Browser Infrastructure Engineer Job at Perplexity (Belgrade)

New

Infrastructure Engineer

As an Infrastructure Engineer at Tandem, you’ll be our first dedicated hire focu...

Location

United States , New York

Salary:

175000.00 - 300000.00 USD / Year

Tandem

Expiration Date

Until further notice

Requirements

Experience in infrastructure, DevOps, or SRE roles at fast-moving, product-driven tech companies
Hands-on experience with cloud infrastructure (we use AWS
GCP and Azure are nice to have)
Proficiency with infrastructure-as-code tooling (Terraform preferred)
Deep familiarity with containerization and orchestration (Docker, Kubernetes)
Experience with observability and monitoring systems (e.g., Grafana, Datadog)
Proven ability to design and improve CI/CD pipelines (we use GitHub Actions)
High NPS with your former teammates

Job Responsibility

Design and evolve CI/CD pipelines to improve speed, safety, and developer experience
Scale and maintain core infrastructure — including Kubernetes clusters, PostgreSQL databases, ephemeral browsers, and data replication workflows
Build and own our monitoring, alerting, and observability systems to ensure platform reliability and uptime
Integrate AI-powered development tools to streamline engineering workflows
Analyze and control cloud infrastructure spend while maintaining performance and reliability
Improve internal tooling and developer environments to unblock execution at every layer
Partner with engineering and product teams to anticipate scaling challenges and harden critical systems

What we offer

Fully covered medical, vision, and dental insurance
Memberships for One Medical, Talkspace, Teladoc, and Kindbody
Unlimited paid time off (PTO) and 16 weeks of parental leave
401K plan setup, FSA option, commuter benefits, and DashPass
Lunch at the office every day and Dinner at the office after 7 pm
Offers Equity

Fulltime

Scala Backend Software Engineer, Senior / Lead

To sustain the company's growth, Ledger is looking for new talents. You will sta...

Location

France , Paris

Salary:

Not provided

Ledger

Expiration Date

Until further notice

Requirements

Experienced engineer and continuous learner with 6+ years of relevant engineering experience
2+ years of technical leadership experience, including effective communication of complex concepts and cross-team coordination to ship critical products
Advanced Scala proficiency
expert-level proficiency, and advanced mastery of a second backend language (e.g., Rust, Java, Python, PHP) is a plus
Excellent collaboration and communication skills
Experience collaborating closely with QA, product management, and key stakeholders to develop and deliver on a shared vision
Led development of complex, high-performance interactive browser applications, including architecture, infrastructure, and optimization
Experience with various web architecture patterns (e.g., Microservices, Event-Driven, P2P)
Ability to apply and adapt software engineering best practices to the engineering environment
Experience in the Web3 ecosystem and in a project involving blockchain fundamentals

Job Responsibility

Develop and maintain high-performance, resilient microservices and APIs to power Ledger's products, including integrations with staking, yield, DeFi services, and blockchain explorers
Contribute to the architecture, design, and implementation of scalable solutions, proactively identifying and addressing technical challenges
Ensure software quality through testing, documentation, and performance optimization, including monitoring and alerting systems
Enhance and maintain CI/CD pipelines to secure and streamline deployment workflows
Provide technical leadership and mentorship, collaborating across teams to deliver impactful projects and improve engineering standards
Drive innovation by identifying opportunities for improvement, contributing to a shared knowledge base, and participating in technical outreach
Manage projects effectively, respecting deadlines, priorities, and deliverables.

What we offer

Equity: Employees are the foundation of our success, and we award stock options so you can share in that success as we grow
Flexibility: A hybrid work policy
Social: Annual company outing for Ledgerdary Days, plus frequent social events, snacks and drinks
Medical: Comprehensive health insurance policy offering extensive medical, dental and vision care coverage
Well-being: Personal development, coaching & fitness with our dedicated partners
Vacation: Five weeks of paid leave per year, in addition to national holidays and rest & relaxation (RTT) days
High tech: Access to high performance office equipment and gadgets
Transport: Ledger reimburses part of your preferred means of transportation
Discounts: Employee discount on all our products.

Fulltime

Senior Scala Backend Engineer

To sustain the company's growth, Ledger is looking for new talents. You will sta...

