Senior Software Engineer

Title: Senior Software Engineer

Job Type: Contract

Contract Length: 6+ months

Pay Range: $70–$80/hr

Start Date: ASAP

Location: Westbrook, ME (Hybrid 2x per week)

Our client, a leader in the diagnostics and healthcare technology industry, is looking for a skilled Senior Software Engineer to join their team for a 6+ month engagement. This project involves shaping the platform powering their diagnostic data services, specifically focusing on building and maintaining the APIs that deliver reliable, performant data to internal teams and external partners. This is a high-impact role that requires a self‑motivated professional who can hit the ground running, design robust systems, and deliver results quickly in a collaborative environment.

• API Design & Development: Design, build, test, debug, and document production‑grade software (APIs) based on technical configurations, ensuring reliable and performant data delivery.
• Full‑Lifecycle Ownership: Partner with analysts, product managers, and other engineers to translate business needs into scalable systems, managing projects from design through deployment and ongoing support.
• Cloud Infrastructure: Leverage cloud service providers (AWS/GCP) to run and observe API workloads, ensuring high availability and operational efficiency.
• System Maintenance: Support, update, and maintain existing systems in response to business needs, defects, and evolving requirements.
• Architecture & Mentorship: Contribute to system architecture decisions and help shape team‑wide engineering practices through collaboration and code reviews.

• 5+ years of professional software engineering experience, with a track record of shipping and maintaining production systems.
• Strong proficiency in Java and Spring Boot, and/or Node.js with Type Script, with hands‑on experience building and operating production‑grade RESTful APIs.
• Solid understanding of both relational (SQL) and No
  
  SQL databases, including schema design, query tuning, and data modeling.
• Hands‑on experience with cloud platforms (AWS or GCP) and modern engineering practices (Git, CI/CD, automated testing, and incremental delivery).
• Strong written and verbal communication skills, with the ability to explain technical trade‑offs to both technical and non‑technical stakeholders.
• A collaborative mindset with a strong sense of ownership and a desire to take problems to completion.

Experience with event‑driven architectures (Kafka, Pub/Sub), containerization (Docker/Kubernetes), or infrastructure‑as‑code (Terraform).

W2 only (No C2C or 1099 contractors)