CrawlJobs Logo

Software Engineer - Agent Infra

Perplexity

Location Icon

Location:
United States , San Francisco ▼

Category Icon
Category:
IT - Software Development

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

210000.00 - 385000.00 USD / Year
Save Job
Save Icon
Apply Position

Job Description:

Perplexity is looking for a Software Engineer to build the core infrastructure that powers agentic products across Perplexity including Search, Deep Research, and the Comet browser. You will design and evolve the runtime, orchestration, evaluation and training systems that let agents plan, use tools, browse, and verify at scale.

Job Responsibility:

  • Design and implement a highly reliable and scalable agent runtime: orchestration, shared state and memory, tool calling interfaces, and scheduling for cost, latency, and quality
  • Build secure sandboxed execution for agent actions and code
  • Optimize cold start, isolation, and observability
  • Ship unified interfaces for multiple model sizes and providers
  • Integrate with open tool ecosystems such as MCP style connectors for data and actions
  • Develop an evaluation platform for online and offline assessments, A/B tests, safety checks, and regression gates that improve agent reliability over time
  • Partner with Research, Inference, and Search to land new agent capabilities end to end, from prototype to production

Requirements:

  • 6+ years of industry experience building large scale systems or platforms
  • Experience building agent applications with tool calling, context engineering, or open connector integrations
  • Strong coding skills in one or more of: Python, Java, Go
  • Comfortable with service design, APIs, and data models for high throughput systems
  • Working knowledge of containers, virtualization, and sandboxing
  • Familiar with metrics, tracing, on call, and incident practices
  • Bias to own problems across layers, collaborate in fast moving teams, and ship

Nice to have:

  • Prior work on agent orchestration pipelines: task routing, planning, memory graphs, vector search, or browser automation
  • Experience with evaluations, preference optimization, or RL to improve agent reliability
  • Exposure to MCP or similar open protocols for tool and data connectivity
  • Security hardening for multi tenant workloads, snapshotting, or untrusted code execution
What we offer:
  • Equity
  • Health
  • Dental
  • Vision
  • Retirement
  • Fitness
  • Commuter and dependent care accounts

Additional Information:

Job Posted:
February 21, 2026

Employment Type:
Fulltime
Icon
Perplexity - All Job Offers
Job Link Share:
Copy Link Icon
Facebook Icon Twitter Icon LinkedIn Icon

Looking for more opportunities? Search for other job offers that match your skills and interests.

Briefcase Icon

Similar Jobs for Software Engineer - Agent Infra

New

Software Engineer, Agents

At Harvey, we’re transforming how legal and professional services operate — not ...
Location
Location
United States , San Francisco
Salary
Salary:
165000.00 - 312000.00 USD / Year
harvey.ai Logo
Harvey
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Passion for building effective domain-specific agents
  • Iterative mindset: you develop proof of concepts, make decisions quickly, and ship v0s
  • Comfortable with when and how to use evaluations to drive quality
  • Humble and adaptable about code and frameworks. We expect you to drive adoption of new best practices as they develop
  • 3+ years (post-BS/MS) of software engineering experience
  • Proficiency in Python and experience working with LLM APIs and agent frameworks
  • Experience with shipping user-facing products, either on the backend or full-stack
Job Responsibility
Job Responsibility
  • Partner with customers and PMs to understand legal workflows, design practical evaluations that capture what “excellent” means, and ship agents that get the job done
  • Optimize agent performance through prompt engineering, model selection, tool design, skill writing, context window management, and eval harness development
  • Work with our model infra team to design and implement infrastructure for low-latency agent execution, including caching strategies, parallel tool calls, or subagent patterns
  • Improve our observability and instrumentation to profile agent behavior, identify bottlenecks, and drive optimization decisions
  • Stay current on new developments in agentic systems and bring those learnings back to the products we build
What we offer
What we offer
  • Comprehensive health, dental and vision coverage
  • retirement benefits (401k match up to 4%)
  • flexible PTO
  • equity plan
  • bonus
  • Fulltime
Read More
Arrow Right
New

