Haystack
← Back to Jobs
Technology
PG

Specialty Software Engineer 4 - Contingent

PTR GlobalSan Francisco, CA🇺🇸United StatesPosted 9 Sept 2026

Quick Overview

Salary
$80 - $85/hr
Seniority
Mid Senior
Work mode
Hybrid
Location
San Francisco, CA, United States
Posted
16 hours ago
FastAPIMicroservicesMongoDBSQLGenerative AILLMPythonREST

Job Description

Position: AI/Python Engineer
Location: San Francisco, California
Job ID: 179540

Job Overview:
This role involves consulting on complex initiatives with broad impact and large-scale planning for Specialty Software Engineering. The position requires reviewing and analyzing multi-faceted, larger-scale, or longer-term challenges that demand in-depth evaluation of multiple factors, including intangibles or unprecedented elements. The role also includes contributing to the resolution of complex situations, ensuring compliance with policies and procedures, and collaborating strategically with client personnel.

Responsibilities:
  • Consult on complex initiatives with broad impact and large-scale planning for Specialty Software Engineering.
  • Review and analyze complex, multi-faceted challenges requiring in-depth evaluation of multiple factors.
  • Contribute to resolving complex situations while ensuring compliance with policies and procedures.
  • Collaborate strategically with client personnel to meet deliverables.
  • Develop, enhance, and support AI agents with a strong focus on coding and technical ownership.
  • Participate in daily team standups and collaborate closely with developers and architects.

Qualifications:
  • 5+ years of experience in Specialty Software Engineering or equivalent through work, consulting, training, military experience, or education.
  • Strong backend Python development experience (5+ years).
  • Experience building and supporting microservices-based applications (5+ years).
  • Proficiency in designing and consuming APIs (5+ years).
  • Experience with MongoDB and vector databases (5+ years).
  • Familiarity with Large Language Models (LLMs), Agentic AI frameworks, and AI orchestration concepts (2+ years preferred).

Core Technical Skills:
  • Python software engineering
  • REST API development
  • Microservices architecture
  • Distributed systems design
  • Backend service development
  • FastAPI, AsyncIO, Multiprocessing
  • Performance tuning and profiling
  • Caching strategies
  • Database/query optimization
  • Event-driven architecture
  • High-availability and fault-tolerant system design

Generative AI / LLM Skills:
  • Generative AI application development
  • Large Language Models
  • Agentic AI systems
  • Multi-agent workflow design
  • Retrieval-Augmented Generation (RAG)
  • Knowledge graph-enhanced RAG
  • Prompt engineering and orchestration
  • Tool calling and LLM routing
  • Fine-tuning evaluation and model evaluation frameworks
  • Hallucination detection and human-in-the-loop validation
  • Text-to-SQL using LLMs
  • Schema-aware prompting
  • Embeddings and semantic search

AI Platform & Architecture Skills:
  • Enterprise AI platform architecture
  • Scalable AI workflow design
  • AI governance standards
  • AI guardrails implementation
  • Responsible AI controls
  • PII redaction
  • Audit logging
  • Model usage monitoring
  • Latency, cost, and accuracy optimization
  • AI/ML feature engineering
  • Recommendation systems
  • Feedback loops for model improvement

About PTR Global: PTR Global is a leading provider of information technology and workforce solutions. PTR Global has become one of the largest providers in its industry, with over 5000 professionals providing services across the U.S. and Canada. For more information visit ;br>
At PTR Global, we understand the importance of your privacy and security. We NEVER ASK job applicants to:
  • Pay any fee to be considered for, submitted to, or selected for any opportunity.
  • Purchase any product, service, or gift cards from us or for us as part of an application, interview, or selection process.
  • Provide sensitive financial information such as credit card numbers or banking information. Successfully placed or hired candidates would only be asked for banking details after accepting an offer from us during our official onboarding processes as part of payroll setup.

Pay Range: $80 - $85

The specific compensation for this position will be determined by several factors, including the scope, complexity, and location of the role, as well as the cost of labor in the market; the skills, education, training, credentials, and experience of the candidate; and other conditions of employment. Our full-time consultants have access to benefits, including medical, dental, vision, and 401K contributions, as well as PTO, sick leave, and other benefits mandated by applicable state or localities where you reside or work.

If you receive a suspicious message, email, or phone call claiming to be from PTR Global do not respond or click on any links. Instead, contact us directly at +1 . To report any concerns, please email us at

During the hiring process, we may use artificial intelligence (AI) tools to assist in evaluating information related to your application. These tools may help analyze job-related qualifications or assist recruiters in reviewing applications and interview responses. AI-generated information is one factor considered in our hiring process. Final employment decisions are made by qualified hiring personnel and are not based solely on AI-generated recommendations.

#LI-AR1

Similar jobs