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Lead Java Engineer

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Infogain

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Location:
Poland , Kraków

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Category:
IT - Software Development

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Contract Type:
B2B

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Salary:

150.00 - 170.00 PLN / Hour
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Job Description:

We are looking for a Lead Java Engineer for our client, based in Kraków and surrounding areas. The project involves developing a large-scale communication platform in the travel industry that generates traveler documents and delivers time-critical notifications via email and SMS (over 1 million emails and approximately 100,000 SMS messages daily). The system is responsible for informing travelers about schedule changes, web check-in availability, and flight status (from 24 hours before departure up to the departure time), as well as collecting post-trip feedback.

Job Responsibility:

  • Own the end‑to‑end architecture for a multi‑tenant, event‑driven messaging and document‑generation platform
  • Define domain boundaries, APIs and message schemas
  • standardize idempotency, retries/backoff, and dead‑letter policies
  • Drive modernization (Java 17), cloud‑native deployments, observability (metrics, logs, tracing) and CI/CD governance
  • Set platform SLIs/SLOs for throughput, latency, and deliverability
  • lead capacity planning and performance tuning
  • Partner with Product to translate roadmap themes (e.g., new channels) into epics and technical milestones
  • de‑risk delivery
  • Champion security and compliance (PII, GDPR, CAN‑SPAM) and hardening (static analysis, dependency hygiene)
  • Mentor engineers through design reviews, architecture documents and hands‑on guidance

Requirements:

  • Extensive Java expertise and deep knowledge of distributed systems and microservices at high scale
  • Hands‑on Spring Boot, asynchronous messaging API design, caching, and SQL/NoSQL data stores
  • Proven experience with HA/DR patterns, multi‑region architectures and cost/performance optimization
  • Familiarity with email/SMS domains (MTA integration, SPF/DKIM/DMARC, sender reputation)
  • Excellent technical communication and decision‑record documentation
  • Must possess a legal work permit in Poland

Nice to have:

  • Experience introducing new channels (e.g., WhatsApp/RCS) and feature‑flag/canary strategies
  • Background in document templating/rendering pipelines and internationalization
What we offer:
  • Hybrid work model combining office & remote work
  • Attractively located office with collaboration spaces
  • Onsite parking space for employees
  • Referral program with financial bonus
  • Life Insurance
  • Budget for development (including language courses and others), clear career path with the possibility to gain experience in international environment
  • Access to internal Learning Platform with multiple trainings oriented for professional growth
  • Access to MyBenefit platform (Multisport included)
  • Team Building activities
  • Charity initiatives
  • Working environment promoting diversity and inclusion
  • Private medical care - Platinum Package

Additional Information:

Job Posted:
March 22, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
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