Senior Research Engineer

As a Research Engineer at Microsoft, you will set the technical vision and lead ...
Location
Location
United States , Redmond
Salary
Salary:
119800.00 - 234700.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience
  • Proven track record leading large-scale AI systems and cross-org initiatives that shipped
  • Solid software engineering foundations and hands-on depth in Python plus deep-learning frameworks (PyTorch/ TensorFlow) and modern MLOps/tooling
  • Experience shipping and maintaining production AI systems
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role
  • This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter
Job Responsibility
Job Responsibility
  • Architect and deliver complex AI systems across model development, data, infra, evaluation, and deployment spanning multiple product lines
  • Set technical direction for large programs
  • drive alignment across Research, Engineering, and Product
  • Build and harden prototypes into production-ready services using robust software engineering and MLOps practices
  • Integrate LLMs, multimodal models, multi-agent architectures, and RAG into Microsoft’s ecosystem
  • Establish best practices for MLOps, governance, and Responsible AI, compliant with Microsoft principles and industry standards
  • Drive original research and thought leadership (whitepapers, internal notes, patents)
  • convert insights into shipped capabilities
  • Research Translation: Continuously review emerging work
  • identify high-potential methods and adapt them to Microsoft problem spaces
  • Fulltime
Read More
Arrow Right

Engineering Manager, Mobile Quality Engineering

The Quality Engineering team helps Airbnb build high quality software efficientl...
Location
Location
Brazil , São Paulo
Salary
Salary:
Not provided
airbnb.com Logo
Airbnb
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 3+ years of engineering management
  • 7+ years of industry experience with a strong focus on iOS and/or Android developer tooling, testing, or quality engineering
  • Strong familiarity with software engineering principles, including object-oriented and functional programming paradigms, design patterns, and code quality practices
  • Hands-on technical leadership leading multiple teams and setting technical direction
  • Led projects with notable risk and complexity
  • develops the strategy for project execution
  • Proven experience leading distributed or regional engineering teams and driving technical outcomes
  • Skilled in mentoring engineers and creating strong team dynamics across cultural and geographic boundaries
  • Be an agent of change inside the organization and be comfortable leading through ambiguity
  • Excellent communication and collaboration skills, with the ability to align local execution to a global strategy
Job Responsibility
Job Responsibility
  • Define and promote a quality mindset and strategy across the organization, by creating a vision that drives QE policies, programs and initiatives
  • Hire and retain a team of high-performing engineers
  • empower the team to achieve a high level of productivity, reliability and simplicity
  • Drive a sense of trust and belonging, and build inclusive teams with world class talent
  • Build and maintain our testing environments, testing data, and testing frameworks, working through ambiguity, concept validation and implementation of a best-in-class solution
  • Collaborate with cross-functional stakeholders to analyze internal/external failures, and suggest corrective and preventive action
  • Use a data-based approach to help resolve internal quality issues to prevent defects in code shipment
  • Partner with global Infra leadership to execute the Brazil site’s technical roadmap
  • Drive excellence in technical design, reliability, scalability, and efficiency across projects
  • Collaborate cross-functionally with global teams to ensure alignment on architecture, tooling, and standards
Read More
Arrow Right
New

Senior Software Engineer

Microsoft’s Azure Data engineering team is leading the transformation of analyti...
Location
Location
India , Bangalore
Salary
Salary:
Not provided
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s degree in Computer Science or related field AND 8+ years of Fullstack experience with AI, building software tools, internal platforms, automation systems, or developer productivity solutions
  • Hands on experience with AI / Agentic AI / LLM / MCP servers
  • Strong coding expertise in C#, TypeScript, Java, Python, or JavaScript
Job Responsibility
Job Responsibility
  • Architect, design, and implement internal tools and platforms that modernize engineering workflows for Power BI Desktop and Service
  • Build scalable, secure, and reliable systems that support productivity, automation, and compliance across engineering teams
  • Lead tool-driven automation that improves validation, release readiness, diagnostic workflows, and engineering observability
  • Integrate GenAI, telemetry, and ML-based intelligence into tools to enhance coverage, detection, and engineering insights
  • Modernize legacy systems by migrating them to cloud-native, maintainable architectures
  • Partner with PM, QA, Release Engineering, and Partner Teams (Desktop, Service, Infra, ADO/GitHub) to align tooling needs and engineering OKRs
  • Mentor engineers and foster a culture of craftsmanship, learning, and technical excellence
  • Influence engineering strategy through data-driven insights, metrics, and tooling analytics
  • Drive continuous improvement through measurable success indicators and iterative tool enhancements
  • Fulltime
Read More
Arrow Right
New

