Jul 2023 – Jan 2025 · 1 yr 6 mos · Amsterdam, North Holland, Netherlands · On-site

• Involved in infrastructure/devops/build.
• Technologies:
• Python, Bazel (monorepo), TeamCity, Gitlab CI/CD, PostgreSQL, Gerrit, Kubernetes, Prometheus, Loki, Grafana, Mimir, Docker

Feb 2023 – May 2023 · 3 mos · Warsaw, Mazowieckie, Poland

• Leading a backend team.
• Scope:
• Mentored and guided team members, enhancing their technical skills and fostering a collaborative environment
• Led backend initiatives, fostering cross-team communication, (frontend, product, leadership and design), with a focus on a clear contract between teams via GraphQL contract and integrations
• Previously: GetInData (acquired)

Oct 2022 – Feb 2023 · 4 mos · Warsaw, Mazowieckie, Poland

• Working on cloud-native Go backend microservices supporting house appraisal process in the US.
• Scope:
• Championed technology advancements, making informed trade-offs and setting up initial designs and proof of concepts}
• Developed cloud-native microservices in Golang on Kubernetes and GraphQL to support house appraisal processes in the USA (comprehensive test suites with unit and contract testing)
• Technologies:
• Go, Bazel (monorepo), Gitlab CI, Kubernetes (GKE), ArgoCD, Terraform, GCP, GraphQL, gRPC, Prometheus, Protobuf, Grafana, Loki
• Previously: GetInData (acquired)

Jul 2022 – Sep 2022 · 2 mos · London, England, United Kingdom

• Working on testing infrastructure for an internal mobile/web development framework.
• Accomplishments:
• Reduced overprovisioning of underutilized distributed machines by 55% halving the cost of system's maintenance
• Sped up continuous delivery from 24hrs to deploy to <2hrs
• Allowed for safe incident mitigation by rolling back an old version of an artefact in a matter of minutes (instead of a manual process)
• Implemented a cross-repository CI integration testing framework to test changes from one repository on the other repository
• Technologies:
• Hacklang, Buck, React, Typescript, Python, Bash, Bazel

Oct 2021 – Jun 2022 · 8 mos · Warsaw, Mazowieckie, Poland

• Involved in: SWE / DE / DevOps work.
• Project highlights:
• Designed complete instrumentation and monitoring solution on multicluster Kubernetes deployments using Grafana, Loki and Prometheus to collect and alert on incoming logs and metrics
• Worked on CI/CD with Gitlab & ArgoCD to enable automated delivery for data and product deliverables
• Designed data pipelines using DBT and orchestrated them using Airflow
• Technologies:
• Python, AWS, DBT, Github, Docker, Kubernetes, jupyter, jupyterlab, postresql, Jinja, Terraform, Airflow, Spark, Terragunt, Gitlab CI, Grafana, Prometheus, Loki, Helm, Helmfile, Promtail, GCP, GKE, ArgoCD
• AWS:
• S3, Lambda (+Docker), Sagemaker, EC2, networking, Redshift, Glue, Step Functions, IAM, SNS, SQS, ECS, Fargate, Cloudwatch (dashboards, metrics, logs, monitoring, alarms), cloudformation, CI/CD with Gitlab & Terraform, MWAA, API Gateway, OpenSearch, EKS,
• Previously: GetInData (acquired)

Jun 2021 – Aug 2021 · 2 mos · Dublin, County Dublin, Ireland

• Powering localization/translation of Microsoft Office products.
• Accomplishments:
• Implemented a solution for persisting correlation vectors in two disjoint systems for reporting end-to-end telemetry
• Redesigned business intelligence events reported from translations export flows to reduce data loss
• Technologies:
• Azure, PowerShell, C#, Cosmos DB

