Professional Experience (15+ years)
Clearlaw.ai
Staff Engineer at QuantumSoft for Clearlaw.ai
Mar 2025 — Mar 2026 (1 year)
Modules
- Extracted facts and norms manager
- Multitenant contract fact extraction and LLM enrichment service
- Multitenant prompt-config and DSL transformer layer
- Standalone on-prem solution
Responsibilities
- Collaborated directly with CEO and CTO on technical strategy, shaping the roadmap for a new product line and on-prem deployment offering
- Designed and built a new product line — backend, public and backoffice APIs, Scala.js frontend integration, and CI/CD pipelines — expanding the platform from 1 service to 5
- Grew the codebase from 1 Scala module to 4 projects with 30+ shared modules through incremental extraction — accelerating new product development, enabling parallel compilation, cross-product code reuse, and focused context boundaries for AI coding agents
- Reduced legacy CI/CD pipeline time from ~60 minutes to ~5 minutes by eliminating self-hosted runners and simplifying image builds on GitHub Actions, cutting on-demand EC2 costs and removing a dependency on a part-time DevOps resource
- Reviewed PRs across a 6-person engineering team, mentoring on code quality, idiomatic Scala, and architectural consistency
- Adopted Claude Code as an AI coding agent, achieving ~2–3× development speed on the backoffice application
- Adopted ScalaSQL as a modern, transparent SQL layer in place of Quill — making database code significantly more robust with predictable query semantics, clearer compile-time errors, and easier debugging
- Architected an on-prem standalone deployment mode with abstracted source/sink interfaces, allowing clients to run ML pipelines using AWS Bedrock, with horizontal scaling via message queues — designed for single-client delivery but modular enough for reuse
- Added Scala Native support for the standalone deployment, achieving ~100× cold start improvement (from ~5s on JVM to under 50ms) — critical for on-prem environments where fast container scaling and message queue–driven workloads demand near-instant startup
- Operated cloud infrastructure on AWS — S3, Bedrock, SQS, ECS, ECR
Technologies: Scala, ZIO, tapir, Scala Native, Scala.js, Laminar, PyTorch, NLTK, Prolog, Logtalk, Python, Kafka, AWS, Claude Code, scalasql, Quill, zio-kafka, zio-aws, iron, Flyway, asyncio, Protobuf, PostgreSQL, GitHub Actions, Docker, AWS S3, AWS SQS, AWS SNS, AWS ECS, AWS ECR, AWS Bedrock
Performi.ca
Engineering Manager at QuantumSoft for Performi.ca
Jul 2022 — Mar 2025 (2 years 8 months)
Modules
- Multitenant Analytics Platform
- Data Ingestion Agents
- Custom client Integrations
- Main web application (legacy, hosted per client)
Responsibilities
- Led a cross-functional team of up to 9 (backend, frontend, full-stack, UI/UX, QA, DevOps), reporting directly to CEO and Head of Product
- Contributed to doubling the client base from 3 to 6 — participated in technical pre-sales, led client integrations, and managed ongoing delivery
- Achieved SOC 2 certification, leading the engineering team through the audit process
- Designed and built a multitenant analytics platform in Scala (cats-effect, http4s, tapir) — ClickHouse-based ingestion, graph computation, and caching layer bridging multitenant and legacy per-tenant databases on AWS Aurora PostgreSQL
- Built a WebSocket-based admin monitoring panel on top of the multitenant integration — streaming metrics from multiple app instances with progressive table rendering, giving operators a usable view of results before every instance had responded
- Migrated data ingestion from a monolith periodic task to ~10 self-hosted Python agents (3.13, full pyright coverage), shifting sensitive data access control and audit to the client side
- Maintained same-business-day incident resolution across all client environments
Technologies: Scala, cats-effect, tapir, http4s, WebSocket, Doobie, otel4s, Scala.js, Laminar, Python, Django, DRF, PostgreSQL, Clickhouse, Redis, AWS Aurora, Docker, AWS, AWS ECR
Pricing & Rebate Engine
Tech lead at QuantumSoft for anagram.care
Jan 2022 — Jul 2022 (6 months)
Modules
- Scala backend for pricing
- CI and DB management
- Third-Party API integration
Responsibilities
- Led a 5-person backend team building a pricing engine for eyewear (frames, lenses, coatings) with complex discount structures including manufacturer volume bonuses
