Hi there 👋

I occasionally blog about programming here.

I enjoy building information systems that just work, which can only be achieved by keeping IT as simple as IT can be. If you are into Clojure, Common Lisp, Guile, Erlang/Elixir, Haskell, F#, OCaml, Ada, Prolog, Forth and APL or any other programming languages that jolts your brain to think, drop me a line via acm ktuman o r g (If you are human, you know what the email address should be).

Note: I am NOT currently available for hire and do NOT respond to third party recruiters. However, if your company values fast feedback cycle, developer productivity via great tooling and functional approach to problem solving, I'd be interested in spending sometime together to solve tough problems.

Work Experience

• 2016/02 - Present: Owner of Birkey LLC

  • Building, Mentoring and Leading Engineering teams at Startups to design, develop and deliver great products.

• 2018/11 - 2024/08: Sr. Staff Software Engineer TapClicks Inc (via AdStage Inc acquisition)

  • Led the design and implementation Dashboard Reporting and Business Intelligence Web Application including tooling, architecture and engineering best practices.
  • Worked with stakeholders across various engineering teams as an Individual Contributor(IC) to help fix and establish best way to move forward in addressing major customer facing issues.
  • Mentored engineering team members to write high quality code with readability and ease of change in mind.
  • Tech Stack: Elixir, Clojure/Java, ClojureScript, Phoenix LiveView, Datomic, PostgreSQL and all things AWS.

• 2017/02 - 2018/09: Omnyway Inc

  • Senior Full Stack Clojure Engineer as an early member of core Engineering Team responsible for Core e-commerce platform and API development.
  • Tech Stack: Clojure/ClojureScript, PostgreSQL, Kafka, and all things AWS.

• 2012/08 - 2017/02: Runa Inc (Acquired by Staples Inc as Staples Labs)

  • Started as a Clojure Engineer. Later promoted to Engineering Lead, Engineering Manager and Director of Engineering. Responsible for SLA critical web services such as recommendation system, shipping prediction engine, etc.
  • Tech Stack: Clojure (with some Java where performance is critical), PostgreSQL/Redis, RabbitMQ (replaced by Kafka), Protobuf, and all things AWS.

• 2011/08 - 2012/08: The Climate Corporation

  • Java/Clojure Engineer as a member of Risk Management Team.
  • Tech Stack: Java (with Clojure sneaked in as jars), Thrift, and Spring/Hibernate.

• 2005/10 - 2011/08: Kyocera Document Solution USA

  • Started as a Software Engineer, then promoted to Team Lead. Responsible for developing Web Application that manages IoT printer fleets.
  • Tech Stack: Java, Spring/Hibernate, PostgreSQL, and OSGi.

Education

• Post Graduate Computer Science with Software Engineering focus at California State University East Bay - CSUEB.