Alex Kwiatkowski

Agentic Software Engineer

21 years focused on Senior Software Engineer · Barefoot Coders

Senior engineer building reliable software systems where AI and infrastructure move quickly without compromising reliability, observability, or execution quality.

Core skills: Rust • Python • Go • TypeScript • Agentic orchestration • LLM

Hiring snapshot

Career arc

21

Years building software that helps teams move faster

Projects shipped

1

Projects and side builds that prove outcomes

Best hiring fit

Rust • Python • Go • TypeScript

Start a conversation and we can align on outcomes before scaling up.

  • Steer stochastic agentic systems toward measurable business outcomes
  • 1 production-oriented projects with real business outcomes
  • Ensure secure operations for mission critical infrastructure

Experience

Senior Software Engineer

Barefoot Coders2026-02Present· Less than 1 month

Lead modernization partner helping teams modernize, migrate, and scale applications on GCP through practical execution plans and AI-enabled engineering practices.

Highlights

  • Lead application modernization engagements from legacy assessment through cloud-native execution, with measurable quality and reliability goals.
  • Facilitate Gemini & Antigravity classes for GCP customers to improve team velocity with AI-assisted workflows.
  • Build migration roadmaps that reduce risk while improving observability, deployment confidence, and team autonomy.

Senior Software Engineer

Subzero Labs2025-082026-02· 6m

Building web3 products for web2 audiences with a focus on practical AI-assisted developer workflows.

Highlights

  • Built agentic developer orchestration capabilities for team workflows.
  • Implemented a multi-network blockchain explorer experience.
  • Designed an EVM/SVM/Rialo cross-chain bridge.
  • Reduced onboarding friction for engineers working across multiple ecosystems.

Lead Software Engineer / Senior Staff Software Engineer

Mechanical Orchard2023-032025-07· 2y 4m

Led mission-critical modernization across Fortune 500 platforms, evolving from lead engineering execution to senior staff ownership of distributed systems and data integration initiatives.

Highlights

  • Led modernization of legacy COBOL, Db2, IMS, and z/OS systems into microservices platforms.
  • Built connectors for zFTP, z/OSMF, and Db2 ODBC integration.
  • Designed and delivered a mainframe MVS emulator for local test environments.
  • Co-designed a data integration layer with Apache Arrow serving raw enterprise formats.
  • Converted mainframe batch processing to GCP-based runtime patterns.
  • Built a mainframe-inspired JES log scanner for operational visibility.
  • Established a reliable GnuCOBOL build and extraction system with Nix flakes.
  • Drove engineering collaboration across business-critical transformations for Fortune 500 modernization.
  • Introduced reusable patterns for data tooling and enterprise batch migration.
  • Partnered with engineers to improve observability, reliability, and on-call readiness across critical platforms.

Chief Technology Officer / Co-Founder

Atlas.xyz2022-022023-02· 1y

Joined through incubator channels and led Atlas from concept through growth while shaping product strategy, team build-out, and execution discipline.

Highlights

  • Joined an incubator-backed environment and contributed cross-project engineering leadership.
  • Defined roadmap and PRDs for Atlas' core NFT platform in a startup incubation context.
  • Co-created Atlas, an NFT platform for aggregated insights, execution, and liquidity in tokenized markets.
  • Recruited and shaped quant, ML, data, and full-stack engineering talent.
  • Built a structured competitor matrix to drive product feasibility and roadmap decisions.
  • Designed Kafka-based real-time NFT valuation pipelines ingesting 30GB/day.
  • Delivered a mass image transformation and optimization service for NFT collection assets.
  • Launched Grafana/Prometheus observability for uptime and latency control.
  • Built and iterated a gas-efficient multi-venue aggregator contract model.
  • Transitioned into co-founder ownership while staying accountable for shipping and reliability outcomes.

Founding Engineer / Senior Software Engineer

Chainlink2018-032021-03· 3y

Helped shape protocol infrastructure, UI, and data reliability systems during formative years of the protocol and product.

