Full Stack Software Engineer

We’re hiring a Full Stack Software Engineer to join our growing global team at Helios, an early-stage HR tech SaaS startup revolutionizing how businesses manage global payroll, HCM, and workforce operations.

As a full stack developer, you’ll work across the stack on critical platform features—from backend APIs to frontend UI—helping to shape scalable, enterprise-grade systems with a strong focus on automation, AI integration, and high-performance architecture. You’ll collaborate closely with product managers, designers, and other engineers in a fast-paced, highly agile startup environment.

What You’ll Do

• Design, develop, and maintain core platform features across the frontend and backend


• Contribute to technical decisions around architecture, scalability, and reliability


• Collaborate with product, design, and QA teams to deliver seamless user experiences


• Write clean, reusable, and testable code (unit, integration, and E2E testing)


• Participate in code reviews, sprint planning, and daily standups


• Help optimize platform performance, security, and data integrity for global use


• Contribute ideas to improve platform usability, automation, and developer workflows

Tech Stack We Use

• Frontend: React, TypeScript, Next.js


• Backend: Node.js, Python, Express, PostgreSQL, REST APIs, GraphQL


• DevOps: AWS, Docker, CI/CD (GitHub Actions), Kubernetes (bonus)


• Other: Jira, Git, Figma, Notion

What You’ll Bring

• 3–5 years of experience in full stack software development in SaaS or enterprise environments


• Proven experience with modern JavaScript frameworks (React/TypeScript) and backend services (Node.js or Python)


• Experience working in fast-paced, early-stage startups and agile teams


• Strong understanding of RESTful services, relational databases, and API design


• Comfort working in a distributed, async-first culture


• Ability to write maintainable, scalable, and secure code in a high-growth environment


• Excellent communication and cross-functional collaboration skills

Nice to Have

• Experience building HRIS, global payroll, or compliance-driven platforms


• Exposure to cloud platforms (AWS preferred)


• Experience working with authentication/authorization (OAuth, SSO, etc.)


• Familiarity with internationalization (i18n), role-based access control, or GDPR compliance

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