Christopher Gorski - Senior Software Engineer

Q: Where is Christopher based?

Christopher is based in Warsaw, Poland .

Q: What languages does Christopher speak?

Christopher speaks the following languages: English (Advanced), Polish (Advanced) .

Q: How many years of experience does Christopher have?

Christopher has at least 9 years of experience. During this time, Christopher has worked in at least 3 different roles and for 4 different companies . The average length of individual experience is 2 years and 2 months . Note that Christopher may not have shared all experience and actually has more experience.

Q: What is Christopher's latest experience?

Christopher's most recent position is Senior Software Engineer at Allegro .

Q: What companies has Christopher worked for in recent years?

In recent years, Christopher has worked for Allegro , Artisan AI , and AioCare .

Q: Which industries is Christopher most experienced in?

Christopher is most experienced in industries like Healthcare , Retail , and Banking and Finance . Christopher also has some experience in Information Technology .

Q: Which business areas is Christopher most experienced in?

Christopher is most experienced in business areas like Information Technology , Product Development , and Operations . Christopher also has some experience in Quality Assurance .

Q: Which industries has Christopher worked in recently?

Christopher has recently worked in industries like Information Technology , Healthcare , and Retail .

Q: Which business areas has Christopher worked in recently?

Christopher has recently worked in business areas like Information Technology , Operations , and Product Development .

Recommended expert

Warsaw, Poland

Experience

Apr 2024 - Present

2 years

Senior Software Engineer

Allegro

Re-platformed the checkout cluster to Spring Boot 3 (MVC) with Kafka + Outbox/Saga, halving hot-path p99 420 ms → 210 ms (-50%) at 6.5k rps; validated in Grafana + Datadog APM and k6 load runs.
Introduced Redis + Caffeine cache-aside for availability/pricing, cutting DB reads -38% and saving ≈$14k/quarter in IOPS; proven via RDS Insights, Redis INFO, and cost reports.
Delivered zero-downtime blue/green deploys (Argo Rollouts, PDBs, readiness gates) for pricing API, taking deployment failure rate 3.1% → 0.6% and MTTR 27 → 9 min; evidence in Argo + PagerDuty timelines.
Shipped OpenTelemetry traces + logs/metrics correlation across 12 microservices; cross-service debug time dropped 45 min → 12 min; measured in Jaeger/Tempo and on-call reports.
Frontend: migrated legacy catalog UI from AngularJS to Angular 17 micro-frontends and built a React promo-rules editor (module federation, RxJS query, React Hook Form); LCP p75 3.2 s → 1.9 s, CLS 0.14 → 0.04; verified by Lighthouse + Web Vitals.
Added feature-flagged A/B price rules (Unleash + Spring Boot starter) with Micrometer business counters; conversion on targeted SKUs +2.4%; experiment readout in internal experimentation platform.
GC and pool tuning (G1 → ZGC, Hikari), plus HTTP thread tuning; CPU -22%, container requests -18%, worth ≈$5.7k/month infra savings; shown in Kubernetes + Datadog dashboards.

Mar 2024 - Mar 2025

1 year 1 month

Senior Software Engineer

Artisan AI

Built a low-latency inference gateway (Spring WebFlux + Netty, gRPC) in front of GPU workers; p95 ~180 ms at 2.1k rps, 99.9% availability; validated via Prometheus SLOs, Grafana, k6.
Implemented RAG retrieval service (Java + pgvector + Redis Bloom) with re-rank; search F1 +13% and tail p99 520 ms → 260 ms; metrics from offline eval harness + APM traces.
Orchestrated async embeddings/batch jobs (Kafka, Spring Cloud Stream, Outbox/Inbox), eliminating duplicate work and lowering reprocessing costs -37%; confirmed by Kafka consumer lag + cost reports.
AI quality: added guardrails (prompt templates, input sanitization, semantic grounding, toxicity classifier) cutting hallucination rate -28% and policy violations -62%; measured by weekly eval set + human review.
Shipping/runtime: containerized models on Triton + KServe, GPU autobatching + dynamic concurrency; throughput +41% per A100 and unit cost -24%; numbers from Prometheus GPU/exporter + billing.
Security & compliance: mTLS, per-tenant quotas (Bucket4j + Redis), SBOM (Syft/Grype) + Cosign image signing; critical CVEs -92% in 2 quarters; trends from CI security gates.
Frontend: built a React admin console and Vue-based prompt/playground with latency charts, eval diff views, and feature flags; PR cycle time 3.4 → 2.1 days (-38%) and post-release integration bugs -41%; GitHub/CI analytics.
JVM footprint optimization (JLink, CDS, tiered compilation) and Alpine base; image size -48%, cold-start -35% for serverless workers; validated in registry stats + cold-start traces.

