CD, git. Have a lot of experience working with different cloud providers: AWS, GCP, DigitalOcean as well working with different tools that can be integrated in order to increase productivity level or make your application more maintainable with monitoring behind it.

Mobile AppFlutterJavaPython