Igor Akkerman

paid content platform: full-stack development and integration

Industry: online publishing

• set up Grafana alerting for Kafka topics
• evaluated solution to decrease load latency and increase development productivty of Paywall micro-frontends
• evaluated Playwright end-to-end testing for Paywall solution

Java, Spring Boot, JavaScript, AWS, Kafka, Kafka Streams, MSK, akhq.io, Kubernetes, EKS, Flux, Grafana, RDS, PostgreSQL, Imply Pivot, Druid, REST, OAuth2, Google Workplace, GitLab

digital farming: cloud architecture

Industry: digital farming

Process: Scrum

• assessed issues in architecture, code, security and processes, supported project management
• fully re-designed the whole system to be event-driven and serverless, created transition plan
• built a full-stack asynchronous PoC for new architecture, evaluated future technologies/services to adopt
• implemented a highly parallelized data processing pipeline
• trained team members in AWS services and modern engineering paradigms

AWS, CDK, Lambda, DynamoDB, AppSync, Amplify, GraphQL, Python, Pandas, React, TypeScript, Vite, pnpm, SNS, SQS, ECS, Docker, RDS, PostgreSQL, R, Java, Spring Boot, REST, BitBucket, Confluence, Teams

e-commerce platform: warehouse microservices

Industry: e-commerce, logistics

Process: Scrum

• collected requirements for a core service to be consumed by multiple teams, designed its REST API
• implemented service functionality in Kotlin / Spring Boot, created project configuration
• optimized the build setup and code quality for shorter iteration cycles
• educated team members in idiomatic Kotlin, BDD using Cucumber and clean code
• conducted code and design reviews of React frontend

Kotlin, Spring Boot, REST, OpenAPI, AWS, Kubernetes, Docker, Nakadi, Kafka, CQRS, PostgreSQL, Jooq, R2DBC, Cucumber, TypeScript, React, GitHub, Google Workplace

Vehicle IoT platform prototype

Industry: automotive, RnD

Process: Scrum

• re-designed and implemented IoT bridge in Python
• developed features of IoT gateway in Go
• designed and implemented pairing between bridge and gateway using gRPC/Protobuf
• collected requirements of system security and defined security model

Docker, Python, Go, MQTT, Mosquitto, Paho, Web of Things (WoT), gRPC, Protocol Buffers (Protobuf), Raspberry Pi (ARM32, ARM64), GitLab

startup funding application platform

Industry: e-government

Process: Scrum

• created AWS architecture for new business domains
• supported the project management, defined user stories, introduced post-mortem process
• re-engineered single sign-on solution
• modeled domain and database for multi-tenant identity management
• led the backend team: conducted code/design reviews, coached junior developers

AWS, Lambda, SQS, SNS, ECS, Kubernetes, Docker, OAuth2, TypeScript, Node.js, Express, Mongoose, MongoDB, GitLab

vehicle and driver management system

Industry: logistics

Process: Scrum, pair-programming

• developed and operated features in REST microservices using Kotlin / Spring Boot
• performed large refactoring of React web microfrontends, assessed vulnerabilities
• set up AWS cloud infrastructure for new features, re-configured serverless cloud database

AWS, RDS, Aurora Serverless, Fargate, Docker, CloudFormation, CodeBuild, Kotlin, Spring Boot, AssertJ, React, Redux, TypeScript, Jest, Karma, Cypress, Kafka, Flyway, Datadog, Gradle, AWS Session Manager, BitBucket, Jira, Confluence

in-car product purchasing platform (ordering, payment, licensing)

Industry: automotive

Process: Scrum

• designed, implemented and operated Java Spring Boot REST microservices on CloudFoundry PaaS
• improved the code and design quality through reviews and large refactorings, taught clean code principles
• enhanced developer productivity by building a local Docker setup of the application stack
• produced PoC solutions to adopt AWS services and cloud architecture concepts, designed a data pipeline leveraging CQRS

AWS, SQS, SNS, RDS Aurora, REST API, CloudFoundry, Docker, Java, Spring Boot, Eureka, Hystrix, Ribbon, Feign, Zuul, Spring Cloud Netflix, JUnit 5, AssertJ, Sonar, Redis, PostgreSQL, Liquibase, Gradle, Jenkins Pipeline DSL, Logstash, Kibana, Greylog, Prometheus, BitBucket, Jira, Confluence

e-commerce platform: REST microservices

Industry: e-commerce

Process: Scrum

• designed, developed and operated containerized Java microservices for order processing
• transformed legacy Java modules into Spring Boot REST APIs using the strangler pattern
• re-architected and implemented automated unit, integration and acceptance tests using BDD
• set up automated build and release CI/CD pipelines, allowing unsupervised deployment into production
• supported the design of an SSO solution

Docker, Mesos, Marathon, Java, Spring Boot, REST API, Spring Batch, JPA, Hibernate, Retrofit, Hystrix, Zuul, reactive streams, JUnit, Google Truth, Cucumber, Spock, BDD, Rest-assured, Jenkins pipeline DSL, MongoDB, Oracle, Kibana, Grafana, BitBucket, Jira, Confluence