Principal Java Developer
Sigma Software7 hours ago
Remote, UkraineStaff+
Responsibilities
- 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 stacks, infrastructure approaches, integrations, security principles, and team composition.
- Present and defend technical solutions during customer and stakeholder discussions.
- Support Sales and Delivery teams during presales and project initiation phases.
- Lead technical project start-up activities and convert high-level concepts into actionable implementation plans.
- Establish architecture standards, engineering guidelines, and development best practices.
- Guide engineering teams during early delivery, onboarding, and technical interviews.
- Conduct architecture and code reviews for scalability, maintainability, and security compliance.
- Resolve complex technical challenges, mentor Senior and Lead Engineers, and drive technical decisions.
Requirements
- At least 5 years of software engineering experience with strong technical leadership responsibilities.
- Strong hands-on expertise in the Java ecosystem, including deep knowledge of Spring and Spring Boot.
- Strong understanding of microservices and distributed-systems architecture, REST APIs, and event-driven systems.
- Practical experience with Kafka or similar messaging technologies, relational and NoSQL databases, and cloud platforms.
- Experience with Docker, Kubernetes, infrastructure automation, application security, monitoring, logging, and observability practices.
- Experience converting incomplete or ambiguous requirements into technical solutions.
- Experience with presales, discovery phases, solution proposals, or tender processes.
- Strong estimation, solution-design, customer-facing communication, and presentation skills.
- Ability to independently drive technical initiatives and take ownership.
- Upper-intermediate English level.
Benefits
- Professional growth opportunities, a mature engineering culture, and the ability to influence projects from their earliest stages.
- Work on secure, reliable, scalable, and regulated public-sector digital platforms and enterprise modernization initiatives.
Tech Stack
Categories
Solutions Engineering
About Sigma Software
Sigma Software is a London-headquartered, privately held IT consultancy that designs and builds custom software for startups and enterprises. The company provides end-to-end services—engineering, web and mobile development, .NET/Java platforms, AR/VR, and UI/UX—delivered via outsourcing, managed teams, and consulting. Founded in 2002, it supports long-term product development and modernization projects across multiple industries for global clients.