Mid-Level Full Stack Engineer

Mid-Level Full Stack Python/Django Engineer 6+ Month W2 Contract (No C2C/No Visa Sponsorship or Student Sponsorship) Pay up to $80/hr. (No PTO and No Paid Holidays) 100% Remote We are seeking a skilled and motivated Mid-Level Full Stack Python/Django Engineer to join our dynamic team. This role focuses on developing and maintaining backend services and telephony-integrated solutions within a high-performance, operation-critical environment. The ideal candidate will have strong expertise in Python/Django, telephony technologies, voice systems, and experience with advanced AI voice models. This role offers a unique opportunity to influence the evolution of call center systems and voice-first applications.

Responsibilities/Deliverables

• Develop and maintain backend Python/Django services across core platforms: backend-core, privybox, number, and agent.
• Implement and optimize telephony integrations using Twilio, Bandwidth, and SS7 protocols.
• Manage VoIP push notifications through APNS PushKit and Firebase Cloud Messaging (FCM).
• Build and manage voicemail pipelines leveraging AWS S3 storage.
• Integrate and work with iOS hooks for native app interactions.
• Work with OpenAI’s real-time voice model for voice-to-model and model-to-voice transformations focusing on performance optimization.
• Troubleshoot complex issues spanning multiple systems by analyzing detailed logs and metrics.
• Own and reliably operate mission-critical workflows with minimal supervision.
• Collaborate on improving onboarding, troubleshooting, and operational flows.

Ideal Candidate

• Proficient in Python and Django framework with hands-on experience in backend service development.
• Experience integrating telephony platforms such as Twilio and Bandwidth, including working with SS7 adjacencies.
• Familiarity with APNS PushKit (VoIP push notifications) and Firebase Cloud Messaging (FCM).
• Experience with AWS S3 and building pipelines for voicemail storage and retrieval.
• Knowledge of iOS hooks and mobile platform integration.
• Strong experience or familiarity with OpenAI’s real-time voice model (voice-to-model and model-to-voice workflows); high performance and cost-efficiency considerations are a plus.
• Excellent analytical and troubleshooting skills; confident in navigating logs across distributed systems.
• Demonstrated ability to independently own and operate mission-critical workflows.
• Phone systems background is advantageous but not mandatory.

Tech Stack

• Twilio and Bandwidth for telephony, SS7 adjacencies
• Back end: Python/Django service
• VoIP push via APNS PushKit and FCM
• Voicemail S3 pipeline
• iOS hooks
• OpenAI real-time voice model (voice-to-model, model-to-voice); high performance but very expensive; familiarity with this specific model is a strong differentiator
• Experience in AI-native tech environments and/or leveraging AI for development/engineering approach.

Preferred Skills

• Direct experience with OpenAI’s real-time voice model or leading a call center transformation from a human-first to AI agent-first triage approach.
• Experience in iOS or Android development (at least one mobile platform). The estimated pay range for this position is USD $70.00/hr - USD $80.00/hr. Exact compensation and offers of employment are dependent on job-related knowledge, skills, experience, licenses or certifications, and location. We also offer comprehensive benefits. The Talent Acquisition Partner can share more details about compensation or benefits for the role during the interview process. ***Notice to Job Seekers Regarding Impersonation and Fraudulent Job Offers*** It has come to our attention that unauthorized individuals and entities are impersonating Milestone Technologies, Inc. on various job boards/portals,

specifically Naukri.com and Linkedin.com Please be advised of the following official Milestone Technologies recruitment policies:

Official Communication Channels All legitimate email communications from our recruitment team will originate ONLY from the domains:

@milestone.tech. We do not use generic email services (e.g. @gmail.com, @yahoo.com, @outlook.com) or unofficial third party messaging apps to conduct formal business.

No Recruitment Fees Milestone Technologies never requests any form of payment, "security deposit", "laptop/equipment fee", or "processing fee" at any stage of the recruitment or onboarding process. Any request for money in exchange for an interview or job offer is a scam.