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Lenko Donchev

Software Engineer

Backend Software Engineer at Gravitational

Chicago, Illinois, United States

Section title

Lenko Donchev's Email Addresses & Phone Numbers

Lenko Donchev's Work Experience

Incredible Technologies

Software Engineer

April 2006 to August 2006

Greater Chicago Area


Senior Programmer

June 2005 to February 2006

Sofia, Bulgaria

Code Assistance


August 2001 to April 2005

Sofia, Bulgaria

Lenko Donchev's Education

MU "Panaiot Volov" Bulgaria

MS, Computer Science

1994 to 1999

Lenko Donchev's Professional Skills Radar Chart

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Based on our findings, Lenko Donchev is ...

52% Left Brained
48% Right Brained

Lenko Donchev's Estimated Salary Range

About Lenko Donchev's Current Company

Incredible Technologies

Development for the Golden Tee Golf and Silver Strike Bowling arcade games.● Developed ACID compliant persistence layer (Java). ● Development of game statistics manager (Java, Oracle).

Frequently Asked Questions about Lenko Donchev

What company does Lenko Donchev work for?

Lenko Donchev works for Incredible Technologies

What is Lenko Donchev's role at Incredible Technologies?

Lenko Donchev is Software Engineer

What is Lenko Donchev's personal email address?

Lenko Donchev's personal email address is y****[email protected]

What is Lenko Donchev's business email address?

Lenko Donchev's business email addresses are not available

What is Lenko Donchev's Phone Number?

Lenko Donchev's phone (217) ***-*387

What industry does Lenko Donchev work in?

Lenko Donchev works in the Financial Services industry.

Who are Lenko Donchev's colleagues?

Lenko Donchev's colleagues are Mike McNamara, Elizabeth Maly, Eugene Valkou, Tomas Villarruel, Edward Spencer, Robert Newbould, Kate Peaker, Angela Honti, Manish Singh, and Spencer Neilan