- Improved codebase quality by introducing typeclass-based error handling, enforcing referential transparency, and integrating tracing (trace4cats)
- Achieved 4× CI speedup by isolating test suites into separate DB schemas, enabling parallel execution both locally and on GitHub Actions
- Built custom JSON assertion matchers using Monocle, significantly improving test readability and maintainability
- Integrated third-party APIs (Google Sheets, manufacturer pricing panels) for dynamic pricing data
Technologies: Scala, tapir, cats-effect, fs2, http4s, trace4cats, PostgreSQL, circe, Docker, GitHub Actions
Data Platform
Senior Platform engineer, Sub-team lead at QuantumSoft for Invitae
Jun 2018 — Dec 2021 (3 years 6 months)
Modules
- Kafka-based Integration for event-driven services
- Infrastructure-as-a-code platform for other teams
- Third-Party API integration
- ETL & reports for partners
Responsibilities
- Led a 5-person sub-team within the data platform group, replacing fragmented service communication with a unified event-driven architecture
- Designed a Kafka topics DSL — a declarative, infrastructure-as-code approach to 300+ topic definitions across 24 domain modules, including schema (Scala ADTs), Kafka parameters (retention, partitions), and ACL policies per service
- Built a schema evolution pipeline with automated compatibility checks and human-readable diffs on every PR, making data contract changes safe and reviewable
- Implemented cross-language code generation from Scala ADT definitions, producing typed client libraries for Kotlin, Python, and TypeScript — used by 5+ teams across the company
- Built a custom cron Kafka connector for trigger-based stream processing, with replay and explicit event testing support
- Integrated Prometheus metrics for Kafka Streams internal RocksDB state stores, enabling observability into KV storage performance
- Introduced Debezium CDC pipelines, enabling other teams to build event-driven services (e.g. notification service) on top of database changes
- Created shared Scala library components (tracing, metrics, feature flags) for internal services
Technologies: Scala, cats-effect, fs2, http4s, avro4s, magnolia, Kafka, Kafka Streams, Kafka Connect, Confluent Avro, Debezium, Spark, Kubernetes, Terraform, Snowflake, Docker, Helm/Flux
ClearLaw
Team Lead, Mentor at QuantumSoft for ClearLaw
Jun 2018 — Nov 2018 (5 months) — part-time
Modules
- SaaS solution for AI & ML based contract management
Responsibilities
- Communicated with stakeholders
- Designed architecture from scratch
- Helped with sprint management
- Mentorship and code review
- Development of core components and the app prototype
- Implementation plans
Technologies: Python, asyncio, GRPC, AWS, AWS SQS
Salesforce API integration
Senior Developer at QuantumSoft for Invitae
Oct 2017 — Jan 2019 (1 year 3 months)
Modules
- Inter-service data synchronizations
- Third-party integration for a genetic tests company
Responsibilities
- Feature delivery
- Maintaining legacy code
- Performed significant code cleanups and notable refactorings
- Bumped team productivity & code quality by adding type-safe checks into JavaScript
Technologies: Node.js, Flow, Folktale.js, RabbitMQ
Healthcare Providers SPA
Tech lead (5 members), Full-stack at QuantumSoft for Invitae
Aug 2016 — Sep 2017 (1 year 1 month)
Modules
- Dedicated web interface for healthcare providers at a genetic tests company
Responsibilities
- Communicated with stakeholders
- Designed API and DB
- Added reusable solutions for type-safe API
- Significantly improved performance
Technologies: Django, TypeScript, JsonSchema, React, Redux
Family History Tool
Team lead (9 members), DevOps, Full-stack at QuantumSoft for Invitae
Mar 2015 — May 2017 (2 years 2 months)
Modules
- SaaS web-based tool for genetic counselors
- IPad app
- Helps to track patient pedigrees
- Provides a cancer risk assessment
- Free-to-use. Leads clients to billable orders on the main site
Responsibilities
- Communication with stakeholders, release demo sessions
- Milestone management
- Design and implementation of tech-stack evolution (adopting to company standards) after the acquisition
- Integration with the main product
- Feature delivery, bug-fixes
Technologies: Django, TypeScript, React, Ansible, R, MySQL, Docker, PHP, Python, Redux
Analytics Dashboard
Architect, Consultant at ZoomTV Group
Aug 2016 — Nov 2016 (3 months) — part-time
Modules
- SmartTV on-demand & live channels network.