Oct 2021 - Feb 2024

2 years 5 months

DevOps Engineer

AioCare

Rolled out a Kubernetes platform (3 envs, 8 node pools) with Terraform + Helm + Argo CD, cutting deploy time 45 min → 7 min (-84%) and enabling ~20 prod releases/week; verified in Argo CD history and Jira releases.
Built progressive delivery (blue/green + canary 5%→25%→100%) on GitHub Actions → Argo Rollouts, reducing failed deploys by ~72% and MTTR 38 min → 11 min; confirmed via PagerDuty + Grafana incident timelines.
Introduced SLOs (p95 API < 250 ms, error budget 1%/30d) with burn-rate alerts; lifted API uptime to 99.95% over 12 months and cut MTTD 12 min → 3 min; Prometheus/Grafana dashboards as evidence.
Optimized cloud spend -28% YoY using HPA/VPA, spot nodes, storage lifecycle policies, and right-sizing; environment spin-up shrank 2 days → 2 hours with reusable Terraform modules; validated by Cost Explorer/Billing + CI timestamps.
Shipped end-to-end observability (OpenTelemetry traces, Prometheus metrics, Loki/ELK logs) and golden dashboards per service, lowering “unknown root cause” postmortems by ~60% and after-hours pages by ~50%; PagerDuty analytics + RCA tags.
Hardened SDLC for medical data: SBOM + image signing (Syft/Grype, Cosign), OPA/Gatekeeper policies, Vault/KMS secrets; reduced critical CVEs in images by >90% within 2 quarters; security scan trends used for proof.
Delivered DR runbooks and quarterly game-days achieving RPO ≤ 5 min and RTO ≤ 30 min via cross-region backups and infra-as-code restores; results documented in DR drill reports.

Jul 2016 - Sep 2020

4 years 3 months

Software Engineer

Spyrosoft

Designed, developed, and maintained enterprise and consumer-facing applications for multiple international clients, such as a fintech dashboard for BNP Paribas, an e-commerce platform for a retail client, and a healthcare management tool for a telemedicine startup; delivered scalable solutions using React, Angular, and Vue on the front end, with FastAPI, Django, Java, and Golang powering high-performance back ends, ensuring seamless integration, security, and excellent user experience.

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Healthcare, Retail, Banking and Finance, and Information Technology.

Healthcare

Retail

Banking and Finance

Information Technology

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Operations, and Quality Assurance.

Information Technology

Product Development

Operations

Quality Assurance

Skills

Programming Languages:

Java
Typescript/javascript
Python
Go
Sql

Frameworks & Libraries:

Spring Boot 3 (Mvc & Webflux/netty)
Grpc
Micrometer
Jpa/hibernate
Reactor/rxjava
Fastapi/django (Prior)
Node.js (Nestjs/fusion.js)
React
Angular
Vue

Cloud & Infrastructure:

Aws (Lambda, S3, Ec2, Eks Etc)
Gcp
Docker
Kubernetes

Database Technologies:

Postgresql
Mongodb
Mysql
Firebase
Redis

Message Queues & Real-time Systems:

Rabbitmq
Kafka
Websocket
Firebase
Sns

Security & Compliance:

Oauth 2.0
Jwt
Ssl/tls
Gdpr

Devops & Ci/cd:

Gitlab Ci/cd
Jenkins
Travis Ci
Docker
Kubernetes
Aws Lambda

Testing Frameworks:

Junit
Mockito
Jest
Cucumber
Postman
Selenium

Version Control & Collaboration:

Git
Github
Gitlab
Bitbucket
Jira
Confluence

Monitoring & Logging:

Prometheus
Grafana
Aws Cloudwatch
Datadog

Languages

English

Advanced

Polish

Advanced

Education

Oct 2014 - Mar 2016

Lublin University of Technology

Master’s Degree in Computer Science · Computer Science · Lublin, Poland

May 2010 - Sep 2014

Lublin University of Technology

Bachelor’s Degree in Computer Science · Computer Science · Lublin, Poland

Statistics

Experience

Total positions 4

Experience in Healthcare 6.5 y

Avg length 2 y 4 m

Longest experience 4 y 2 m

Expertise

Recent roles Senior Software Engineer, DevOps Engineer, Software Engineer

Main industries Healthcare, Retail, Banking and Finance

Main business areas Information Technology, Product Development, Operations

Qualifications

Highest degree Master

Profile

Created

December 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Christopher based?

Christopher is based in Warsaw, Poland.

What languages does Christopher speak?

Christopher speaks the following languages: English (Advanced), Polish (Advanced).

How many years of experience does Christopher have?

Christopher has at least 9 years of experience. During this time, Christopher has worked in at least 3 different roles and for 4 different companies. The average length of individual experience is 2 years and 2 months. Note that Christopher may not have shared all experience and actually has more experience.

What roles would Christopher be best suited for?

Based on recent experience, Christopher would be well-suited for roles such as: Senior Software Engineer, DevOps Engineer, Software Engineer.

What is Christopher's latest experience?

Christopher's most recent position is Senior Software Engineer at Allegro.

What companies has Christopher worked for in recent years?

In recent years, Christopher has worked for Allegro, Artisan AI, and AioCare.

Which industries is Christopher most experienced in?

Christopher is most experienced in industries like Healthcare, Retail, and Banking and Finance. Christopher also has some experience in Information Technology.

Which business areas is Christopher most experienced in?

Christopher is most experienced in business areas like Information Technology, Product Development, and Operations. Christopher also has some experience in Quality Assurance.

Which industries has Christopher worked in recently?

Christopher has recently worked in industries like Information Technology, Healthcare, and Retail.

Which business areas has Christopher worked in recently?

Christopher has recently worked in business areas like Information Technology, Operations, and Product Development.

What is Christopher's education?

Christopher holds a Master in Computer Science from Lublin University of Technology and a Bachelor in Computer Science from Lublin University of Technology.

What is the availability of Christopher?

Christopher is immediately available full-time for suitable projects.

What is the rate of Christopher?

Christopher's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.