Back End Engineer (APP)

Our client is on a mission to redefine emotional wellness by developing a private journaling platform. We’re looking for a Senior Backend Engineer to join a small, focused team and help build the secure, scalable backbone of the product. This is a chance to work on meaningful challenges that sit at the intersection of health, AI, and human connection.

REMOTE

What You’ll Do‍

• Architect & build a serverless-first infrastructure: API Gateway, Lambda, SQS/SNS/EventBridge, S3, and Postgres/Aurora — all delivered with Infrastructure-as-Code and CI/CD pipelines.
• Create secure data boundaries: KMS key rotation, least-privilege IAM policies, immutable audit logs, and advanced secret management.
• Design resilient LLM pipelines: Support journaling summaries and long-form memory with idempotent workflows, retries, DLQs, OpenTelemetry, and latency/cost guardrails.
• Implement robust AuthN/Z: Apple/Google sign-in, HTTP-only JWTs, and mobile API best practices.
• Own reliability & observability: Define SLOs, monitor metrics/logs/traces, and participate in incident response to keep APIs performant and dependable.
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Hard Must-Haves‍

• 5+ years professional backend engineering experience (production systems).
• 2+ years Go in production.
• Proven success shipping event/queue-driven architectures on AWS (Lambda + SQS/SNS/EventBridge) at scale (50k+ DAU equivalent or more).
• PostgreSQL at scale: schema design, migrations, performance tuning, connection management.
• Strong security mindset: encryption in transit/at rest, IAM design, secrets/KMS experience, incident ownership.
• On-call experience with production observability (metrics, logs, traces, SLOs).
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Nice-to-Haves‍

• Experience in HIPAA or other regulated environments; threat modeling skills.
• AI/LLM pipeline integration and governance around token/cost.
• IaC (Terraform or CDK) and CI/CD (GitHub Actions).
• Mobile API performance optimization patterns.

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Please submit your resume for consideration!