- Statistics and tracking module
Responsibilities
- Architecture design from scratch
- Consulting
- Implementation plan
- Code-review
Technologies: PHP, MongoDB, RabbitMQ
MoceanMobile ads platform
Backend, SQL at BitWorks for Pubmatic.com
Jun 2014 — Dec 2014 (6 months)
Modules
- Statistics and ETL pipelines for high-load project
- Data integration from multiple sources
Responsibilities
- Managing advanced SQL (triggers & stored procedures, partitioning, window functions)
- ETL optimizations
- Solving scalability problems
Technologies: JBoss Teiid, Hive, PostgreSQL, Pentaho Kettle, Python, Git
Accounting & Personnel
Middle Full-Stack at Bars Group
Sep 2013 — May 2014 (8 months)
Modules
- Web-based platform for accounting and managing personnel records
- Cloud solution for municipal organizations
Responsibilities
- Contributed to core reusable components
- Performed notable refactorings and code cleanup
- Helped with CI
Technologies: Django, PostgreSQL, ExtJS, Redmine, Mercurial
ETL & FraudTool
Junior BigData, Junior Full-stack at BitWorks for Moceanmobile.com
Feb 2011 — Sep 2013 (2 years 7 months)
Modules
- Custom Map/Reduce aggregations on top of Hadoop, ETL
- Web-based tool for analytic reports, fraud analysis in mobile ads network
Responsibilities
- Optimized several Map-Reduce pipelines
- Implemented custom UDFs for Hive and Pig languages
- Designed web application from scratch
- Implemented app prototype
- Completed app deployment and documentation
Technologies: Django, PostgreSQL, Java, Hadoop, Backbone.js, Bootstrap, Git
VPN & VPS Products
Junior Full-stack at Zzzing LLC
Jun 2010 — Feb 2011 (8 months)
Modules
- Onsite products for provider clients:
- Traffic/billing reports
- IPTV-to-web TV streaming
- File sharing desk with online preview
Responsibilities
- The only developer in the team working on small web projects aiming at clients of local VPN and hosting provider
- Communication with a web designer, DevOps, and product owner (which was also my tech mentor)
- Architecture, design, and implementation of features
Technologies: PHP, JavaScript, FFmpeg, CSS, SVN
Open Source Contributions
The Scala 3 compiler, also known as Dotty
- Bug Report: opaque types, pattern matching, inline, pickling
- PR: Tuple.mapKind method
Lightweight, modular, and extensible library for functional programming
- Merged PR: EitherT and IorT constructors from Option
- Merged PR: OptionT combinators for effectful Boolean
- Merged PR: Kleisli.localK FunctionK helper
A minimal, idiomatic Scala interface for HTTP
- PR: message failure responses
Compositional, streaming I/O library for Scala
- Merged PR: interleaveOrdered — combine sorted streams (merge-sort)
- Merged PR: fix interleaveOrdered effectful cases
The pure asynchronous runtime for Scala
- Merged PR: Ref.empty Monoid-based shortcut
Rapid development of self-documenting APIs
- Merged PR: Validator.derivedEnumeration for sealed traits
- Merged PR: fix name collision in macro
- Merged PR: refactor ServerRunner to use Resource
- Merged PR: fix deprecation warnings
- Merged PR: update Iron to 3.0.0
Refactoring and linting tool for Scala
- Bug Report: various issues
- Feature Request: removeUnused for Scala 3
CSV Reader/Writer for Scala
- PR: add Scala Native platform
Modular search for Django
- Merged PR: fix index re-obtaining for ElasticSearch
- Merged PR: fix deep attributes through m2m relation
Command-line tool to interact with the Scala language
- Merged PR: support links in using file directive
Use the world of Python from the comfort of Scala
- Feature Request: multiple Python interpreters
Strong type constraints for Scala
- Merged PR: RefinedType.unapply enhancements
- Merged PR: fix NPE in Mirror[T].ops
Avro schema generation and serialization for Scala
- Merged PR: fix SchemaFor with nested union types
- Merged PR: fix schema macro
- Bug Report: enums, ADTs
Type-safe Scala ORM for SQL databases
- Merged PR: FP-friendly resource-block transaction API
- Merged PR: multiple expressions in DISTINCT ON
Logging framework for Cats
- Merged PR: withModifiedContext for StructuredLogger
Easily use and document any config from anywhere in ZIO apps
- PR: cross-platform derivation and magnolia for Scala 3
Manage your Kafka ACLs at scale
- Merged PR: authorizer on AdminClient, update Scala and sbt
Change data capture for a variety of databases
- Merged PR: separate storageExists() method to support manual topic creation
ClickHouse open-source columnar DBMS
- Merged PR: documentation improvements for aggregate functions
Refinement types for Scala
- Merged PR: pureconfig module for Scala 3
Software specifications for Scala
- Merged PR: fix reporting wrong initial seed for scalacheck
- Bug Report: fatal errors make test run forever
Composable command-line parsing for Scala
- Merged PR: list enumeratum choices for invalid argument
Easy, fast, transparent generic derivation of typeclass instances
- Merged PR: resolve alias for context typename
- Merged PR: fix Array name collision
Official Scala documentation
- Merged PR: style cleanup for value class restriction overview
Telegram Bot API wrapper for Scala
- Merged PR: add missing SendAnimation request handler
Laminar bindings for SAP UI5 web components
- PR: Add UploadState.Complete
Technologies & Skills
Scala, ZIO, tapir, Scala Native, Scala.js, Laminar, PyTorch, NLTK, Prolog, Logtalk, Python, Kafka, AWS, Claude Code, scalasql, Quill, zio-kafka, zio-aws, iron, Flyway, asyncio, Protobuf, PostgreSQL, GitHub Actions, Docker, AWS S3, AWS SQS, AWS SNS, AWS ECS, AWS ECR, AWS Bedrock, cats-effect, http4s, WebSocket, Doobie, otel4s, Django, DRF, Clickhouse, Redis, AWS Aurora, fs2, trace4cats, circe, avro4s, magnolia, Kafka Streams, Kafka Connect, Confluent Avro, Debezium, Spark, Kubernetes, Terraform, Snowflake, Helm/Flux, GRPC, Node.js, Flow, Folktale.js, RabbitMQ, TypeScript, JsonSchema, React, Redux, Ansible, R, MySQL, PHP, MongoDB, JBoss Teiid, Hive, Pentaho Kettle, Git, ExtJS, Redmine, Mercurial, Java, Hadoop, Backbone.js, Bootstrap, JavaScript, FFmpeg, CSS, SVN