Senior Java Developer

• Own the end-to-end technical architecture for a multitenant, high throughput messaging platform: event driven services, template rendering, document generation, deliverability, and channel expansion
• Define service boundaries, data contracts, and platform SLOs (latency, throughput, deliverability)
• codify resilience (idempotency, retries, backoff, circuit breaking) and correctness (deduplication, exactly once where feasible)
• Lead design reviews and drive architectural RFCs/decision records
• ensure documentation quality aligns with org guidelines
• Guide modernization (e.g., Java 21 and newer, security hardening, SDLC improvements like GitHub Actions CI)
• Partner with Product to translate roadmap themes into platform epics (capacity, compliance, channel enablement)
• sequence tech debt with product outcomes
• Elevate engineering standards, performance tuning, and observability (OpenTelemetry, metrics, logs, tracing)
• Collaborate with deliverability/infra teams on MTA configuration, SPF/DKIM/DMARC alignment, and reporting pipelines for at scale sending

• Deep expertise in Java and JVM performance
• significant experience designing event driven systems at millions per day scale
• Handson Spring Boot microservices, asynchronous messaging, API design, and data stores (SQL/NoSQL, caching), Google GCP experience
• Proven track record with HA, disaster recovery, multiregional patterns, and observability first design
• Knowledge of email/SMS ecosystems (MTA, deliverability, anti abuse, link tracking, templating, internationalization)
• Security and compliance awareness (PII, GDPR, CAN-SPAM), static analysis workflows (e.g., Veracode)
• Ability to influence across product/engineering
• excellent written design documentation
• Must possess a legal work permit in Poland

Experience enabling new channels (RCS/WhatsApp), running canary/feature flags, and cost/perf optimization on cloud Kubernetes

• 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