Portfolio / CV

Jasmin
Keler

Engineering Manager  ·  Technical Leader  ·  Malmö, Sweden

0
Years Experience
0
Engineers Scaled
0
System Uptime
0
Throughput Increase

Results-oriented Engineering Manager with a proven track record of building high-performance teams, driving architectural modernisation, and delivering mission-critical systems at scale. Expert in aligning technical strategy with business objectives.

LinkedIn jasmin.keler
Location Malmö, Sweden
June 2023
— Present
Copenhagen, DK
ZeroNorth
Senior Software Architect / Technical Lead
  • Modernised legacy monolithic systems to an event-driven microservices architecture (EDA), resulting in a 30% increase in deployment frequency and reduced technical debt.
  • Led engineering implementation of ML/AI voyage optimisation models, contributing to a 15% reduction in fuel consumption and driving environmental sustainability.
  • Built the Fleet Telemetry service that ingests vessel events and pre-computes metrics, cutting platform load time from ~8s to under 1s.
  • Designed and built the notification delivery system from scratch — Go microservices on AWS (SNS/SQS) powering web and email notifications across the product.
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Sept 2022
— June 2023
Lund, Sweden
Qlik
Senior Software Engineer
  • Established technical standards for Golang microservices, enhancing code quality and maintainability across the engineering organisation.
  • Mentored junior developers; implemented best practices that reduced defect injection by 80% during QA cycles.
  • Diagnosed and resolved critical performance bottlenecks, yielding a 10% improvement in API response times.
  • Led migration of the platform's core event distribution infrastructure to a new message broker — zero downtime, no disruption to downstream services.
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Jan 2020
— Sept 2022
Malmö, Sweden
Boozt
Engineering Manager
  • Scaled the warehouse logistics engineering org to one team in Lithuania and three teams in Sweden (3 → 17 engineers, 96% retention over 7 years).
  • Led the full removal of the Element Logic system, replaced by a direct integration to the AutoStore Bin Task System — delivered in 3–4 months with major gains in picking and packing speed.
  • Integrated an automated shelf storage system (for perfumes and similar goods) and Toyota robotic forklifts into the Boozt WMS.
  • Architected a zero-downtime migration strategy for warehouse software relocation — 0% impact on fulfilment operations.
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Oct 2017
— Jan 2020
Malmö, Sweden
Boozt
Team Lead
  • Led a team of developers in Sweden building core e-commerce and logistics platform features.
  • Replaced the slow, unreliable Boxon FTP integration with a direct conveyor integration over OPC-UA — rewritten from C to Go — unlocking weight-based sorting and dynamic distributor-to-exit slide assignment.
  • Worked closely with the AutoStore R&D team on robot upgrades and platform-side changes to keep pace.
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Mar 2016
— Oct 2017
Malmö, Sweden
Boozt
Senior Software Engineer
  • Joined as the second engineer in the logistics department, building the core WMS from the ground up.
  • Built the AutoStore integration (Element Logic, file-based) into Boozt's WMS, powering the move from a fully manual warehouse to a new robotic one with zero items out-of-stock during the transition.
  • Wrote a custom low-level label printing service in ZPL for Zebra printers, significantly accelerating the packing flow.
  • Designed and refined picking strategy across the WMS, driving higher warehouse throughput and lower error rates.
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Jan 2015
— Feb 2016
Novi Sad, Serbia
Ivy Exec
Senior Software Engineer
  • Acted as the team's Solr search expert on a specialised job ads service built for the US market.
  • Re-engineered Solr search infrastructure, improving candidate matching relevance for 10,000+ hiring managers.
  • Optimised platform for high-concurrency US market traffic, ensuring stability during peak recruitment seasons.
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Feb 2012
— Jan 2015
Subotica, Serbia
Infostud
Software Engineer
  • Owned analytics for the job serving service, turning user behaviour data across 1M+ users into feature decisions — lifting engagement metrics by 5%.
  • Contributed to a ground-up rewrite of the job serving service in PHP and MySQL, migrating off the legacy codebase onto a cleaner foundation.
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Engineering Leadership
Team scaling, recruitment, mentorship, career development frameworks
System Architecture
Microservices, event-driven design, distributed systems, EDA
Cloud Infrastructure
AWS, GCP, Kubernetes — production-scale deployments
Golang & Python
Primary languages; ML integration and scripting in Python
Agile & SDLC
Scrum, Kanban, full software development lifecycle management
Databases & DevOps
MySQL, Postgres, ClickHouse · CI/CD · Shell Scripting
Beyond the code
When not architecting systems or mentoring teams, Jasmin pursues aviation as a licensed private pilot — a pursuit that mirrors his engineering mindset: precision, preparation, and the ability to navigate complexity under pressure.

He also contributes to IoT development and open source projects, staying close to the craft of building things that matter.
Languages
  • Serbian
  • English
  • Swedish
2010
College of Applied Science
Bachelor of Science  ·  Mechanical Engineering  ·  2007 – 2010
PhD
University of Novi Sad
PhD in Physics  ·  Novi Sad, Serbia
Henrik Lauritzen
VP of Engineering · ZeroNorth
henrik.lauritzen@zeronorth.com
Bibi Perntz
Lead · Qlik
bibi.perntz@qlik.com
Tobias Sjölin
CTO · Boozt Fashion Logistics
tsj@boozt.com