Location

France , Paris

Salary:

Not provided

Ledger

Expiration Date

Until further notice

Requirements

Experienced engineer and continuous learner with 6+ years of relevant engineering experience
2+ years of technical leadership experience, including effective communication of complex concepts and cross-team coordination to ship critical products
Advanced Scala proficiency
expert-level proficiency, and advanced mastery of a second backend language (e.g., Rust, Java, Python, PHP) is a plus
Excellent collaboration and communication skills
Experience collaborating closely with QA, product management, and key stakeholders to develop and deliver on a shared vision
Led development of complex, high-performance interactive browser applications, including architecture, infrastructure, and optimization
Experience with various web architecture patterns (e.g., Microservices, Event-Driven, P2P)
Ability to apply and adapt software engineering best practices to the engineering environment
Experience in the Web3 ecosystem and in a project involving blockchain fundamentals

Job Responsibility

Develop and maintain high-performance, resilient microservices and APIs to power Ledger's products, including integrations with staking, yield, DeFi services, and blockchain explorers
Contribute to the architecture, design, and implementation of scalable solutions, proactively identifying and addressing technical challenges
Ensure software quality through testing, documentation, and performance optimization, including monitoring and alerting systems
Enhance and maintain CI/CD pipelines to secure and streamline deployment workflows
Provide technical leadership and mentorship, collaborating across teams to deliver impactful projects and improve engineering standards
Drive innovation by identifying opportunities for improvement, contributing to a shared knowledge base, and participating in technical outreach
Manage projects effectively, respecting deadlines, priorities, and deliverables

What we offer

Equity: Employees are the foundation of our success, and we award stock options so you can share in that success as we grow
Flexibility: A hybrid work policy
Social: Annual company outing for Ledgerdary Days, plus frequent social events, snacks and drinks
Medical: Comprehensive health insurance policy offering extensive medical, dental and vision care coverage
Well-being: Personal development, coaching & fitness with our dedicated partners
Vacation: Five weeks of paid leave per year, in addition to national holidays and rest & relaxation (RTT) days
High tech: Access to high performance office equipment and gadgets
Transport: Ledger reimburses part of your preferred means of transportation
Discounts: Employee discount on all our products

Fulltime

Senior Web Security Engineer, Browser Platform

Working on the Security Functional Team, you'll play a pivotal role in ensuring ...

Location

Salary:

178500.00 USD / Year

DuckDuckGo

Expiration Date

Until further notice

Requirements

7+ years of experience in web or application security (performing security assessments, vulnerability research, penetration testing, or secure code review)
Advanced programming or scripting experience with JavaScript
Experience with at least one WebView technology (WebKit, WebView2, Chromium WebView, etc.) and understanding of browser security models (SOP, CSP, CORS, SameSite cookies)
Hands-on experience identifying and exploiting web vulnerabilities (XSS, CSRF, injection attacks, authorization flaws, etc.)
Familiarity with security testing tools and frameworks
Experience partnering and collaborating with Product Engineers, advising on security matters and helping teams ship secure code faster
Experience shaping how an organisation thinks about security - driving best practices, improving processes, and raising the bar across teams

Job Responsibility

Conduct browser security audits (special pages, DuckAI integrations, password manager, etc.)
Execute on SERP security mitigations (XSS prevention, tooling development to help engineers write safer code)
Manage application security scanning infrastructure setup (aka SAST/DAST integrations in GitHub)
Deliver on Internal red-team operations (simulated attack scenarios)
Support security triage

What we offer

Offers Equity
Paid parental leave
Office setup allowance
Co-working allowances

Fulltime

Senior Software Engineer

We are looking for a Frontend engineer for our product team who will be responsi...

Location

United States , Portland

Salary:

Not provided

Tyfone

Expiration Date

Until further notice

Requirements

3-5 years of experience in software development, with a strong focus on HTML, CSS, SASS & CSS
Bachelor’s or Master’s degree in Computer Science or related fields
Very good understanding and hands-on experience in HTML 5, CSS, SASS & CSS
Very good understanding and hands-on experience in Front-end frameworks like Bootstrap, Ionic, etc
Prior experience in JavaScript/Typescript (ES6) and any JavaScript framework/library like, Angular, React, etc
Prior experience with building Responsive interfaces and handling cross-browser compatibility
Analytical and creative problem-solving skills
Good communication skills

Job Responsibility

Develop and engineer Frontend infrastructure for our products
Design and develop responsive interfaces using HTML5 technologies to work across a variety of browsers, mobiles, and platforms
Finding and resolving cross-browser browser compatibility issues
Mentor team members and manage team activities for timely delivery

New

Browser C++ Engineer

Perplexity AI is looking for an experienced C++ Chromium Engineer to join our sm...

