Senior Software Engineer - Early-Stage AI Core, Equity

Alder; Newton (MA); On-site; USD 160,000 - 175,000; Full time

Benefits offered by this job

Equity

Competitive compensation

Job summary

Alder is redefining how aging care is delivered by building scalable, AI-augmented applications at e-commerce-scale. As one of our first core engineers, you will own architecture decisions and help scale our systems and team from day one.

Join a fast-moving startup and collaborate directly with the CTO, founders, and product teams to deliver high-impact capabilities that shape the product and culture. The role offers substantial ownership, rapid growth, and equity potential.

Qualifications

• Strong full-stack experience with Java (Spring Boot, Micronaut, or equivalent) and React (or similar frontend frameworks).
• Deep understanding of scalability in distributed systems, performance optimization, caching, and database design.
• Hands-on AWS experience (EC2, Lambda, DynamoDB, S3, etc.) and DevOps best practices.
• Self-starter mindset with autonomy, ownership of outcomes, and speed.

Responsibilities

• Design and build end-to-end features across the stack (React frontend, Java-based backend, AWS infrastructure).
• Architect scalable systems capable of handling high user traffic and complex data flows.
• Leverage AI tools (Claude Code, Copilot/Codex, custom LLM integrations, etc.) to augment and write, test, and ship code faster and smarter.
• Collaborate closely with CTO, founders and product to define and deliver new capabilities.
• Drive technical excellence to improve code quality, scalability, observability, and developer velocity.
• Shape our engineering culture through mentorship, tooling choices, and processes that balance speed and quality.

Skills

Java

Spring Boot

React

AWS

DevOps

AI-assisted development

Job description

Alder is redefining how aging care is delivered by building scalable, AI-augmented applications at e-commerce-scale. As one of our first core engineers, you will own architecture decisions and help scale our systems and team from day one.

Join a fast-moving startup and collaborate directly with the CTO, founders, and product teams to deliver high-impact capabilities that shape the product and culture. The role offers substantial ownership, rapid growth, and equity potential.