Bala Subramanyam Lanka

What I bring

• 🔐

  Security & identity

  OAuth 2.0 frameworks with Spring Security, JWT-based API security, and now secrets, provisioning and authorization with HashiCorp Vault.

• ⚙️

  Backend & APIs

  REST APIs with Spring Boot and Jersey, runtime services in Go, Kafka producers and consumers, webhooks and the plumbing that keeps them reliable.

• ☁️

  Cloud & platforms

  Moved microservices from Pivotal Cloud Foundry to OpenShift with minimal disruption, scaled services on OpenShift and AWS, and standardized CI/CD with Jenkins.

• 🧠

  Business rules

  Years of IBM ODM and ILOG JRules: BOM modeling, rule authoring, the Rete algorithm, and migrating ODM 8.6 applications to 8.10.

• 🏎️

  Performance

  PostgreSQL tuning, load testing and a bandwidth-saving throttling algorithm for connected devices. I like making things measurably faster.

• 🤝

  Leading & mentoring

  Technical lead for offshore teams, mentor to newcomers and a regular in architecture, estimation and planning discussions.

Experience

1. IBM

   Toronto, Canada

   Senior Software Engineer, HashiCorp Secure

   Jun 2026 – Present · 6 mos

   • Build runtime services and backend components in Go for Secure Hub, Secure Runtime and Vault.
   • Integrate and automate HashiCorp security products, including secrets and access management.
   • Improve secure production workflows across provisioning, authorization and service reliability.
   • Deliver scalable, secure and compliant platform capabilities for enterprise environments.

2. Cognizant

   Toronto, Canada

   Senior Software Engineer III

   Oct 2022 – Jun 2026 · 3 yrs 9 mos

   • Owned and evolved 10 Spring Boot microservices behind fraud-detection workflows, each handling about 2–20 TPS in production.
   • Technical lead and hands-on contributor, guiding offshore teams while driving design and implementation decisions.
   • Led the migration from Pivotal Cloud Foundry to OpenShift Container Platform with minimal production disruption.
   • Cut application latency by about 25% through performance tuning, PostgreSQL query optimization and targeted load testing.
   • Designed and enforced JWT-based authentication and secure API practices aligned with enterprise cybersecurity standards.
   • Owned scaling strategies across OpenShift and AWS, and standardized builds, tests and deployments with Jenkins CI/CD.
   • Worked with QA, upstream consumers and downstream DMP / FICO decisioning platforms to keep end-to-end processing reliable.

3. CGI

   Toronto, Canada

   Senior Consultant

   Aug 2021 – Oct 2022 · 1 yr 3 mos

   • Migrated IBM ODM 8.6 applications to 8.10, building new Kafka consumers and producers to support the move.
   • Translated business requirements into Java XOM objects and rules alongside business units.
   • Built Java microservices to support the migration of legacy systems.
   • Planned, built and documented applications for internal teams and clients, and supported new rules in production.

4. Netradyne

   Bengaluru, India

   Senior Consultant

   Apr 2020 – Mar 2021 · 1 yr

   • Built and maintained secure REST APIs with Java, Jersey, Spring Boot, AWS and Postgres.
   • Worked on Kafka streams (consumers and producers), and architected, built and documented webhooks.

   Senior Software Engineer

   Jul 2019 – Dec 2019 · 6 mos

   • Centralized authentication and authorization across the product with OAuth 2.0 and Spring Security.
   • Designed the throttling algorithm that minimizes the internet bandwidth devices use to talk to the servers.
   • Designed and built a soft-rollout mechanism for over-the-air updates.

   Software Engineer

   Mar 2018 – Jun 2019 · 1 yr 4 mos

   • Built secure REST APIs and shipped Angular features, simplifying the UX through close work with product.
   • Architected and built Ops-Dashboard, an internal full-stack tool for the operations team.

5. Zeta Global

   Grisaille AdTech Solutions, Zeta Global Technology Excellence Center · Chennai, India

   Software Engineer

   Sep 2017 – Mar 2018 · 7 mos

   • Built secure REST APIs with Java, Node.js, Spring Boot, AWS and MySQL.
   • Built automation for customer support teams that cut ticket resolution time by 14%.
   • Practiced test-driven development, reaching 85% code coverage.

6. Cognizant

   Chennai, India

   Programmer Analyst

   Jun 2015 – Sep 2017 · 2 yrs 4 mos

   • Team lead for a team of 8: defect analysis, production handover and component integration testing.
   • Mentored newcomers and ran code reviews.

   Programmer Analyst Trainee

   Apr 2014 – May 2015 · 1 yr 2 mos

   • Built 43 SOAP web services and their business rules with J2EE, XSLT and IBM Operational Decision Manager.
   • Worked directly with the client on requirements, defect analysis and status.

7. Adaptavant

   Chennai, India

   Junior Software Engineer

   Aug 2013 – Mar 2014 · 8 mos

   • Built REST APIs and web apps with Java, RESTEasy, Spring MVC and Google Cloud, and moved the APIs to Google App Engine.
   • Created a JavaScript library for chat and analytics across websites, plus a visitor-statistics module.
   • Spoke at SYK (Spread Your Knowledge), the company’s internal knowledge-sharing sessions.

   Intern

   Dec 2012 – Mar 2013 · 4 mos

   • One of 3 interns, out of 50, offered a full-time role.

Toolbox

Languages

JavaGoPythonJavaScriptSQLC#C++

Frameworks

Spring BootSpring SecurityJerseyAngularDjangoIBM ODMILOG JRules

Security

OAuth 2.0JWTHashiCorp VaultSecrets management

Cloud & DevOps

OpenShiftKubernetesDockerAWSGCPPCFJenkins

Data & messaging

PostgreSQLOracleMySQLKafka

AI

AI application developmentPrompt engineering