Berlin · Senior Full Stack Engineer

Shazia
Kausar

I design, build, and operate business-critical backend platforms — Java, Spring Boot, Kafka, and cloud-native infrastructure that stays reliable under load.

Let’s talk See experience
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Years shipping production systems

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Companies, from telco to fintech

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Large-scale platforms led

OCPJP

Oracle Certified Java Programmer

01 — About

Technical leadership with a backend engineer’s hands.

Senior backend engineer with more than a decade designing, developing, and deploying systems that matter: payments, telecom, insurance, and EV charging platforms.

Deep in Java and Spring Boot, microservices, PostgreSQL, and event-driven design. Comfortable from architecture and code review through Kubernetes, Terraform, and Grafana in production.

Architecture, code reviews, and mentoring across teams

Concurrency, transactions, and performance under load

AWS, Docker, Kubernetes, Terraform, and CI/CD ownership

02 — Experience

A path through systems that have to work.

  1. Jan 2026 — Present Freelance

    Full Stack Developer

    Design and ship full-stack products for multiple clients — Spring Boot APIs, Angular frontends, and production operations including Ramana Learning Center.

  2. Aug 2023 — Dec 2025 Monta

    Senior Engineer

    Built Java microservices and Kafka-backed event processing for a high-volume EV charging platform. Owned PostgreSQL/MySQL performance, AWS/K8s/Terraform delivery, Grafana observability, and CI/CD.

  3. Nov 2021 — Jul 2023 MODIFI

    Senior Engineer

    Delivered Spring Boot services for fintech and payment processing. Designed Kafka event flows, transactional PostgreSQL/MySQL schemas, and cloud-native deployments with architects and product.

  4. May 2019 — Oct 2021 Etisalat

    Advisory Software Engineer

    Engineered enterprise Java backends for large-scale telecom transaction and integration workloads, with async processing, AWS/Docker delivery, and production observability.

  5. Aug 2018 — Apr 2019 InfoTech

    Principal Software Engineer

    Led full-stack delivery of SBP-aligned financial systems, including JPOS message formats, Spring/JSF/JPA on Tomcat and Oracle, with JUnit and secure-development practice.

  6. Jan 2018 — Aug 2018 INFOGISTIC

    Lead Software Engineer

    Defined architecture for property listing and transaction platforms. Introduced Activiti workflow automation and Apache Solr search on Spring, JPA, and MySQL.

  7. May 2011 — Dec 2017 NETSOL Technologies

    Principal Software Engineer

    Grew from Software Engineer to Principal, leading Agile delivery of insurance and finance platforms for UK, US, and Australian clients. Modernized legacy stacks to Java/Spring, cut claims time by 25%, and lifted transaction efficiency by 30%.

03 — Skills

The stack I reach for.

Backend & architecture

JavaSpring BootREST APIs MicroservicesDistributed systems Event-driven designConcurrency

Data & messaging

PostgreSQLMySQLMongoDB RedisApache Kafka AWS SNS/SQSQuery tuning

Cloud & delivery

AWSDockerKubernetes TerraformArgoCD GitHub ActionsCI/CD

Reliability & leadership

GrafanaTelemetryIncident support Code reviewsMentoring Agile / ScrumSecurity practice

04 — Selected work

Outcomes, not just tickets.

Monta

UK Uptime compliance

Uptime export for UK public charge-point regulation, deployed 23 November 2024.

Platform

Reports → alerts

Turned underused reports into a focused alerts system for large clients.

Platform

Portal to HUB migration

Moved core flows to HUB for performance, scale, and a cleaner technical model.

APIs

Self-serve data exports

Export APIs so customers can download operational data as XLSX.

NETSOL

Insurance platforms

Led 5+ large insurance systems — 30% faster transactions, 25% faster claims, 40% less legacy debt.

05 — Background

Education

Bachelor of Computer Science

Punjab University College of Information Technology

Certification

Oracle Certified Professional

Java Programmer (OCPJP), Java SE 6 — Oracle Corporation

Community

KotlinConf 2024

JetBrains Conference, Copenhagen, Denmark

06 — Contact

Building something that has to scale?

Based in Berlin. Open to senior engineering, architecture, and hands-on backend leadership.