Alex Stangl Resume

Veteran software engineer with track record of successful software development using a myriad of technologies. Prefer back-end development using functional programming languages, such as Scala, with emphasis on correctness, robustness, and automation. Relish challenging problems, striving for elegant solutions, yet pragmatic about not overengineering
Languages: Scala, Java, JavaScript, Clojure
B.S. Computer Science, Washington University, St. Louis, Missouri

Lead Software Engineer

Disney Streaming, New York, NY (Remote)

January 2022 - Present

Developed next-gen offer management, customer service systems, replacing separate Hulu, Disney+ apps
Mentored junior developers, gave detailed feedback in code reviews and pairing sessions
Used Scala, TypeScript, akka, Akka Streams, cats, PostgreSQL, MySQL, AWS (S3, EC2, EMR, SQS, etc.), GraphQL, http4s, OAuth2, JWT, Datadog, REST, IntelliJ, GitHub, Swagger/OpenAPI, Spinnaker, Docker, Docker Compose, Kubernetes, Terraform, LaunchDarkly, logback, WireMock, localstack, Jenkins, sbt, ScalaMock, WartRemover, shell scripts, Scrum, Jira, PagerDuty

Senior Software Engineer

Kunai Co., Oakland, California
Client: Capital One Corporation

January 2021 - December 2021

Developed components of Capital One's next generation financial transaction processor, which will handle billions of transactions per year, totaling tens of billions of dollars
Mentored junior developers and interns, gave detailed feedback in code reviews and pairing sessions
Used Scala, TypeScript, GoLang, ZIO, Monix Task, Monix Observable, akka, cats, Cats Effects, FS2, PostgreSQL, AWS (S3, EC2, EMR, ECS, etc.), Apache Kafka, Cassandra, http4s, Avro, OAuth2, JWT, New Relic, Datadog, Grafana, REST, IntelliJ, VS Code, GitHub Enterprise, Swagger/OpenAPI, Gatling, Docker, Docker Compose, Kubernetes, Splunk, log4j2, WireMock, localstack, Jenkins Pipeline, WartRemover, sbt, Postman, DevOps, Scrum, Jira, PagerDuty

Senior Consultant

Net Effects, St. Louis, Missouri
Client: Climate Corporation

March 2019 - January 2021

Developed reactive microservices for machine data pipeline, deployed in AWS EC2 and EMR, processing planting, harvest, and application data from tens of millions of acres of farmland worldwide, transforming it into a layered data product, showing crop yield, seed products, etc.
Revised color contour model used to display soil nutrient levels across fields, taking into account type of lab assay used, and using expanded ranges, resulting in far more useful display detail in most scenarios
Mentored junior developers and interns, and gave detailed feedback in code reviews
Used Scala, Clojure, Python, Apache Spark, akka, cats, PostgreSQL, AWS (S3, EC2, RDS, EMR, ECS, SSM, SQS, SNS, DynamoDB, etc.), Scalatra, http4s, Avro, OAuth2, JWT, Prometheus, Grafana, REST, IntelliJ, VS Code, Ring, Hystrix, GitLab CI, Swagger/OpenAPI, Gatling, Docker, Docker Compose, New Relic, Splunk, logback, Slick DB, tmux, WireMock, localstack, Jenkins, sbt, Leiningen, shell scripting, GeoTrellis, QGIS, Graphviz, awk, jetty, Liquibase, BitBucket, DevOps, Scrum, Jira

Senior Software Engineer

CiBO Technologies, Inc., St. Louis, Missouri

January 2018 - February 2019

Developed and maintained Scala crop models, MCMC (Markov Chain Monte Carlo) Bayesian inference machine-learning calibration algorithm
Developed auto-scaling logic to control size of Kubernetes cluster used for execution of model calibration MCMC machine-learning algorithm, weighing algorithm parallelism on dataset against costs of various AWS EC2 instance types and numbers of cores, saving money by avoiding excess EC2 charges
Full stack development, including scalajs-react-based app allowing user to visualize model data in histograms and overlaid on map
Use Jenkins Pipeline jobs running in Kubernetes for Continuous Integration
Mentored junior developers and interns, and gave detailed feedback in code reviews
On Software Quality and infrastructure matrix teams, and worked on automating releases and deploys
Used Scala, Scala-JS, machine learning, MCMC, AWS (S3, EC2, ECS, etc.), React, Prometheus/Kamon, Grafana, Leaflet, REST, IntelliJ, sbt, GitHub, OAuth2, Graphviz, Docker, Kubernetes, Monocle (lens/prisms), circe, Jenkins Pipeline, shell scripting, awk, DevOps, Scrum, Jira

Consultant

S³, Detroit, Michigan
Client: Monsanto (acquired by Bayer)

January 2015 - December 2017

Developed apps and activity workflows for Molecular Breeding Pipeline Optimization. Heavily involved in building the automatic genomics QC sub-workflows, as well as helping architect and refactor overall structure of these workflows. Apps were deployed to CloudFoundry in AWS EC2.
- Data-driven backbone (built on Amazon SWF) to support workflows
- GWS (genome-wide selection) workflow
- MAS (marker assisted selection) workflow
- Process PCR dye intensity files from global labs, converting them into a standardized format and feeding them into workflow that transforms them into probabilistic genotypes for further processing
Wrote tool to perform static analysis of workflows by analyzing workflow JSONs and using reflection to probe associated codebases, verifying correct type flow between activities, between workflows, and checking for many other problems
Wrote numerous scripts to save time by automating and simplifying routine tasks
Performed code reviews, regular refactorings and other technical debt cleanup
Used Scala, Java, JavaScript/ES6, Akka, Spray, AWS (S3, EC2, SWF, RDS, etc.), Kafka, CloudFoundry PaaS, Parquet, React, Slick DB, PostgreSQL, Hadoop HBase, Presto, Prometheus, Grafana, Akana, Vault, REST, Swagger, Graphviz, PlantUML, Splunk, ELK, logback, Postman, IntelliJ, OAuth2, Maven, sbt, GitHub Enterprise, Jetty, Tomcat, Oracle, JUnit, Cucumber, Sonar, Docker, Jenkins, Crucible, shell scripting, awk, DevOps, Scrum, Jira

Technical Reviewer

O'Reilly Media

2012 - 2014