Call Box · 1 month ago
Senior Software Engineer - Conversational AI Platform
All over,TX,US
Full-time
Onsite
Senior Level
5+ years expCall Box exists to grow people and is seeking a Senior Software Engineer for their Conversational AI Platform. The role involves designing, implementing, and maintaining a high-performance voice AI system for the automotive industry, with a focus on real-time processing and system reliability.
Artificial Intelligence (AI)Communications InfrastructureProfessional NetworkingProfessional ServicesTelecommunications
Responsibilities
Own your design, implementation, deployments, and live-site health
Write code that integrates across the full conversational AI stack: speech-to-text, text-to-speech, Large Language Models (LLMs), and telephony systems
We optimize the audio pipeline to ensure delivery of high-quality results
Deliver real-time conversational voice AI, including low-latency infrastructure
You will deliver Infrastructure as Code (IaC) using AWS CDK for both containerized and serverless architectures
Deliver fault-tolerant and highly available telephony integrations featuring graceful degradation and comprehensive error handling
We are an AI-first engineering team. You are an expert in prompt design, context management, and optimization across LLM providers
Our team moves quickly and confidently by investing in code quality, automated tests, and contributing high-value code review feedback
We obsess over customers with operational excellence, delivering solutions with observability infrastructure
We measure what we ship with SLIs, SLOs, high signal-to-noise structured logs, monitoring, and alarming
We own our outcomes
Actively contribute to the team’s systems design
Drive critical technical decisions that affect broad areas of the platform
Establish and enforce engineering standards, best practices, and architecture patterns
Lead initiatives for the team that improve engineering productivity, quality, and scalability
Design and implement scalable systems spanning both modern and legacy systems
Proactively identify and solve technical problems
Build maintainable, scalable, and business-aligned systems
Translate complex business needs into robust technical strategies
Apply a 'first—team' mentality, meaning we win and lose as a team
Earn trust from others and keep it
Champion knowledge sharing via documentation, talks, and pairing sessions
Provide insightful code reviews that raise team quality
Invest in the success of other team members
Help engineers of all levels build leadership and technical skills
We value direct communication. No empty corporate-speak
Qualification
Required
CS degree (or demonstrated equivalent depth in algorithms, systems design, distributed computing)
5+ years building and scaling production systems
Expert-level TypeScript and Node.js experience
Strong AWS experience (ECS, Lambda, RDS/ElastiCache, SQS, CloudWatch, networking, IAM)
Infrastructure as code with CDK
Production database experience (Postgres)
Obsessive about testing, observability, and reliability
Preferred
Thrive on feedback, coaching, and continuous professional development
Are self-motivated, adaptable, and take a curious, strategic approach to problem-solving
Have excellent communication skills and a customer-first mindset
Have experience with LLM application development (prompt engineering, context management, latency optimization)
Have experience with Real-time systems (WebSockets, event-driven architectures)
Have experience with high-throughput distributed systems and performance optimization under strict latency constraints
Have experience with telephony/VoIP systems (SIP, RTP, audio codecs)
Have experience with third-party integrations for dealership management systems (DMS), scheduling platforms, and CRMs
Benefits
Competitive salary package (immediate PTO).
Full benefits package.
Fidelity 401k with company match.
Fun perks including a monthly gym reimbursement, a monthly wellness reimbursement, and a monthly reading allowance.
Opportunities for continued career growth within the organization.
Fun and collaborative work environment.
Company
Call Box
Call Box offers a comprehensive solution that cultivates accountability and reduces inefficiencies in phone handling processes.
51-200 employees
H1B Sponsorship
Call Box has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
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Trends of Total Sponsorships
2025 (1)
2024 (1)
2023 (2)
2022 (1)
2021 (2)
2020 (2)
Funding
Current Stage
Growth StageLeadership Team
Stephane Ferri
Chief Executive Officer
Recent News
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