>git log --oneline
# 14+ years of professional experience
short version
The /cv page shows the same experience in a shorter layout.
~/work/scayle.mdHEAD
SCAYLE
3 yr·Hamburg, Germany - Remote·1 promotion
Staff Engineer / Team Lead (Checkout)
1 yr 8 mopromoted
Lead the checkout team and stay hands-on with backend, platform and architecture for a multi-brand commerce platform.
highlights
★Lead a 7-person checkout team: 4 senior developers, 1 QA and 1 product owner. Run releases, on-call quality, the security backlog and onboarding.
★Replaced resource-based autoscaling for checkout with traffic-based autoscaling (requests in flight, with KEDA) and capped work per pod. Live in production ahead of Black Friday 2026. In a production load test, it handled 1,000 checkouts per minute for 10 minutes. 99.97% completed, none were dropped, and the service scaled out about 10× on its own.
★Led checkout through Black Friday 2025, with a peak of about 550 orders per minute and zero checkout downtime during the high-load period.
★Raised the largest basket from 75 to 500 unique configured items in load tests. Ran 15+ measured load-test rounds with Blackfire and Datadog. Each round found the next bottleneck. One round alone cut a 500-item checkout time by 44%.
★Designed the plan to separate checkout from the legacy order system, so that its outages and slowness will not stop customers from paying.
★Designed and built the A/B testing backend and conditional delivery fees. Both are live. Wrote 30+ design documents and technical proposals in total, covering shipping, payments, promotions and API contracts.
★Owned checkout reliability. Rewrote the monitoring-duty process, checked every SLO against what Datadog really measured, and wrote 15+ incident reports with fixes. Cut response times by 100–270 ms per checkout step.
★Use AI coding agents daily, with review rules for their output. Wrote an internal guide on where AI gets things wrong.
Senior Software Engineer (Checkout)
1 yr 4 mo
Hands-on backend engineer on high-throughput, headless checkout for multi-tenant commerce.
highlights
★One of the key engineers who built the new checkout API on Laravel and RoadRunner. In 2024 it replaced the old checkout for every brand on the platform. Led many of its design decisions.
★Ran the Black Friday 2024 load test. Checkout passed well above its goal.
★Built payment and delivery features: payment provider integrations, express checkout, loyalty points, addresses and pickup points.
★Took on checkout on-call. This led to observability and error-reduction work that was part of the reason for my promotion.
Projects
-SCAYLE Commerce Engine - platform behind 200+ enterprise online shops such as Harrods, Deichmann, Levi's, FC Bayern and Manchester United
Languages
PHPGoTypeScript
Frameworks
LaravelLaravel OctaneSymfonyDoctrineReactRedux
Databases
RedisMySQL
Infrastructure
KubernetesKEDARoadRunnerFrankenPHPKubernetes HPAHelmDockerAWSSQSSNSTerraformDatadogDatadog APMBlackfirek6GitLab CITrivy
Practices
gRPCOpenAPIoasdiffPHPUnitJestCypressPlaywright
AI tools
Claude Code
~/work/anwaltde.md2023-12
anwalt.de
3 yr 2 mo·Nuremberg, Germany - Remote·1 promotion
Senior Software Engineer Team Lead
1 yr 1 mopromoted
Led a small platform team and stayed hands-on with backend, DevOps and architecture for Germany's largest legal marketplace.
highlights
★Led a 3-person team that built delivery and platform foundations. Other teams adopted them.
★Led modernization of database migrations, AWS infrastructure and deployable code patterns in a legacy codebase.
★Improved CI/CD and deployment safety with the DevOps team.
★Mentored engineers through code review and shared engineering practices.
Senior Software Developer
2 yr 1 mo
Senior backend and full-stack engineer on search and marketplace features.
highlights
★Rebuilt anwalt.de search on Elasticsearch with GraphQL, geolocation, aggregations and range filters, for a marketplace with 4M+ monthly users.
★Migrated legacy code into services that are easier to maintain.
★Earned promotion to the lead role after the search rebuild.
Projects
-anwalt.de - Germany's largest legal marketplace with 20,500+ lawyers and 4M+ monthly users
Languages
PHPGoTypeScript
Frameworks
LaminasVue.js
Databases
MySQLElasticsearch
Infrastructure
AWSDockerKubernetesNew RelicBitbucket PipelinesSQSLogstashKibanaTerraformEC2S3RDSLambdaBugsnagAlgolia
Practices
RESTGraphQLPHPUnitJest
~/work/solutionlab-production.md2020-12
SOLUTIONLAB PRODUCTION
3 yr 3 mo·Vilnius, Lithuania - Hybrid·1 promotion
Senior Software Engineer Team Lead
3 yrpromoted
Team lead and hands-on engineer for Atobi and other retail products, at a dev house for startup and enterprise clients.
highlights
★Led the migration of Atobi from a prototype stack to a Laravel API, a React frontend and mobile apps.
