CrawlJobs Logo

Performance Engineer, Low-Level Libraries

meta.com Logo

Meta

Location Icon

Location:
United States , Bellevue

Category Icon
Category:
IT - Software Development

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

257000.00 USD / Year ▼
Save Job
Save Icon
Apply Position

Job Description:

Are you committed to squeezing every drop of performance? Join Meta's Low-Level Libraries team and drive impact across our foundational infrastructure. We own the performance and Developer Experience (DevX) for critical C/C++ libraries like *folly*, *Jemalloc*, and GEMM (MLK, Aocl-Blas, etc.). Our work involves cutting-edge optimizations in domains such as memory management, concurrency, architecture-specific enablement, and AI frameworks. The result? Significant power savings and enabling new platforms at Meta.

Job Responsibility:

  • Develop and optimize C/C++ libraries for Meta services–memory allocation, thread pools and work scheduling, thread synchronization and lockless data structures, highly performant collections, async processing and I/O, RPC, etc
  • Analyze resource utilization in server applications (CPU, GPU, memory, network, etc.), identify bottlenecks, scope out opportunities for improved resource utilization, and implement improvements, such as modifying core libraries to optimize Meta server workloads, implementing efficiency improvements in production code (e.g., change core data structures), or improving server utilization
  • Work with internal customers and partners to define requirements
  • Reflect requirements in the team roadmap and plan out execution

Requirements:

  • Bachelor's degree in Computer Science, Computer Engineering, relevant technical field, or equivalent practical experience
  • 7+ years of professional C/C++ experience
  • Knowledge of computer architecture, CPU and memory subsystem, and OS-level resource management
  • Experience using performance-profiling tools and optimizing native applications for execution-time and memory efficiency

Nice to have:

  • Experience implementing and optimizing low-level libraries, such as memory management, threading, GEMM, data compression, or string processing
  • Knowledge of modern ISAs, such as x86 and ARM
  • Experience hand-tuning code, e.g., with loop optimizations, vectorization, parallelization, HW-architecture-specific optimizations
  • Experience developing operating-system kernels
What we offer:
  • bonus
  • equity
  • benefits

Additional Information:

Job Posted:
January 26, 2026

Icon
Meta - 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 Performance Engineer, Low-Level Libraries

Software Engineer II -iOS

Uber's applications are a critical part of daily life for hundreds of millions o...
Location
Location
India , Bangalore
Salary
Salary:
Not provided
uber.com Logo
Uber
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s degree or equivalent in Computer Science, Engineering, Mathematics or related field OR 3-years full-time Software Engineering work experience, WHICH INCLUDES 3-years total technical software engineering experience in one or more of the following areas: Programming language (e.g. Swift, Objective C, C)
  • Extensive iOS development experience, with deep proficiency in Swift and Objective-C.
  • Proven experience in building, maintaining, and shipping mobile SDKs or shared, reusable libraries.
  • Deep understanding of iOS internals, memory management (ARC, retain-cycles), and concurrency (GCD, OperationQueues).
  • Expertise in low-level debugging and performance optimization using tools like Instruments (Time Profiler, Leaks, Allocations, Hangs), lldb, and crash log analysis.
  • Familiarity with mobile observability, crash reporting, and performance monitoring principles and tools.
  • Experience developing for applications at massive scale (handling hundreds of millions of users) is a strong plus.
  • Ability to take ownership and independently drive complex, low-level platform projects to completion.
  • Strong focus on writing highly performant, testable, and resource-efficient code.
Job Responsibility
Job Responsibility
  • Design, develop, and maintain the core iOS observability SDKs responsible for crash reporting, hang/ANR detection, performance monitoring, and broad bug diagnostics.
  • Engineer highly performant, low-overhead code. Our SDKs run in the critical path of all Uber apps and must have a minimal impact on application performance and battery life.
  • Dive deep into complex crashes, hangs, memory issues, and performance bugs from across all Uber apps, performing root cause analysis and implementing platform-level fixes.
  • Develop new tooling and heuristics to automatically detect and classify a wide spectrum of bugs, from simple UI glitches to complex, multi-threaded race conditions.
  • Collaborate with backend engineers to build the data ingestion pipelines and dashboards that process terabytes of diagnostic data from our mobile fleet.
  • Act as a subject matter expert on iOS stability and performance, providing guidance, tooling, and best practices to feature teams across Uber.
  • Continuously innovate on our diagnostic capabilities, exploring new ways to capture and surface critical health metrics related to bugs, crashes, and performance from hundreds of millions of devices.
  • Uphold rigorous standards for code quality, testing (especially unit and integration testing for an SDK), and on-call practices for a Tier-0 service.
  • Fulltime
Read More
Arrow Right
New

