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Principal Java Developer

Sigma Software · Kyiv, Kyiv city, Ukraine · Remote

About Sigma Software

75 open jobs
  • Software & SaaS
  • 1,001–5,000 employees
  • London

Strong hiring record · median 39 days open

100100

Hiring signal

Actively hiring

Still listed on the employer's own board · How we score

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  • Still listed on the employer's own board

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Principal Java Developer at Sigma Software. We’ll keep it in your applied jobs, so you can see it later and be warned before applying to the same employer twice.

  • Participate in presales activities, discovery sessions, technical workshops, tenders, and RFI/RFP analysis.
  • Translate business requirements into scalable technical solutions and implementation strategies.
  • Design enterprise-level architectures for Java-based distributed systems and microservices platforms.
  • Prepare technical proposals, estimations, architecture diagrams, delivery assumptions, and implementation roadmaps.
  • Define technology stack, infrastructure approach, integrations, security principles, and team composition.
  • Present and defend technical solutions during Customer discussions and stakeholder meetings.
  • Support Sales and Delivery teams during presales and project initiation phases.
  • Lead technical project start-up activities and transform high-level concepts into actionable implementation plans.
  • Establish architecture standards, engineering guidelines, and development best practices.
  • Guide engineering teams during the first delivery stages and support onboarding and technical interviews.
  • Conduct architecture and code reviews to ensure scalability, maintainability, and security compliance.
  • Resolve complex technical challenges and mentor Senior and Lead Engineers.
  • Drive technical decision-making while balancing business goals, delivery timelines, and quality expectations.
  • 5+ years of software engineering experience with strong technical leadership responsibilities.
  • Strong hands-on expertise in Java ecosystem development.
  • Deep knowledge of Spring and Spring Boot.
  • Strong understanding of microservices and distributed systems architecture.
  • Experience designing and implementing REST APIs and event-driven systems.
  • Practical experience with Kafka or similar messaging technologies.
  • Experience with relational and NoSQL databases.
  • Strong cloud platform experience with AWS, Azure, or GCP.
  • Experience with Docker, Kubernetes, CI/CD pipelines, and infrastructure automation.
  • Understanding of application security, monitoring, logging, and observability practices.
  • Experience working with incomplete or ambiguous requirements and converting them into technical solutions.
  • Experience participating in presales, discovery phases, solution proposals, or tender processes.
  • Strong estimation and solution design skills.
  • Excellent Customer-facing communication and presentation skills.
  • Ability to independently drive technical initiatives and take ownership.
  • Upper - Intermediate English level.

Skills

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