Senior Java Full-Stack Engineer with Cloud Expertise

Arsh Ahmed

Senior Java Developer - (Full Stack)

Phone: 224-***-**** Email: *************@*****.*** LinkedIn: https://www.linkedin.com/in/arsh-ahmed-cis/

Professional Summary

Senior Full Stack Java Developer with around 7 years delivering secure, scalable, cloud native platforms across telecom, finance, and media while balancing velocity with reliability and cost control.

Designs clean, versioned REST/GraphQL APIs and event streams; enforces contract testing, idempotency, and backward compatibility to keep multi team integrations stable during rapid change.

Hands on with Java 11–21, Spring Boot 3.x, JPA/Hibernate, and Golang services; writes defensive code, meaningful tests, and clear docs that shorten onboarding time for new contributors.

Experienced in microservices decomposition, domain boundaries, and data ownership; reduces cross service coupling via async messaging, schema evolution, and well defined SLAs.

Builds resilient pipelines and deployments with GitHub Actions/Jenkins/GitLab; applies trunk based development, semantic versioning, and automated rollbacks to minimize MTTR.

Deep AWS & GCP exposure (EC2/EKS/ECS/Lambda, S3, RDS/Aurora, CloudFront; Cloud Run, GKE, Pub/Sub, BigQuery); selects managed services to optimize performance per dollar.

Containerization & orchestration with Docker, Kubernetes, and Helm; designs resource requests/limits, HPA, and graceful shutdown for predictable autoscaling under bursty load.

Observability champion—instrumentation with OpenTelemetry, metrics in Prometheus/Grafana, structured logging via ELK/Splunk, and red/black alerting for actionable on call signals.

Security first mindset: OAuth2/OIDC, JWT, mTLS, secret rotation, KMS/Cloud KMS, S3/RDS encryption, and shift left SAST/DAST; enforces least privilege with IAM roles and policies.

Data engineering awareness: Kafka/Kinesis streams, CDC patterns, and batch orchestration; ensures exactly once semantics where required using idempotent producers and transactional outbox.

Performance tuning across JVM and SQL layers—profiling with JFR/YourKit, connection pool sizing, cache strategies (Redis), and query plans that cut P95 latency substantially.

Reliable schema management with Flyway/Liquibase; protects migrations with feature flags, phased rollouts, and dual write/read strategies during live cutovers.

Frontend proficiency with React/TypeScript and modern build tooling; builds accessible, responsive UIs and integrates robust form validation and client side caching.

Quality culture advocate: test pyramids with JUnit/Mockito, Cypress/Playwright, Pact; raises coverage where it matters and uses contract tests to detect breaking changes early.

Infrastructure as Code with Terraform/CloudFormation; codifies VPC, subnets, security groups, and EKS/GKE primitives; uses workspaces and modules for repeatable environments.

Cost governance—usage dashboards, lifecycle policies, right sizing, and data tiering; eliminated waste in non prod by scheduled shutdowns and ephemeral preview environments.

Agile/DevOps delivery—drives sprint ceremonies, builds roadmaps with measurable outcomes, and partners with product/design to align technical work to customer value.

Compliance aware engineering for finance and telecom; implements audit trails, PII minimization, and encryption in transit/at rest to meet regulatory requirements without slowing teams.

Mentors engineers through code reviews, pairing, and design sessions; documents runbooks and architecture decision records (ADRs) to spread knowledge beyond single owners.

Trusted cross functional collaborator who translates business goals into technical execution, steadily improving reliability, release cadence, and stakeholder confidence.

Technical Skills

Languages: Java (11–21), Golang, Python, JavaScript/TypeScript, SQL

Frameworks: Spring Boot, Spring Data/JPA, Spring Security, Hibernate, React, Angular, Node.js

Cloud & DevOps: AWS (EC2, EKS, Lambda, S3, RDS, CloudFront), GCP (GKE, Cloud Run, Pub/Sub, BigQuery), Terraform, GitHub Actions, Jenkins, GitLab CI

Data & Messaging: PostgreSQL, Oracle, MySQL, MongoDB, Redis, Kafka, Kinesis, RabbitMQ

Containers & Observability: Docker, Kubernetes, Helm, Prometheus, Grafana, ELK, OpenTelemetry

Security: OAuth2/OIDC, JWT, mTLS, IAM, KMS, Secrets Manager, Vault

Practices: Microservices, DDD, TDD, Contract Testing, Trunk Based Dev, Feature Flags, Blue/Green & Canary

Professional Experience

Comcast Corporation - Chicago, IL

Senior Java Full Stack Developer Jan 2023 – Present

Built and scaled microservices in Java 11+/Spring Boot and Golang for customer, telemetry, and provisioning domains; adhered to clear API versioning and SLOs to avoid breaking partner teams.

Designed REST and GraphQL APIs with strict schema governance and pagination, rate limiting, and circuit breakers; improved consistency across services using shared libraries and ADRs.

Introduced event driven patterns with Kafka for near real time telemetry and alerts; implemented idempotent consumers and dead letter handling to prevent data loss during spikes.

Optimized relational stores (PostgreSQL/Oracle) via indexing, partitioning, and connection pooling; cut P95 read latency significantly under peak traffic windows.

Containerized services with Docker and deployed to Kubernetes (EKS/GKE); configured readiness/liveness probes and HPA for resilient rolling updates and predictable autoscaling.

Provisioned infra with Terraform, templating network/IAM and managed databases; established ephemeral preview environments per PR for faster QA sign off.