Location

Belgrade; London; Berlin

Salary:

Not provided

Perplexity

Expiration Date

Until further notice

Requirements

4+ years industry experience
Expertise in C++ Chromium codebase
Enjoys the craft of building nice UI, creating a good UX, and writing code that can be reused by others
Understands how to manage performance and speed
Comfortable working with a small, fast-moving team, must be willing to dive in and take ownership
A passion for shipping.

Job Responsibility

Develop a performant Chromium-based browser that millions of users around the world enjoy using
Work closely with product teams to implement novel Desktop and mobile experiences
Work closely with design teams to design fast and intuitive UI
Collaborate with data science and machine learning teams to instrument, analyze, and improve the end-to-end experience
Work with infrastructure and QA teams on deployment processes, including testing, release, and monitoring.

Fulltime

New

Tech Lead Manager - Agents

Perplexity is seeking a TLM (Tech Lead Manager) to lead and grow our highly driv...

Location

United States , San Francisco

Salary:

300000.00 - 385000.00 USD / Year

Perplexity

Expiration Date

Until further notice

Requirements

Strong foundational familiarity with the full AI product stack
Proficiency in Python
Domain expertise in at least one of the following areas: Context engineering and tool interfaces for frontier AI models, Post-training and reinforcement learning (particularly for multimodal models), Browser technologies (CDP, Playwright, extension development, etc.)
Strong product intuition and taste for user experience excellence
Strong background and hands-on technical experience with frontier models
Strong organizational skills for managing and delivering parallel technical projects
Experience managing engineering teams, including recruiting, growing, and retaining high-caliber talent
8+ years of engineering experience, with at least 3 of those years as an engineering manager

Job Responsibility

Provide technical leadership across multiple layers of a rapidly growing product in the AI agents space
Develop and leverage cutting-edge AI models, infrastructure, and browser technologies
Exercise sharp technical & product intuition to guide the team’s system architectures and product roadmaps
Drive product reliability, code quality, AI evaluation, testing, and maintenance for the broader team
Oversee hiring, onboarding, and mentorship for a rapidly growing team
Interface with the Perplexity co-founders to deliver strategic objectives

What we offer

Equity
Health
Dental
Vision
Retirement
Fitness
Commuter and dependent care accounts

Fulltime

New

AI Software Engineer - Comet Agents

Perplexity is seeking an energetic engineer to join our highly driven Comet Agen...

Location

United States , San Francisco

Salary:

210000.00 - 385000.00 USD / Year

Perplexity

Expiration Date

Until further notice

Requirements

Strong foundational familiarity with the full AI product stack
Proficiency in Python (bonus points for TypeScript, Go, and/or Rust)
Significant experience in at least one of the following areas: Context engineering and tool interfaces for frontier AI models
Post-training and reinforcement learning (particularly for multimodal models)
Browser technologies (CDP, Playwright, extension development, etc.)
Strong product intuition and taste for user experience excellence
Comfortable working with a small, fast-moving team, must be willing to dive in and take ownership
A passion for shipping products that surprise and delight

Job Responsibility

Drive cutting-edge AI capabilities across multiple layers of a rapidly growing product in the AI agents space
Develop and leverage cutting-edge AI models, infrastructure, and browser technologies to advance the capability frontier and scale those capabilities for a rapidly growing userbase
Ensure a high craft and quality bar, in both AI agent performance and user experience
Collaborate with fellow engineers, designers, product managers, data scientists, and others across the company to integrate core Perplexity functionality into Comet agents and vice-versa
Contribute to product reliability, code quality, AI evaluation, testing, and maintenance across the broader team

What we offer

equity
health
dental
vision
retirement
fitness
commuter and dependent care accounts

Fulltime

Browser Infrastructure Engineer

Perplexity

Location:
Serbia , Belgrade

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
February 21, 2026

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Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:February 21, 2026

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