About Lenko Donchev

πŸ“– Summary

Software Engineer @ Incredible Technologies Development for the Golden Tee Golf and Silver Strike Bowling arcade games.● Developed ACID compliant persistence layer (Java). ● Development of game statistics manager (Java, Oracle). From April 2006 to August 2006 (5 months) Greater Chicago AreaSenior Programmer @ Dobrosoft ● Development of distributed, online multiplayer poker game server (C++).● Succeeded in considerably improving the server's performance.● Developed LobbyServer to connect game clients to game servers in the cluster (C++). From June 2005 to February 2006 (9 months) Sofia, BulgariaProgrammer @ Code Assistance ● Development of Betting Advisor(BA). BA is a distributed machine learning application for forecasting of horse racing events. BA utilizes a neural network with genetic algorithm (C/C++, MATLAB).● Developed genetic algorithm server on Linux and distributed computation client on Windows (C/C++, Linux, MATLAB, Annie).● Development of online casino games (JavaScript, C++). Slots, bingo, pull tabs, wheel of fortune, jackpot party and lotto games. From August 2001 to April 2005 (3 years 9 months) Sofia, BulgariaBackend Software Engineer @ Gravitational Greater Chicago AreaSenior Software Engineer @ Caterpillar Inc. β€’ Building large scale IoT platform for telematics, telemetry, predictive maintenance and fleetmanagement of construction equipment (Scala, Akka, AWS Kinesis, AWSECS, Fargate, DynamoDB)β€’ Building microservices using Scala, Akka Streams, Akka Persistence and gRPC. From June 2020 to September 2020 (4 months) Chicago, Illinois, United StatesSenior Software Engineer @ Riverside Insights ● Leading DevOps and backend engineering efforts.● Building RCS (Riverside Cloud Services) cloud platform as a service for educational (K-12) and clinical assessments (Golang, HashiCorp Nomad, Consul, Docker, AWS, Micro-services, HashiCorp Vault, Jenkins, Terraform, Packer, Elasticsearch, Istio, Envoy, Zipkin, SaltStack, Vagrant).● Development of Riverside Cloud Services Management Console (Golang, AWS, Micro services, Docker, Vue.js, NGINX).● Created "AWS Clean Sweep" utility application to cleanup AWS resources for the purpose of cost optimization (Golang, AWS SDK for Go, Docker, AWS, EC2, EBS).● Development of cloud infrastructure automation scripts (Terraform, Packer, SaltStack, AWS, EC2, VPC, ELB, IAM, S3, ACM, Route 53).● Building service mesh infrastructure (Golang, Meshem, Envoy, Docker Swarm, HashiCorp consul-template, Consul, Nomad, Docker, AWS, Terraform).● Developed code generator to generate entities from DB schema (Rust, PostgreSQL).● Created Consul events monitor application (Golang, Consul API, Docker).● Development of student scoring conversion engine using Apache Spark, Amazon Kinesis, Spring, Java, GraphQL, AWS, Docker and PostgreSQL.● Developed Kinesis stream message processor (Rust, Rusoto, AWS Kinesis).● Developed test data injector for adaptive student scoring engine (Rust, curl-rust).● Setup of self-managed Elasticsearch cluster (Terraform, Packer, Redis, Logstash, Filebeat, Kibana, Cerebro, Grafana, AWS).● Setup of monitoring and alerting infrastructure (Elasticsearch, Kibana dashboards, Redis, Filebeat, Metricbeat, Logstash, Grafana dashboards, Prometheus, Terraform, Bash shell scripting, Jenkins, Docker, Consul, Nomad, AWS). From October 2018 to April 2020 (1 year 7 months) Itasca, ILSenior Software Engineer @ Houghton Mifflin Harcourt ● Building large scale cloud infrastructure using Golang, HashiCorp Nomad, Consul, Docker, HashiCorp Vault, Istio, Envoy, AWS, Packer, Terraform, Jenkins, SaltStack and Vagrant.● Created "Cloud Squirrel" - a Go application to manage HMH's Cloud Platform (Golang, AWS SDK for Go). The Cloud Squirrel manages a stash of nuts which represents the Docker containers in the cloud.● Designed and implemented custom quota functionality for Nomad cluster scheduler using Go (Golang, HashiCorp Nomad, Consul).● Building service mesh infrastructure using Istio, Envoy, Consul, Nomad and Docker.● Developed Vault Manager - a tool implemented in Go and designed for managing Vault instances in the cloud and controlling access to certificates, secrets and API keys using strong cryptography (Golang, HashiCorp Vault, Docker, AWS).● Development of cloud infrastructure automation scripts using Terraform, Packer, SaltStack and AWS.● Developed proof of concept load balancers using HAProxy, Keepalived, Fabio, Consul Template and Docker.● Development of student scoring and grading performance testing automation framework in Gatling and Scala.● Building highly scalable and resilient student scoring engine (Java, Spring, Micro-services, Apache Spark, Amazon Kinesis, PostgreSQL, AWS, Docker, Apache Mesos, Apache Aurora, Vagrant). From March 2018 to September 2018 (7 months) Itasca, ILSenior Software Engineer @ ShopperTrak Building big data platform for retail analytics (Spring, Micro-services, Cassandra, MongoDB, Groovy, Java, Erlang, RabbitMQ, AWS, Hazelcast). From November 2016 to March 2018 (1 year 5 months) Chicago, Illinois, United StatesSoftware Engineer V @ Bank of America Building petabyte scale trading infrastructure for Forex trading. β€’ Development of FX trading infrastructure in Python, Quartz and Sandra (petabyte-class database with over 700 instances deployed all over the world scaled to thousands of simultaneous clients). β€’ Development of PTE (Post Trade Engine) for FX (Java, Spring). β€’ Development of CPM (Cover Portfolio Manager) for FX (JavaScript, jQuery, jQuery DataTables, Java, Spring, Oracle) From September 2015 to October 2016 (1 year 2 months) Greater Chicago AreaLead Software Engineer @ CME Group β€’ Team lead of the back-end team of the OTC IRS Clearing project.β€’ Presenter at the CME's code jam sessions. Has given talks on Scala, Akka and FitNesse acceptance testing framework.β€’ Building Interest Rate Swaps trading platform (Java, Spring, TIBCO, Swapstream). β€’ Developed fault-tolerant feed handlers for real-time market data coming from Eurex, Reuters, CBOT and CME (Java, Spring, TIBCO). β€’ Designed and implemented Reuters market data recorder and replayer (Java, Spring). β€’ Developed fault-tolerant market data gateway for Interest Rate Swaps data as part of CME's Market Data Platform. (Java, FIX/FAST, Spring, TIBCO).β€’ Building clearing and risk system for Interest Rate Swaps (Java, Calypso, Oracle, Perl, Clojure). End of day cycle - trade netting(compression), blending, settlement, trade register, fees, trade transfer. From September 2006 to August 2015 (9 years) Chicago, Illinois, United States

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In a nutshell

Lenko Donchev's Personality Type

Introversion (I), Sensing (S), Thinking (T), Perceiving (P)

Average Tenure

2 year(s), 1 month(s)

Lenko Donchev's Willingness to Change Jobs



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