Quantitative Engineer

Blockchain.com is connecting the world to the future of finance. As the most tru...
Location
Location
Singapore , Singapore
Salary
Salary:
Not provided
blockchain.com Logo
Blockchain
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Deep expertise in C++ and/or Rust, with strong focus on low-level optimization and performance
  • Proven experience building fast-market, low-latency trading systems, ideally for options or derivatives
  • Strong understanding of: Options theory and derivatives markets
  • Pricing models, volatility surfaces, and risk metrics (Greeks)
  • Algorithms, data structures, and memory-efficient system design
  • Strong interest in algorithmic options trading, risk management, and quantitative analysis
  • Exceptional quantitative and analytical skills
  • Bachelor’s or Master’s degree in Computer Science, Mathematics, Statistics, or equivalent experience
  • Strong written and verbal communication skills
Job Responsibility
Job Responsibility
  • Design, build, test, and deploy high-performance options trading infrastructure in C++ and Rust
  • Develop and optimize options pricing and risk-management libraries, including Greeks and volatility-driven models
  • Build and maintain low-latency, high-throughput options trading and quoting systems
  • Identify, analyze, and optimize critical performance bottlenecks in both research and production environments
  • Partner closely with options traders to: Define trading and risk requirements
  • Deliver custom software solutions for options strategies
  • Provide timely systems support during live trading
  • Take full ownership of projects from initial design through deployment and production support
  • Build efficient, reliable, and highly available applications in a scaled, performance-based environment
What we offer
What we offer
  • Full-time salary based on experience and meaningful equity in an industry-leading company
  • Work from Anywhere Policy: You can work remotely from anywhere in the world for up to 20 days per year
  • Apple equipment
  • The opportunity to be a key player and build your career at a rapidly expanding, global technology company in an emerging field
  • Flexible work culture
  • Fulltime
Read More
Arrow Right

Senior Software Engineer - ReactJS (Next-Gen Firewall)

As a Senior Software Engineer – Front End, you will be responsible for designing...
Location
Location
Vietnam , Ho Chi Minh City
Salary
Salary:
Not provided
qualgo.net Logo
Qualgo
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor's degree in Computer Science, Engineering, or a related field
  • 5+ years of experience in frontend software engineering
  • Deep expertise in ReactJS and modern hooks patterns
  • Strong proficiency in TypeScript (Non-negotiable for this role)
  • Experience building complex Enterprise B2B Dashboards or Management Consoles (not just static websites)
  • Experience with Data Visualization libraries (D3.js, Chart.js, ECharts, or similar)
  • Experience handling Real-time data via WebSockets or Server-Sent Events (SSE)
  • Analytical Mindset: Ability to understand complex technical data and figure out how to present it simply
  • Precision: In a security product, UI bugs can lead to security holes. Attention to detail is paramount
  • Collaboration: Ability to work with "low-level" system engineers and "high-level" product designers simultaneously
Job Responsibility
Job Responsibility
  • Design and build complex, data-heavy dashboards using ReactJS and TypeScript to monitor network traffic and security events
  • Develop "Zero-Trust" policy editors and firewall rule management interfaces that are intuitive yet powerful
  • Optimize rendering performance to handle thousands of real-time events per second (logs, alerts, packet flows) without browser lag
  • Work with Data Scientists to visualize AI detection models (e.g., distinguishing between normal traffic and an anomaly)
  • Implement advanced data visualizations (using D3.js, Recharts, or WebGL/Three.js) to represent global threat maps, network topology graphs, and attack vectors
  • Translate complex AI "confidence scores" into clear, human-readable risk indicators for network administrators
  • Architect and implement robust WebSocket connections to stream live firewall logs and threat alerts to the browser
  • Manage complex client-side state (using Redux, Zustand, or TanStack Query) to ensure the UI reflects the exact state of the network devices in real-time
  • Translate networking concepts (IP ranges, Subnets, DNS, VPN tunnels) into user-friendly UI components
  • Champion UI/UX best practices for "Critical Control Systems"—ensuring that blocking a threat or changing a firewall rule is safe, confirmed, and error-free
What we offer
What we offer
  • Meaningful work & impact: Work on products that protect users’ data and make a real difference in people’s lives
  • Competitive rewards: Great work deserves great rewards — enjoy competitive pay and recognition for contribution and impact you make
  • Growth & well-being: Fuel your growth with hands-on learning. Enjoy extra leaves, and premium healthcare for you and your family
  • People & workspace: Collaborate, create, and celebrate — a modern workspace built for teamwork, fun, and innovation
  • Young & dynamic environment: Work with stunning colleagues where creativity thrives, ideas are welcome, and every day brings new challenges and opportunities
Read More
Arrow Right

