Hire Voice AI Engineers | Retell, Synthflow & Kickcall Agents is built for teams that need measurable outcomes, clear communication, and delivery that survives real production use. You own the platform account. We join your Slack, design conversation flows, write voice-optimised prompts, wire CRM and calendar integrations, test edge cases, and iterate from real call transcripts. Udayra embeds senior voice AI prompt engineers on Retell AI, Synthflow, Kickcall, Vapi, Bland AI, and Eleven Labs — so your agent goes live in days, not months, without the DIY learning curve.
A typical engagement includes Embedded Voice AI Prompt Engineers, Agent Flow Design, and Knowledge Base Setup with a delivery model focused on Discovery (Week 1) and Kickoff & Workspace Access. You also get Kickoff in days — not months of hiring, Voice-specific prompt engineering expertise, and Multi-platform: Retell, Synthflow, Kickcall, Vapi, Bland, so your team can scale with confidence after launch.
Related: Custom Voice AI Development — full builds on ElevenLabs, Vapi & OpenAI Realtime →
Senior engineers join your team — your Slack, your sprint cadence, your platform workspace. We write voice-specific system prompts, handle interruptions, brevity, escalation logic, and tone — not generic chatbot copy.
Single-prompt agents, multi-step conversational flows, and pathway-based logic — designed for your use case whether inbound reception, outbound qualification, or appointment booking.
We ingest FAQs, PDFs, website content, and product docs into your platform knowledge base so agents answer accurately without hallucinating off-script.
Real-time integrations with Hub Spot, Salesforce, Cal.com, Go High Level, n8 n, Zapier, and custom APIs — book appointments, update CRM records, process payments, and transfer calls with context.
We stress-test agents against objections, accents, off-topic callers, silence, and escalation triggers — using test calls and production transcript review before full rollout.
Voice agents degrade without maintenance. We offer monthly tuning from call analytics — prompt updates, new intents, and performance improvements as your business evolves.
API-first conversation flows, low-latency voice, function calling, and SIP/telephony setup. Ideal for teams that want developer control with a production-ready voice runtime.
No-code visual builder, enterprise telephony, and native CRM integrations. We work across the BELL framework — build, evaluate, launch, and learn — for scalable deployments.
Agency-friendly templates, knowledge base ingestion, Vo IP deployment, and action-based agents. Suited for businesses and agencies onboarding multiple clients quickly.
Developer-flexible voice pipelines for fast prototypes and custom tool-calling logic. We configure STT, LLM, TTS stacks and human handoff paths.
High-volume outbound campaigns, lead qualification scripts, and concurrent call handling for sales and follow-up workflows.
Premium voice selection and cloning layered on any platform when voice quality and naturalness are the top priority.
We map your use case, compliance requirements (HIPAA, TCPA, GDPR), platform choice, success metrics, and integration needs before writing a single prompt.
You grant access to your Retell, Synthflow, Kickcall, or other platform workspace. We set up a shared Slack or Teams channel and align on sprint rituals.
Each sprint ends with test call recordings, flow walkthroughs, and measurable progress — not status slides. You hear the agent improve week over week.
Limited live traffic with full transcript analysis. We tune prompts, fix failure modes, and harden escalation paths before scaling call volume.
Playbooks, prompt libraries, and integration runbooks so your team can maintain the agent. Optional ongoing retainer for continuous optimization.
Yes. We embed in your platform workspace — you retain account ownership, billing, and data. We join your Slack or Teams channel and build agents as an extension of your team, not a black-box vendor.
We deliver end-to-end: conversation flow design, voice-optimised prompts, knowledge base setup, CRM and calendar integrations, telephony configuration, testing, and post-launch tuning from call transcripts.
It depends on your use case. Retell suits API-first teams and complex flows. Synthflow fits no-code builders who want enterprise telephony and CRM in one place. Kickcall works well for agencies and businesses using templates with knowledge bases. We are platform-agnostic and help you choose during discovery.
Most engagements produce a pilot-ready agent within 1–3 weeks after kickoff, depending on integration complexity and compliance requirements. Simple inbound receptionists often go live faster than multi-system outbound campaigns.
Yes. We wire function calls and webhooks to Hub Spot, Salesforce, Cal.com, Go High Level, n8 n, Zapier, and custom APIs — so agents book appointments, update CRM records, and trigger downstream workflows in real time.
We offer embedded engineers on monthly dedicated capacity or fixed-scope project delivery. Typical rates are 40–60% lower than US voice AI agencies for equivalent senior talent. Contact us for a quote based on platform, integrations, and team size.