Mar 2021 – May 2021 · 2 mos · Munich, Bavaria, Germany

• Working in Google Account team.
• Accomplishments:
• Introduced Spanner stack with secondary indexes on free-form text data to support natural language understanding through Google's internal services which improved search results and good visits to Google Account settings page (https://myaccount.google.com/)
• Drove a new feature implementation through research, planning, implementation, experimentation and documentation phases in an enormous organization in a customer-facing product
• Technologies:
• Java, Javascript, Spanner, Bazel, Guice, protobuf

Oct 2020 – Feb 2021 · 4 mos · Luxembourg, Luxembourg

• Implementing a reliable, scalable, serverless microservice on AWS, with full CI/CD. The project was about diversity and inclusion.
• Accomplishments:
• Incorporated full continuous deployment with CDK to enable faster product iterations
• Built a server-less microservice from the ground up on AWS using Lambda, API Gateway, DynamoDB, AWS S3
• Technologies:
• AWS Lambda, AWS API Gateway, AWS DynamoDB, Java, Dagger, CDK, CloudFormation, AWS S3, TypeScript, JavaScript, AWS SNS, AWS RDS, CloudWatch, React, Redux, Sagas

Jul 2020 – Oct 2020 · 3 mos · Dublin, Ireland

• Driving databases migration project from IaaS to PaaS in Azure.
• Accomplishments:
• Analyzed, documented and ramped up on the existing infrastructure setup of deployment automation on Azure for IaaS.
• Designed, documented and delivered a comprehensive infrastructure (PowerShell code) for Azure SQL Managed Instances provisioning automation (ARM templates, Azure PS cmdlets).
• Redesigned database deployment automation scripts using ARM templates and PowerShell which reduced legacy code complexity.
• Rewrote a nodejs frontend application to C# using MVC to remove dependencies from the codebase.
• Technologies:
• Windows, Azure, PowerShell, C#, Javascript, Azure Automation, Azure Runbooks, Azure Hybrid Worker, Azure Key Vault, Azure networking

Mar 2020 – Apr 2020 · 1 mo

• Leading a team of three students.
• Overview:
• Planning and developing a product for a client in a team.
• Dividing tasks and work among the team.
• Helping to organise and optimise the workload.
• Attending business calls with clients, making weekly reports and quick overviews of accomplishments.
• Supervising the development of a product and gradually improving the product by implementing various ideas.

Oct 2019 – May 2020 · 7 mos

• Accomplishments:
• Implemented scalable backend servers.
• Designed and coded API for dynamic ML model swapping and configuring.
• Analyzed big data, and designed and overlooked ML models for price prediction.
• Overview:
• Built cruds and apis for back-end services.
• Worked with PostgreSQL.
• Implemented caching and ML models' fallback services.
• Technologies:
• Scala, Postgres, Docker, AWS, S3, Python (nlp, sklearn, matplotplib), Heroku, React, Terraform, Apache Zeppelin, Vault, Weka

Jul 2019 – Sep 2019 · 2 mos · Warsaw, Masovian District, Poland

• Metadata metrics team.
• Accomplishments:
• Implemented stored scripts functionality and cardinality
• query calls in open source elastic search scala client
• Planned, documented and designed external Swagger API for querying metrics metadata (~ 15 endpoints)
• Implemented auto merge tool for github using github actions and github API
• Technologies:
• Elastic Search, Scala, Spring, Swagger, Jenkins

Jul 2018 – Sep 2018 · 2 mos · Warsaw, Masovian District, Poland

• Autonomous team in order to develop a responsive analytics service with dashboards.
• Accomplishments:
• Wrote around 15 000 lines in first 2 months (worked solo on frontend)
• Designed and implemented a stunning UI, which you can view here (http://bit.ly/cosmoseDesign)
• Technologies:
• CSS, HTML, Angular 6, AWS

Aug 2017 – Aug 2017 · 0 mo · Cracow, Małopolskie, Poland

• Accomplishments:
• 1. Worked on products promotion videos.
• 2. Made a bundle promotion video.

Jul 2017 – Aug 2017 · 1 mo · Cracow, Małopolskie, Poland

• Accomplishments:
• 1. Researched the market in order to find suitable clients worldwide.
• 2. Automated the process above with macros.