Staff Software Engineer - Adapters

dbt Fusion is building the next generation of data execution and connectivity in...
Location
Location
India
Salary
Salary:
Not provided
getdbt.com Logo
dbt Labs
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Strong programming background in Rust, Go, C++ or similar performance-oriented languages
  • Experience designing or maintaining SDKs, libraries, connectors, or compute/data integration codebases
  • Exposure to data warehouses, query engines, Arrow/columnar ecosystems, or execution runtimes
  • A desire to build foundational platform components that other teams and community members rely on
  • Comfort working in public code review loops, async-first communication, and collaborative RFC processes
  • A mindset grounded in debuggability, reliability, and ownership in ambiguous problem spaces
  • 6+ years experience in software engineering, with strong systems-level skills
  • 2+ years working in open-source, SDK, runtime, or low-level integration environments
  • Bachelor’s degree in Computer Science / related field or equivalent experience through industry OSS contributions
Job Responsibility
Job Responsibility
  • Design, build, and maintain Rust-first connectivity layers, execution APIs, and adapter scaffolding
  • Partner with teams building the dbt compiler, semantic layer, and runtime to evolve adapter interfaces and system boundaries
  • Contribute to Arrow/ADBC and other open-source specifications or implementations, strengthening the data ecosystem
  • Own CI, testing frameworks, profiling, error reporting surfaces, and release readiness for Fusion adapters
  • Debug complex interoperability and performance issues across drivers, engines, and compute domains
  • Collaborate with internal and community maintainers to review PRs, write RFCs, and evolve public code architectures
  • Mentor engineers on systems best practices and contribute to shared patterns around resilience, debuggability, and API clarity
Read More
Arrow Right

Founding GPU Kernel Engineer

We're looking for a Founding GPU Kernel Engineer who lives right at the boundary...
Location
Location
United States , San Francisco
Salary
Salary:
285000.00 - 315000.00 USD / Year
workatastartup.com Logo
YC Work at a Startup
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Deep expertise in GPU architecture
  • Proven track record of hand-writing kernels that match or beat vendor libraries (cuBLAS, cuDNN, CUTLASS)
  • Strong skills with low-level profiling tools: Nsight Compute, Nsight Systems, rocprof, or equivalents
  • Experience reading and reasoning about PTX/SASS or GPU assembly
  • Solid systems programming in C++ and CUDA (or ROCm/HIP)
  • Good understanding of how high-level ML operations map to hardware execution
  • Experience with distributed training systems: collective ops like all-reduce and all-gather, NCCL/RCCL, multi-node communication patterns
Job Responsibility
Job Responsibility
  • Write and hand-optimize GPU kernels for ML workloads (matmuls, attention, normalization, etc.) to set the performance ceilings
  • Profile at the microarchitectural level: look into SM utilization, warp stalls, memory bank conflicts, register pressure, instruction throughput
  • Debug performance issues by digging deep into things like clock speeds, thermal throttling, driver behavior, hardware errata
  • Turn your hand-optimization insights into automated compiler passes (working closely with our compiler team)
  • Develop performance models that predict how kernels will behave across different GPU architectures
  • Build tools and methods for systematic kernel optimization
  • Work with NVIDIA, AMD, and emerging AI accelerators - understand the common parts and what's vendor-specific
What we offer
What we offer
  • bonus
  • equity
  • benefits
  • relocation assistance
  • Fulltime
Read More
Arrow Right