Full Stack Software Engineer - Applied AI

Perplexity is seeking full stack applied AI engineers to revolutionize the way p...
Location
Location
United States , San Francisco; Palo Alto; New York City
Salary
Salary:
210000.00 - 385000.00 USD / Year
Perplexity
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Hands-on experience building production AI or agentic applications end to end, including tool calling, context engineering, and integration with modern LLM APIs
  • Strong backend and systems design skills, with a track record of making practical tradeoffs between cost, latency, reliability, and quality in real-world systems
  • Proficiency with modern web or product stacks (e.g., Python plus a frontend framework) and comfort working across the stack from data and infra to UI
  • Self-directed and high agency, with 4+ years of industry experience in software or AI engineering and a bias toward shipping impactful product work
Job Responsibility
Job Responsibility
  • Design and deliver scalable, end-to-end AI features that power core user experiences such as discovery, deep research, and monetization across Perplexity’s products
  • Build and evolve full stack systems that integrate multiple third-party and in-house Sonar models, ensuring seamless orchestration, robustness, and observability in production
  • Develop and maintain evaluation and experimentation platforms to measure answer quality, model performance, and product impact, supporting both online and offline workflows
  • Collaborate closely with research, product, design, and infra teams to translate frontier model capabilities into shipped user-facing features and internal tools
  • Continuously improve performance, reliability, and cost efficiency of AI-powered applications through thoughtful system design, instrumentation, and iteration
What we offer
What we offer
  • Equity
  • Health
  • Dental
  • Vision
  • Retirement
  • Fitness
  • Commuter and dependent care accounts
  • Fulltime
Read More
Arrow Right

Senior Vue/Nuxt Frontend Engineer

Flanks is shaking up the wealth management industry by making it simpler and way...
Location
Location
Spain , Barcelona
Salary
Salary:
Not provided
flanks.io Logo
Flanks
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Expert-level frontend skills with Vue + Nuxt, including scalable component architecture, state management, routing, and performance tuning
  • Real-time UI experience using WebSockets/SSE or other event-driven streaming patterns
  • Strong experience building complex dashboards and data visualizations (D3.js, Cytoscape, Vue Flow, or similar)
  • Comfortable using Docker / Docker Compose for local multi-service development
  • Familiarity with backend concepts, API design, and event schemas
  • 7+ years in software engineering (senior-level)
  • Fluent in Spanish and English
Job Responsibility
Job Responsibility
  • Own the architecture of the AI/multi-agent frontend (Vue + Nuxt), from early design to production readiness
  • Maintain and evolve tooling, CI/CD, testing strategy, and internal component libraries relevant to the AI product area
  • Build event-driven UIs using WebSockets/SSE to show streaming agent responses, live logs, system state transitions, execution traces
  • Build rich, interactive components for conversation UIs, agent graphs/flows, timelines, status panels, and debugging views
  • Craft dense financial data dashboards that support auditing, validation, and decision-making
  • Work closely with backend, ML, and infra teams to define events, APIs, and schemas
  • Mentor engineers on frontend best practices, especially around real-time apps and visualization
  • Contribute to architectural discussions, standards, and documentation
What we offer
What we offer
  • A cool office between Sants Estació and Plaça Espanya with stunning views of Barcelona
  • Flexible working hours and hybrid work options
  • Paid day off on your birthday
  • Weekly fresh fruit, coffee, and tea on tap
  • Friday happy hours after our all-hands meetings
  • Team-building events to bond and have fun
  • Health insurance and flexible compensation with Alan
  • A digital canteen, thanks to Nora Real Food, subsidised at 50%
  • A yearly training budget to keep growing
  • Fulltime
Read More
Arrow Right

Sr. Staff Engineer (Conversational/Voice AI)

Uber’s Customer Obsession team builds the platform and AI that powers world‑clas...
Location
Location
United States , Sunnyvale, California; San Francisco, California
Salary
Salary:
267000.00 - 297000.00 USD / Year
uber.com Logo
Uber
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 10+ years building production ML/AI systems
  • 4+ years leading complex ML initiatives end‑to‑end
  • Deep expertise in LLM‑driven systems (inference optimization, prompt/program design, fine‑tuning, distillation/LoRA, safety/guardrails, evals)
  • Strong software engineering in Python plus one of Go/Java/C++
  • hands‑on with microservices, gRPC/HTTP, cloud infra, containers, CI/CD, and real‑time telemetry/observability
  • Demonstrated ownership of high‑availability services (SLO/SLA design, incident response, on‑call leadership, postmortems)
  • Track record of shipping customer‑facing intelligent experiences with measurable impact (A/B testing, metrics literacy)
Job Responsibility
Job Responsibility
  • Own the end‑to‑end agent architecture: agentic planning and execution loops, long-term memory, persona/voice, knowledge routing, and policy enforcement for compliant, on‑brand conversations
  • Ship production systems that handle millions of conversations with rigorous SLOs, fallbacks, and canaries
  • design graceful degradation (e.g., human handoff) and safety guardrails (prompt‑injection, jailbreak, PII redaction)
  • Lead voice agent initiatives: Drive the development of Uber’s voice support agent—covering real-time speech recognition (ASR), text-to-speech, natural turn-taking (barge-in and endpointing), and reliable telephony/WebRTC integration
  • Advance retrieval & reasoning: Build next-generation retrieval and reasoning pipelines, where the agent can search across different knowledge sources, apply policy-driven tools, and call structured workflows and ensure that responses are consistently grounded
  • Establish evals that matter: offline rubrics, simulated scenarios, safety tests, cost/latency tradeoff suites, and LLM‑as‑judge (with calibrated human review) wired into CI/CD and experiment platforms
  • Drive automation at scale: partner with Product/Design/Operations on coverage, policy alignment, localization, and rollout strategy to better customer experience and reduce cost per contact
  • Mentor/principal‑lead multiple pods
  • set technical strategy and quality bars
  • coach senior engineers on agentic patterns, reliability, and experiment velocity
What we offer
What we offer
  • Eligible to participate in Uber's bonus program
  • may be offered an equity award & other types of comp
  • eligible for various benefits (details at https://www.uber.com/careers/benefits)
  • Fulltime
Read More
Arrow Right

