Aweem Aslam - Senior Java Developer for Microservices

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Germany

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Experience

Dec 2022 - Present

3 years 10 months

Germany

Senior Java Developer

Folio3

Architected, developed, and maintained scalable backend services using modern Java (17/21), Kotlin, and Spring Boot for high-traffic, performance-critical platforms.
Served as a technical leader for complex initiatives, taking features from inception through deployment, and implementing runtime validation layers using advanced LLM APIs with secure guardrails.
Optimized PostgreSQL schemas and query efficiency at scale, drastically reducing data retrieval latencies and ensuring cross-service transactional consistency.
Spearheaded continuous improvement in development processes, designing comprehensive unit and integration testing frameworks that drove test coverage from 50% to over 90% via JUnit, Spock, and Mockito.
Partnered extensively with cross-functional product and data squads to define API boundaries, design interfaces, and ensure rapid, high-confidence CI/CD release cycles.

Dec 2020 - Nov 2022

2 years

Pakistan

Lead Java Developer

VentureDive

Led the technical direction and architecture for a high-scale B2B/B2C SaaS platform serving 100K+ monthly active users, guaranteeing system resilience and operational excellence.
Mentored and coached junior and mid-level engineers on software design patterns, technical engineering best practices, and systematic production problem-solving.
Diagnosed and resolved complex technical challenges and performance bottlenecks within a high-concurrency, asynchronous, event-driven microservices architecture backed by Apache Kafka and AWS.
Enhanced development velocity and automated testing methodologies by building structured CI/CD pipelines via GitHub Actions, reducing release cycles by 30%.

Oct 2019 - Nov 2020

1 year 2 months

Pakistan

Senior Java Developer

BTI Algoras

Developed robust ERP backend services using Java and Spring Boot, taking complete ownership of core business domain components.
Executed major database refactoring and query optimizations that improved system performance by 40% through index design and advanced schema modeling.
Conducted rigorous peer code reviews, ensuring team adherence to high standards for clean code, solid architecture design, and enterprise safety principles.

Jul 2016 - Sep 2019

3 years 3 months

Montreal, Canada

Java and Web Application Developer

Nakisa

Engineered highly available enterprise systems, focusing on distributed data synchronization and high-volume data-processing pipelines using Java and Apache Kafka.
Attained a 30% performance optimization boost across core processing workflows through meticulous thread tuning, query profiling, and memory management.
Maintained, diagnosed, and troubleshoot complex application deployments across global cloud infrastructure, ensuring minimal downtime.

Sep 2015 - Jun 2016

10 months

Pakistan

Software Engineer

Tower Technologies

Built and maintained maintainable full-stack feature sets for B2C applications, acting as a functional liaison between backend Java architectures and frontend interfaces.
Collaborated closely with automated QA teams to trace system faults, isolate edge cases, and execute structured integration tests.

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology.

Information Technology

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, and Quality Assurance.

Information Technology

Product Development

Quality Assurance

Summary

Senior Backend Engineer with 8+ years of hands-on experience architecting, developing, and operating high-traffic, production-grade microservices and distributed systems.
Java & Spring Boot Specialist: Expert-level mastery across modern Java versions (Java 11, 17, 21) and the complete Spring ecosystem, building highly resilient backend components and scalable RESTful APIs.
Technical Leadership & Mentorship: Proven track record of serving as a technical lead, owning complex product domains from inception to deployment, conducting rigorous code reviews, and coaching junior/mid-level engineers.
Data Modeling & Performance Optimization: Deep expertise in relational databases (PostgreSQL), specializing in schema migration, query optimization, and efficient data modeling for high-volume enterprise systems.
Production Observability & Excellence: Skilled in tracing, debugging, and resolving intricate production issues in high-concurrency environments utilizing advanced monitoring tools (Prometheus, Grafana, ELK stack).
Full-Stack Liaison: Well-versed in agile, cross-functional squads (Product, Data, QA), acting as an effective technical liaison with foundational knowledge in frontend technologies (Angular, TypeScript).

Skills

Core Backend Languages: Java (Modern Versions 11, 17, 21), Core Java (8), Kotlin
Frameworks & Core Architecture: Spring Boot, Spring Cloud, Hibernate, Jpa, Microservices Architecture, Distributed Systems Design, Concurrency, Security Best Practices
Api Design & Integration: Resilient High-Volume Restful Apis, Graphql, Integration Of Core External Ecosystems
Databases & Data Modeling: Postgresql (Advanced Query Tuning & Jsonb), Sql Server, Mysql, H2, Redis, Nosql (Mongodb, Dynamodb)
Messaging & Data Pipelines: Apache Kafka, Apache Flink, Asynchronous Processing Engines
Cloud, Devops & Ci/Cd: Aws (Ecs, Ec2, S3, Rds, Lambda, Sqs), Docker, Kubernetes, Github Actions, Jenkins, Automated Safe Deployment Pipelines
Testing & Quality Assurance: Comprehensive Unit/Integration/Performance Testing, Junit, Spock (Groovy), Mockito, Tdd, Bdd
Observability & Monitoring: Grafana, Prometheus, Kibana (Elk Stack), Advanced Troubleshooting & Downtime Minimization
Frontend Liaison Skills: Angular (V21), Typescript, Rxjs, Cross-Functional Interface Alignment

Languages

English

Advanced

German

Elementary

Education

University of Central Punjab

Bachelor of Science in Computer Science · Computer Science · Pakistan

Statistics

Experience

Total positions 5

Experience in Information Technology 11 y

Avg length 2 y 2 m

Longest experience 3 y 9 m

Global experience

Countries worked in 3 (Pakistan, Germany, Canada)

Primary country Pakistan

Expertise

Recent roles Senior Java Developer, Lead Java Developer, Java and Web Application Developer

Main industries Information Technology

Main business areas Information Technology, Product Development, Quality Assurance

Qualifications

Highest degree Bachelor

Profile

Member since

September 2026

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Frequently asked questions

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Aweem speaks the following languages: English (Advanced), German (Elementary).

Aweem has at least 11 years of experience. During this time, Aweem has worked in at least 4 different roles and for 5 different companies. The average length of individual experience is 2 years and 2 months. Note that Aweem may not have shared all experience and actually has more experience.

Based on recent experience, Aweem would be well-suited for roles such as: Senior Java Developer, Lead Java Developer, Java and Web Application Developer.

Aweem's most recent position is Senior Java Developer at Folio3.

In recent years, Aweem has worked for Folio3 and VentureDive.

Aweem is most experienced in industries like Information Technology.

Aweem is most experienced in business areas like Information Technology, Product Development, and Quality Assurance.

Aweem has recently worked in industries like Information Technology.

Aweem has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.

Aweem holds a Bachelor in Computer Science from University of Central Punjab.

Aweem will be available full-time from October 2026.