What are the responsibilities and job description for the AI Engineer position at Sixtyfour?
What You’ll Do
- Design and ship agentic systems (tool calling, multi-agent workflows, structured outputs) that reliably fetch, extract, and normalize data across the web and APIs.
- Own robust web scraping: directory crawling, CAPTCHA handling, headless browsers, rotating proxies, anti-bot evasion, and backoff/retry policies.
- Develop backend services in Python FastAPI with clean contracts and strong observability.
- Scale workloads on AWS Docker (batch/queue workers, autoscaling, fault tolerance, cost control).
- Parallelize external API requests safely (rate limits, idempotency, circuit breakers, retries, dedupe).
- Integrate third-party APIs for enrichment and search; model and cache responses; manage schema evolution.
- Transform and analyze data using Pandas (or similar) for normalization, QA, and reporting.
- Pitch in across the stack: billing (Stripe), and occasional front-end changes to ship end-to-end features.
- Hands-on experience with agentic architectures (tool calling, structured outputs/JSON, planning/execution loops) and prompt engineering.
- Proven web scraping expertise: solving CAPTCHAs, session/auth flows, proxy rotation, stealth techniques, and legal/ethical constraints.
- AWS Docker in production (at least two of: ECS/EKS, Lambda, SQS/SNS, Batch, Step Functions, CloudWatch).
- Building high-throughput data/IO pipelines with concurrency (asyncio/multiprocessing), resilient retries, and rate-limit aware scheduling.
- Integrating diverse external APIs (auth patterns, pagination, webhooks); designing stable interfaces and backfills.
- Strong data wrangling with Pandas or equivalent; comfort with large CSV/Parquet workflows and memory/perf tuning.
- Excellent ownership, product sense, and pragmatic debugging.
- Entity resolution/record linkage at scale (probabilistic matching, blocking, deduping).
- Experience with Langfuse, OpenTelemetry, or similar for tracing/evals; task queues (Celery/RQ), Redis, Postgres.
- Search relevance (BM25/vector/hybrid), embeddings, and retrieval pipelines.
- Playwright/Selenium, stealth browsers, anti-bot frameworks, CAPTCHA providers.
- CI/CD, infrastructure as code (Terraform), and cost/perf observability.
- Security & compliance basics for data handling and PII.
Salary : $120,000 - $200,000