Implemented OAuth2/OIDC with JWT and fine grained scopes; enforced service to service auth via mTLS and least privilege IAM roles for data access microservices.

Improved CI/CD with GitHub Actions/Jenkins and quality gates; integrated unit, integration, and contract tests to detect compatibility issues before production deploys.

Deployed API Gateways and CloudFront for secure, low latency edge access; tuned caching and compression to reduce bandwidth costs and page load times.

Instrumented services with OpenTelemetry, Prometheus, and Grafana; created SLO dashboards and paging policies that trigger on user visible symptoms rather than raw CPU.

Led incident response playbooks and postmortems; eliminated single points of failure and encoded lessons learned into remediation epics and runbooks.

Collaborated with frontend teams to deliver React dashboards for network health; leveraged client side caching and lazy loading to improve perceived performance.

Built reusable UI components in React and Angular, improving consistency and reducing duplicate code.

Implemented state management using Redux and NgRx for complex dashboards.

Hardened S3/RDS with encryption, lifecycle rules, and access patterns; implemented tagging and cost allocation to track per service spend and justify optimization work.

Championed trunk based development and feature flags, enabling safe partial rollouts and quick reversions without long lived branches or risky hotfixes.

Mentored peers on JVM profiling (JFR) and SQL plan analysis; institutionalized performance reviews that caught regressions early in the release cycle.

DMI - Cincinatti, OH

Software Engineer (Backend) June 2021 – Jan 2023

Developed latency sensitive services in Java/Spring for trading and clearing; applied efficient serialization, connection reuse, and bounded queues to keep tail latencies low.

Engineered Kafka backed event pipelines for trade execution and market data; ensured ordering where required and tuned retention/compaction to balance cost with replay needs.

Migrated legacy modules to microservices with clear domain seams; reduced coupling by replacing shared DB tables with API/stream contracts and consumer driven tests.

Implemented CI/CD with Jenkins and GitLab CI, including static analysis and regression suites; shortened lead time while preserving change failure rate targets.

Adopted Terraform to standardize environment creation; codified VPC, subnets, and security groups with reusable modules and environment variables.

Applied OAuth2 and JWT for inter service auth; introduced secret rotation and KMS integration to meet internal security baselines and audit requirements.

Optimized PostgreSQL and Oracle workloads with query plan reviews, write batching, and back pressure; improved throughput during peak sessions.

Containerized services with Docker and orchestrated on Kubernetes; used PodDisruptionBudgets and anti affinity to sustain availability during maintenance.

Enhanced observability with Prometheus rules and Grafana dashboards; added percentiles, RED/USE metrics, and SLO error budget tracking for clearer priorities.

Partnered with UI teams (React/Angular) to streamline data contracts; replaced bespoke adapters with shared TypeScript clients and OpenAPI generated SDKs.

Instituted blue/green deployments and traffic shaping; enabled quick rollbacks and canaries keyed to customer impacting KPIs.

Reduced operational toil by automating runbooks and provisioning; integrated ChatOps notifications for deploys and incidents to improve transparency.

Introduced contract testing (Pact) across producer/consumer services; cut integration bugs found in staging and improved delivery predictability.

Executed memory leak hunts using profilers and heap dumps; fixed critical leaks and instituted leak detection checks in CI to prevent regressions.

Contributed to architectural review boards; documented decisions and trade offs to align stakeholders and minimize future rework.

IM GLOBAL – Indianapolis, IN

Java Developer Mar 2019 - May 2021

Modernized legacy monoliths into Spring Boot microservices; established API standards, error models, and pagination to reduce inconsistent client implementations.

Built customer facing features with React/Angular and TypeScript; emphasized accessibility and performance budgets to improve UX on lower end devices.

Developed dynamic forms, routing modules, and lazy-loaded components to enhance UX.

Integrated REST/GraphQL APIs with Axios/HttpClient and added client-side caching layers.

Created REST services with Spring Data JPA and Hibernate; implemented caching layers (Redis) and N+1 query fixes to stabilize latency under load.

Migrated workloads to AWS (EC2, Elastic Beanstalk, S3, CloudFront); secured endpoints with WAF, TLS enforcement, and least privilege IAM roles.

Adopted Kafka/MQ for async workflows; introduced retry, backoff, and DLQ strategies to make integrations resilient to downstream issues.

Established CI with Jenkins/Gradle and quality thresholds; integrated unit (JUnit), UI (Karma/Jasmine), and integration tests into pull request checks.

Implemented Spring Security with OAuth2/OIDC and JWT; protected PII and met internal compliance by centralizing token validation and scopes.

Integrated PostgreSQL and MongoDB; wrote safe migrations and data repair scripts to maintain integrity during schema evolution.

Introduced Swagger/OpenAPI and internal wikis; reduced onboarding time and raised API adoption across dependent teams.

Containerized services with Docker; standardized base images and vulnerability scanning to meet platform security guidelines.

Improved logging with structured events and correlation IDs; enabled end to end tracing across services to speed up incident triage.

Coordinated with SRE to add health probes, pod budgets, and autoscaling; achieved higher uptime during planned changes and traffic surges.

Guided feature flag rollout patterns; allowed safe experimentation and toggling without redeploys or code removal.

Collaborated in Agile ceremonies and quarterly planning; translated business goals into milestones with measurable outcomes.

Documented runbooks and hand offs; ensured 24 7 support readiness with clear escalation paths and contact points.

Education

M.S in Information studies - Trine university.

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