Senior Fullstack Java Developer working with Spring & Angular at ONTEC. Engage in modern software projects with international customers, ensuring innovative solutions alongside a passionate team.
About the role
- Backend Engineer optimizing voice AI agents for reliability at scale using TypeScript/Node.js and Python. Involved in orchestrating systems for real-time applications in a fast-paced environment.
Responsibilities
- Own core services in TypeScript/Node.js and Python that orchestrate LiveKit, Temporal, STT/TTS, and LLM tooling for real-time voice agents.
- Scale 1 → N → 100×: take what works today and harden it for 10K parallel calls with 99.99% uptime. Turn human playbooks into productized systems.
- Harden pipelines for ingestion, evaluation, and analytics so telephony events, recordings, and outcomes propagate reliably across services.
- Level-up observability: deepen OpenTelemetry/SigNoz and trace-first practices to shrink mean-time-to-truth in prod.
- Prototype → test → prod: partner with product to ship new LLM-driven behaviors with clear success metrics, guardrails, and regressions blocked in CI.
- Infrastructure readiness: CI/CD, environment automation, incident response playbooks—customer conversations stay online.
Requirements
- Have senior/staff experience running distributed backends with real-time/streaming constraints.
- Are fluent in TypeScript/Node.js and comfortable jumping into Python for ML/audio jobs.
- Know Temporal (or similar workflow engines), queues, Redis, and PostgreSQL.
- Have shipped production LLM apps and understand prompt/tool design, evals, and guardrail instrumentation.
- Operate cloud-native on AWS with Terraform; k8s doesn’t scare you.
- Are a power user of Cursor/Zed/Devin and were using code-gen before it was cool.
- Have intuition for what current-gen LLMs can/can’t do—and what tomorrow’s models will unlock.
- Think independently, grind with customers, and do whatever it takes—without dropping the quality bar.
- Bonus: built 0→1 real-time systems in Telecom/Networking, Autonomous Vehicles, or HFT; founded something; built AI voice apps.
Benefits
- Health insurance
- 401(k) matching
- Flexible work hours
- Paid time off
- Remote work options
Job title
Job type
Experience level
Salary
Not specified
Degree requirement
Tech skills
Location requirements
Building innovative financial technologies as a Senior .NET Developer at Roofstacks. Join the growing Card Payment Systems team in developing mission - critical services for card applications.
Application Developer building web platforms for merchants to compare payment solutions. Involved in both merchant and provider applications for greater ecosystem transparency.
Senior .NET Integration Developer at Belgian public - sector organization, designing integration platforms and building .NET components while collaborating in a SAFe environment.
Engineer for testing systems developing automated testing software and processes. Based in Berlin for a client in advanced communication systems.
Experienced PHP Developer contributing to backend systems and collaborating in a hybrid environment. Engage in technical decisions, RESTful API design, and maintainability measures.
Software Developer enhancing softgate's document management systems in a collaborative team environment. Involves working closely with product management and mentoring junior developers.
Senior Software Developer at Contour Software involved in development, testing, and deployment within STC health. Collaborating with teams to deliver solutions in vaccine intelligence and immunization data management.
Application Engineer in Payments Workflow Technology team delivering solutions aligned with technology strategy. Engaging in project delivery and collaboration for technology solutions at TD.
Java Developer at SourcingTrust, Lda responsible for software development and collaboration with cross - functional teams in Lisbon, Portugal. Delivering high - quality applications with a focus on software best practices and team delivery.