Backend Engineer jobs in United States
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Mem0 · 1 day ago

Backend Engineer

positionSan Francisco Bay Area
timeFull-time
remoteOnsite
seniorityMid Level
money$150K/yr - $180K/yr
date3+ years exp

Mem0 is building the memory layer for AI agents, enabling AI to remember conversations and learn from interactions. The Backend Engineer will own the backend of the memory platform, designing REST APIs, modeling data, and collaborating with frontend and research teams to deliver reliable features.

Artificial Intelligence (AI)Information TechnologyMachine LearningSaaS

Responsibilities

Design & ship REST APIs: Define contracts, versioning, auth, rate limits; write migrations and docs
Model data & schemas: Relational (Postgres) and graph (e.g., Neo4j); enforce integrity and performance
Debug customer issues end-to-end: Trace with logs/metrics/traces, reproduce, fix, and write preventative guardrails
Optimize performance: Tune slow SQL with EXPLAIN/ANALYZE, indexes, partitioning, pagination, and caching (e.g., Redis)
Build services in Python: Async where it helps (FastAPI/Starlette, Django/DRF, Flask), background jobs, queues, schedulers
Operate in the cloud: Containerize with Docker, deploy on Kubernetes (EKS), and use AWS primitives (EC2, RDS/Aurora, S3, IAM)
Instrument everything: Custom metrics, structured logging, tracing; set SLOs and alerts (CloudWatch/Prometheus/OpenTelemetry)
Collaborate & ship: Work with frontend and research to scope APIs and deliver features to production

Qualification

Backend systemsREST APIsPythonAWSData modelingSQLDockerKubernetesGraph databasesAsync programmingClear communicatorEffective collaborator

Required

3+ years building backend systems and shipping REST APIs to production
Strong Python fundamentals; experience with async programming and a major web framework (FastAPI/Django/Flask)
Solid data modeling and SQL skills; hands-on with query tuning and performance debugging in Postgres/MySQL
Experience with graph databases (e.g., Neo4j or Amazon Neptune) and appropriate data modeling trade-offs
Comfortable running services on AWS with Docker and Kubernetes
Demonstrated root-cause analysis and ownership from incident to prevention
Clear communicator and effective collaborator with frontend, research, and customers

Preferred

GraphQL/gRPC; event-driven systems (SNS/SQS/Kafka) and background workers (Celery/RQ)
Caching, rate limiting, multi-tenancy, and feature-flag strategies
Security & privacy best practices (PII handling, secrets management)
Deep observability experience (OpenTelemetry, SLO-based alerting)
Prior work with search/retrieval or memory systems
On-call experience and running blameless postmortems

Company

Mem0

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Mem0 is a SaaS company that specializes memory layers for LLM applications.
dateFounded in 2023
location
San Francisco, California, USA
people-size2-10 employees
web-link
https://mem0.ai

Funding

Current Stage
Early Stage
Total Funding
$24.4M
Key Investors
Basis Set VenturesKindred VenturesY Combinator
2025-10-28Series A· $20M
2025-10-28Seed· $3.9M
2024-09-25Pre Seed· $0.5M

Recent News

Built In
Mem0 Raises $24M to Overcome AI Memory Challenges
2025-11-04
alleywatch.com
The Weekly Notable Startup Funding Report: 11/3/25
2025-11-03
Tech Startups - Startups and Technology news
Top Startup and Tech Funding News Roundup – Week Ending October 31, 2025
2025-11-01
Company data provided by crunchbase