Senior Vue/Nuxt Frontend Engineer

Flanks is shaking up the wealth management industry by making it simpler and way...
Location
Location
Spain , Barcelona
Salary
Salary:
Not provided
vuejs.org Logo
Vue
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Expert-level frontend skills with Vue + Nuxt, including scalable component architecture, state management, routing, and performance tuning
  • Real-time UI experience using WebSockets/SSE or other event-driven streaming patterns
  • Strong experience building complex dashboards and data visualizations (D3.js, Cytoscape, Vue Flow, or similar)
  • Comfortable using Docker / Docker Compose for local multi-service development
  • Familiarity with backend concepts, API design, and event schemas
  • 7+ years in software engineering (senior-level)
  • Fluent in Spanish and English
Job Responsibility
Job Responsibility
  • Own the architecture of the AI/multi-agent frontend (Vue + Nuxt), from early design to production readiness
  • Maintain and evolve tooling, CI/CD, testing strategy, and internal component libraries relevant to the AI product area
  • Build event-driven UIs using WebSockets/SSE to show streaming agent responses, live logs, system state transitions, execution traces
  • Ensure all real-time views are smooth, performant, and reliable
  • Build rich, interactive components for conversation UIs, agent graphs/flows, timelines, status panels, and debugging views
  • Craft dense financial data dashboards that support auditing, validation, and decision-making
  • Work closely with backend, ML, and infra teams to define events, APIs, and schemas
  • Ensure the frontend reflects the underlying multi-agent system with accuracy and clarity
  • Partner with Product and Design to create UX patterns for AI interactions
  • Mentor engineers on frontend best practices, especially around real-time apps and visualization
What we offer
What we offer
  • A cool office between Sants Estació and Plaça Espanya with stunning views of Barcelona
  • Flexible working hours and hybrid work options
  • Paid day off on your birthday
  • Weekly fresh fruit, coffee, and tea on tap
  • Friday happy hours after our all-hands meetings
  • Team-building events to bond and have fun
  • Health insurance and flexible compensation with Alan
  • A digital canteen, thanks to Nora Real Food, subsidised at 50%
  • A yearly training budget to keep growing
  • Fulltime
Read More
Arrow Right
Jobs by Category
Art and Entertainment Jobs Banking Jobs Call Center Jobs Construction Jobs Consulting Jobs Customer Service Jobs Education Jobs Energy Jobs Finance Jobs Gastronomy Jobs Health and Beauty Jobs Hospitality and Tourism Jobs Human Resources Jobs Insurance Jobs IT - Administration Jobs IT - Software Development Jobs Legal Jobs Logistics Jobs Manufacturing Jobs Marketing, Digital Marketing, SEO, SEM Jobs Media Jobs Nursing Jobs Office Administration Jobs Pharmacy Jobs Physical Work Jobs Public Relations Jobs Public Sector Jobs Purchasing Jobs Quality Control Jobs Real Estate Jobs Research and Development Jobs Sales Jobs
Job Positions Jobs by Country
United States Jobs United Kingdom Jobs India Jobs Canada Jobs Australia Jobs Germany Jobs Ireland Jobs Poland Jobs
Company
Blog About Us Contact
Follow Us
Facebook
X (Twitter)
LinkedIn
Instagram
CrawlJobs Group
ITFlashcards AllDevBlogs
© 2026 CrawlJobs Ltd. All Rights Reserved
Terms & Conditions Privacy Policy