Highlights

  • Maintained alerting systems monitoring on-chain/off-chain feeds for DeFi collateral risk.
  • Contributed to core Ethereum protocol implementation and Solidity design work.
  • Built core node UI/UX and API surfaces with Go, Node.js, TypeScript, and React.
  • Migrated ingestion services to Apache Kafka-based event pipelines.
  • Operated AWS CI/CD release cadences for production reliability.
  • Standardized acceptance and testing practices for robust release quality.

Founder

Fremantle Industries2017-11Present· 8y 3m

Founded and led open-source infrastructure, data tooling, and custom software work across financial and data-heavy systems.

Highlights

  • Built Keel, an Agentic SDLC management to minimize drift through planning, execution, and verification loops.
  • Built DuckDB C++ ODBC extension and maintained deterministically reproducible Nix toolchains.
  • Built Spoke, a universal data connector for broad integration patterns.
  • Built Tai, a composable market data and execution toolkit for trading workflows.
  • Built Prop, an open source trading platform for strategy research and operation.
  • Developed AI-aware reactive data pipelines and SQL-native exploration tooling.
  • Delivered client software across custom full-stack engagements.

Senior Software Engineer

Northpass2014-032018-02· 3y 11m

Built modern learning and data platforms with a focus on Ruby-based product delivery and database performance.

Highlights

  • Delivered LMS product modernization with Ruby on Rails, Ember, and React.
  • Tuned PostgreSQL for OLTP/OLAP workloads and bursty customer traffic.
  • Created acquisition readiness through repeatable CI/CD practice on Heroku.
  • Helped position team through acquisition by Gainsight.

Software Engineer & Project Lead

VMware / Pivotal Labs2011-052014-02· 2y 9m

Led client engineering across training, media, ticketing, and public sector systems in agile, high-velocity contexts.

Highlights

  • Built high-scale LMS and publishing workflows for McGraw Hill using Rails and Ember.
  • Delivered video management systems for Sony using Rails and Angular.
  • Delivered a secondary ticketing system for Ticket Evolution.
  • Built child welfare case management software for state government.
  • Led kickoff, planning, standups, and mentoring for teams adopting XP practices.
  • Supported acquisition transition to EMC and VMware.

Web Developer

NearMap Pty Ltd2009-062011-05· 1y 11m

Built map and geospatial product capabilities with strong frontend and API integration work.

Highlights

  • Reverse engineered Google Maps JavaScript API behavior and map rendering.
  • Built performant map interfaces with smooth Mercator tile experiences.
  • Implemented location APIs with OpenStreetMap using C# and Mono on Linux.
  • Supported acquisition integration into Thoma Bravo.

.NET Developer

Western Australia Department of Agriculture2009-042009-06· 2m

Delivered modernized CMS workflows and authentication systems for internal government operations.

Highlights

  • Replaced legacy CMS implementation with DotNetNuke.
  • Implemented LDAP integration for role-based access control.
  • Built enterprise modules with VB.NET, C#, and SQL Server.

.NET Developer

Ready Flowers Limited2006-032009-04· 3y 1m

Led early-career full-stack e-commerce engineering and high-volume transaction systems.

Highlights

  • Led e-commerce platform delivery using VB.NET, SQL Server, and jQuery.
  • Built transaction pipelines that processed millions of dollars in card transactions.
  • Established strong product reliability discipline in a founder-growth stage company.

Skills in action

AI + Data

5 capabilities
Agentic orchestrationLLMContext EngineeringApache ArrowDuckDB

Languages

14 capabilities
TypeScriptRustPythonCOBOLGoJavaElixirSolidityCC#VB.NETNixSQLJavaScript

Systems

13 capabilities
KubernetesDockerKafkaApache FlinkApache KafkaPostgreSQLDb2GCPAWSHerokuTerraformNixOSGitHub Actions

Frameworks & Platforms

13 capabilities
ReactRuby on RailsEmberPhoenixNode.jsPhoenixAngularEmber.jsRailsApache ArrowDocker ComposeGrafanaPrometheus

Education

Bachelor of Science (BSc) in Information Technology

Curtin University20032006

Signals reliability with systems thinking and measurable learning.