1

Online Fastapi Developer Jobs in Acton, MA (NOW HIRING)

Senior Software Engineer

Framingham, MA · Hybrid

$126K - $166K/yr

Created from the ground up for the new age of collaborative online working, the Arcadia suite runs ... Experience in Python, experience in web frameworks (FastAPI, Nuxt), and experience in distributed ...

Senior Software Engineer

Framingham, MA · On-site

$126K - $166K/yr

Created from the ground up for the new age of collaborative online working, the Arcadia suite runs ... Experience in Python, experience in web frameworks (FastAPI, Nuxt), and experience in distributed ...

... offline and online tests, and incident response for AIbacked systems; hold the bar for design ... Proficient in Python and modern backend frameworks (FastAPI, Django or similar), with experience ...

... online tests, and incident response for AI‑backed systems; hold the bar for design reviews and ... Proficient in Python and modern backend frameworks (FastAPI, Django or similar), with experience ...

... offline and online tests, and incident response for AI-backed systems; hold the bar for design ... Proficient in Python and modern backend frameworks (FastAPI, Django or similar), with experience ...

... engineering processes. * Strong experience with Python, particularly in building REST APIs using frameworks like FastAPI. * Grounding in NLP and machine learning as they relate to building LLM ...

Online Fastapi Developer information

See Acton, MA salary details

$20

$49

$111

How much do online fastapi developer jobs pay per hour?

As of Aug 4, 2026, the average hourly pay for online fastapi developer in Acton, MA is $49.86, according to ZipRecruiter salary data. Most workers in this role earn between $25.91 and $60.34 per hour, depending on experience, location, and employer.
Infographic showing various Online Fastapi Developer job openings in Acton, MA as of June 2026, with employment types broken down into 1% Locum Tenens, 92% Full Time, 4% Part Time, and 3% Contract. Highlights an 81% Physical, 5% Hybrid, and 14% Remote job distribution, with an average salary of $103,713 per year, or $49.9 per hour.

Founding Machine Learning Engineer

Onescreen

Boston, MA • On-site

Full-time

Re-posted 20 days ago


Job description

Job Summary:
Onescreen is a modern platform for out-of-home advertising, focused on streamlining the planning, buying, and measuring of OOH campaigns. They are seeking a Founding Machine Learning Engineer to own the development of matching algorithms and the data platform that supports them, along with designing and shipping models that optimize OOH inventory rankings.
Responsibilities:
• Design and ship matching and ranking models for OOH inventory: candidate generation, re-ranking, geospatial-aware scoring.
• Own the data warehouse layer end to end: staging, marts, feature pipelines, freshness, lineage.
• Stand up offline and online evaluation infrastructure — measure the gap between them, don't assume it.
• Publish ranking and matching APIs for product surfaces, with latency and quality SLOs.
• Instrument model monitoring: drift detection, prediction distribution, feature freshness, retraining triggers.
Qualifications:
Required:
• you have owned a production ranking, matching, or recommendation system end-to-end
• Strong production Python (NumPy, Pandas, FastAPI, SQLAlchemy)
• Strong SQL and modern data warehouse experience (BigQuery preferred)
• Real ranking and matching modeling fluency — learning-to-rank, retrieval and re-rank patterns, not just classification
• Evaluation methodology rigor: holdouts, leakage prevention, online vs. offline gap measurement
• Comfort owning the data pipeline as well as the model
• Bias toward shipping. Clear writer. Self-directed.
Preferred:
• Geospatial data experience (H3, PostGIS, GeoPandas)
• Mobility or location data experience
• Embedding-based retrieval (pgvector, FAISS, vector databases)
• Bandits, contextual bandits, or online learning
• A/B testing infrastructure design
• Causal inference
• dbt
• Ad-tech or OOH domain familiarity
Company:
Onescreen is the modern partner for out-of-home advertising. Founded in 2020, the company is headquartered in Boston, USA, with a team of 51-200 employees. The company is currently Growth Stage.