Senior IOS Developer

Location
Location
Pakistan , Rawalpindi
Salary
Salary:
Not provided
translation-empire.pk Logo
Translation Empire
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • BS/MS degree in Computer Science, Engineering or a related subject
  • 5 years+ of proven working experience in software development
  • Experience with iOS frameworks such as Core Data, Core Animation, etc.
  • Experience with offline storage, threading, and performance tuning
  • Familiarity with RESTful APIs to connect iOS applications to back-end services
  • Knowledge of other web technologies and UI/UX standards
  • Understanding of Apple’s design principles and interface guidelines
  • Knowledge of low-level C-based libraries is preferred
  • Familiarity with cloud message APIs and push notifications
Job Responsibility
Job Responsibility
  • Design and build advanced applications for the iOS platform
  • Collaborate with cross-functional teams to define, design, and ship new features.
  • Help maintain code quality, organization, and automatization
  • Ensuring quality and performance of the application to specifications.
  • Identifying potential problems and resolving application bottlenecks.
  • Work on bug fixing and improving application performance.
  • Continuously discover, evaluate, and implement new technologies to maximize development efficiency.
  • Fulltime
Read More
Arrow Right

Senior Software Engineer (C/C++), SDK

As a Senior Software Engineer, Native, on our client infrastructure (SDK) team, ...
Location
Location
Austria , Vienna
Salary
Salary:
60844.00 - 90000.00 EUR / Year
sentry.io Logo
Sentry
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years relevant experience
  • Experience in writing high performance native server, desktop-applications or libraries
  • Experience in programming languages such as C and C++
  • Good written and spoken English communication skills
  • Live in the Vienna, Austria area or are willing to relocate
Job Responsibility
Job Responsibility
  • Develop first-class clients for native languages like C and C++, as well as integrations for popular frameworks in Gaming, IoT and high performance applications
  • Work in the Game Dev Experience (GDX) team to improve and evolve our native, game engine and console products
  • Puzzle over unique challenges in the fields of compilers, debugging, operating system internals, low-level optimization, and distributed systems
  • Use a variety of programming languages, systems, and technologies to own and solve problems related to mission critical software of Sentry (C and C++ — but also Rust, Python, .NET and JavaScript)
  • Collaborate with Infrastructure and Operations teams to build solutions that scale (we process over a billion events every day)
  • Write unit and integration tests that ensure the correctness of your work, as well as strong documentation to help educate both peers and customers
What we offer
What we offer
  • Eligible to participate in Sentry’s employee benefit plans/programs applicable to the candidate’s position (including incentive compensation, equity grants, paid time off, and group health insurance coverage)
  • Fulltime
Read More
Arrow Right
New

Pharmacy Intern

You’ve invested a lot of time and energy in your education. Now you want the cha...
Location
Location
United States , Southport
Salary
Salary:
18.00 - 19.75 USD / Hour
https://www.cvshealth.com/ Logo
CVS Health
Expiration Date
March 01, 2026
Flip Icon
Requirements
Requirements
  • Accepted into, or actively enrolled in, an ACPE accredited college or school of pharmacy
  • Must possess, or be in the process of obtaining, valid intern and/or technician licensure as required
  • Regular and predictable attendance, including nights and weekends
  • Ability to complete required training within designated timeframe
  • Ability to concentrate on a task over a period of time
  • Ability to pivot quickly from one task to another to meet patient and business needs
  • Ability to confirm prescription information and label accuracy, ensuring patient safety
  • Actively look for ways to help people, and do so in a friendly manner
  • Notice and understand patients’ reactions, and respond appropriately
  • Use and understand verbal and written communication to interact with patients and colleagues
Job Responsibility
Job Responsibility
  • Living our purpose by following all company SOPs at each workstation to help our Pharmacists and Technicians manage and improve patient health
  • Following pharmacy workflow procedures at each pharmacy workstation (i.e., production, pick-up, drive-thru, and drop-off) for safe and accurate prescription fulfillment
  • Contributing to positive patient experiences showing empathy and genuine care: creating heartfelt and personalized moments while serving patients at pick-up, drive-thru, and over the phone
  • keeping patients healthy by offering immunizations and other services at the register and over the phone
  • and demonstrating compassionate care by solving or escalating patient problems
  • Offering to counsel, fielding medical questions, and soliciting information on a patient’s medical history to provide optimal care, when appropriate under the direct supervision of a licensed pharmacist
  • Taking telephonic prescriptions from the prescriber, and calling the prescriber to clarify prescriptions or facilitate medication changes, where allowed by state regulation
  • Maintaining the highest level of self-awareness and providing in-the-moment coaching, training, and mentoring to pharmacy team members while sharing best practices
  • Completing basic inventory activities, as permitted by law, and as directed by the pharmacy leadership team, such as accurately putting away medication deliveries and completing cycle counts, returns-to-stocks, waiting bin inventories, etc.
  • Contributing to a high-performing team, embracing a growth mindset, and being receptive to feedback
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