★Designed a reusable gamification system for engagement and calls to action. Multiple products used it.
★Scaled the team from 3 to 10 engineers. Turned client product ideas into technical plans.
★Built offline-first and real-time retail app features for enterprise clients.
Senior Web Developer
3 mo
Senior backend engineer on a retail startup account at a dev house.
highlights
★Joined to build backend services for a retail startup and moved into the lead role within two months.
Projects
-Atobi - retail employee platform for brands like Nike and PVH Nordic
-EffectiveRetail - all-in-one retail management solution
Languages
PHPJavaScript
Frameworks
LaravelPhalconReactReact NativeReduxjQuery
Databases
MySQLRedisSQLite
Infrastructure
AWSDockerOneSignalJenkinsLaravel NovaLaravel QueuesSentryTerraform
Practices
RESTAgileSCRUM
~/work/olympic-casino-group-baltija.md2017-11
Olympic Casino Group Baltija
11 mo·Vilnius, Lithuania - On-site
Full Stack Engineer
11 mo
Full-stack engineer on betting systems with a focus on correctness, latency and transaction handling.
highlights
★Built features for real-time betting products with strict rules for financial correctness.
★Worked under a stricter TDD culture than most web teams. This improved how I handle safety and regression risk.
Projects
-Olybet - online sports betting platform
Languages
PHPJavaScript
Frameworks
LaravelVue.js
Databases
MySQLRedis
Infrastructure
DockerKubernetesJenkinsBitbucket
Practices
RESTTDDPHPUnit
~/work/uab-inlusion-netforms.md2017-01
UAB inlusion Netforms
1 yr 4 mo·Vilnius, Lithuania - On-site·1 promotion
Senior Software Engineer Team Lead
1 yrpromoted
Team lead for distributed ERP, CRM and cross-platform projects for international clients.
highlights
★Led a distributed team of 10 engineers on ERP and CRM projects for web, mobile and desktop.
★Owned architecture and delivery for enterprise products, including product strategy and project leadership.
+2 expanded scope
+Led distributed engineering work across the full project lifecycle.
+Designed ERP and CRM systems and stayed involved in the implementation.
Senior Software Engineer
4 mo
Senior full-stack engineer for enterprise clients.
highlights
★Moved from senior engineer to the lead role in about three months.
core scope
•Developed full-stack web applications and APIs for enterprise clients.
Projects
-Columbina - enterprise ERP system
-Olivia - CRM platform for sales teams
Languages
C#PHPJavaScript
Frameworks
.NETLaravelVue.jsXamarinYii2ASP.NET MVC
Databases
MySQLMSSQL
Practices
RESTAgileSCRUM
~/work/uab-integrus.md2015-11
UAB Integrus
1 yr 1 mo·Vilnius, Lithuania - On-site
Full Stack Engineer
1 yr 1 mo
Full-stack engineer on warehouse and logistics systems for automotive e-commerce.
highlights
★Built warehouse workflow and shipping integrations for an automotive spare-parts commerce platform.
•Developed logistics automation and internal workflow systems.
•Integrated external shipping providers such as DPD, DHL and UPS.
Projects
-Ecu.de - automotive spare-parts e-commerce and warehouse platform
Languages
PHPJavaScript
Frameworks
LaraveljQuery
Databases
MySQL
Practices
RESTBootstrapSASS
~/work/itlogas-jsc.md2014-10
Itlogas JSC
9 mo·Vilnius, Lithuania - Remote
Ruby on Rails Developer
9 mo
Rails developer on a campaign and voter-registration platform.
highlights
★Built full-stack Rails features for a voter registration and campaign management system.
•Built and maintained Rails product features.
Projects
-Voter registration and campaign management platform
Languages
RubyJavaScript
Frameworks
Rails
Databases
PostgreSQL
Infrastructure
Capistrano
Practices
RESTRSpec
~/work/profectus-novus.md2014-02
Profectus Novus
11 mo·Vilnius, Lithuania
PHP Web Developer
11 mo
Early-career PHP engineer in SharePoint-based enterprise and government environments.
highlights
★Built a government education resource-sharing platform inside a SharePoint enterprise setup.
•Developed PHP applications that integrate with SharePoint workflows and data.
Projects
-Government education resource-sharing platform
Languages
PHPJavaScript
Frameworks
CakePHPjQuery
Databases
MySQL
Infrastructure
SharePoint
>cat education.md
# Education
~/education/bachelor's-degree.md2015
Vilniaus Universitetas
4y·Vilnius, Lithuania