Front-end JavaScript or TypeScript frameworks jobs in United States

Staff Security Engineer

Duolingo · Posted Nov 9, 2026

New York City, New York, United States
On-site
Full-time · Senior
$204K–$306K per year

Apply with RefersoAI Apply on careers page

As a Staff Security Engineer, you will shape and deliver Duolingo’s security strategy, safeguarding our learners, employees, systems, and services.

Compensation

Salary Range: $204,000—$306,000 USD

Responsibilities

Set technical direction for security across Duolingo’s applications, cloud infrastructure, and engineering systems.
Lead complex, multi-team security initiatives from problem definition and design through implementation, measurement, and ongoing ownership.
Design and build scalable security services, controls, and automation that prevent, detect, and remediate risks with minimal manual effort.
Partner with engineering teams to threat model systems, review architecture and code, prioritize risks, and deliver practical mitigations.
Strengthen security across the software-development lifecycle, including secrets management, dependency security, vulnerability management, and CI/CD controls.

Requirements

Nice to have: AWS
Nice to have: GCP
Nice to have: AI-assisted tooling

Skills

application security product security cloud security infrastructure security detection and response security automation software engineering scripting languages threat modeling architecture review code review vulnerability analysis infrastructure as code CI/CD AWS GCP

Benefits

holistic well-being
equity compensation

See full job description

Talent Mobility Specialist

Duolingo · Posted Nov 9, 2026

Open

Pittsburgh, Pennsylvania, United States
Full-time · Senior
$111K–$150K per year
5+ years

Apply with RefersoAI Apply on careers page

Manage Duolingo’s global talent mobility program, overseeing immigration, relocation, and vendor coordination to support international and domestic talent movement.

Compensation

Salary Range: $110,500—$149,500 USD

Responsibilities

Own day-to-day operations of the Global Mobility program
Administer relocation policies, packages, eligibility, and exceptions
Manage employment-based immigration matters from assessment through renewal
Assess immigration and mobility needs for hiring, transfers, and business changes
Champion mobility program with candidates and Talent Acquisition

Requirements

Nice to have: international mobility experience
Nice to have: policy design
Nice to have: HR information systems
Nice to have: tax coordination
Nice to have: mobility case-management technology

Skills

corporate immigration global mobility relocation case management project management cross-functional partnership data analysis case data service metrics HR information systems

See full job description

Quality Manager

ALTEN Technology USA · Posted Nov 9, 2026

Open

Troy, Michigan, United States
Manager
6+ years

Apply with RefersoAI Apply on careers page

Lead and manage the Quality Management System for ALTEN Technology USA, ensuring compliance with ISO standards, client requirements, and continuous improvement initiatives.

Responsibilities

Maintain and improve the ALTEN Technology USA QMS
Organize and support company level ISO and AS certification and client audits, including ISO 9001, AS 9100, ISO14001 and other applicable standards
Ensure project compliance with the ALTEN Delivery Framework (ADF), contractual requirements, and applicable quality standards
Monitor quality KPIs, including Right First Time (RFT), On-Time Delivery (OTD), and customer satisfaction
Identify quality risks, nonconformities, and process gaps; implement corrective and preventive actions (CAPA)

Requirements

Bachelor’s degree in engineering, Quality Management, Business, or a related field
Nice to have: APQP
Nice to have: PPAP
Nice to have: automotive quality core tools
Nice to have: AS 9100

See full job description

Product Designer, Thrive Intern

Duolingo · Posted Nov 9, 2026

Open

Pittsburgh, Pennsylvania, United States
On-site
Internship · Intern
$43–$45 per hour

Apply with RefersoAI Apply on careers page

A summer internship for second-year undergraduates to work on real-world design projects while receiving mentorship and training.

Compensation

Hourly Range for this internship is: $43—$45 USD

Responsibilities

Work with a small group to complete a challenging, real-world project
Develop technical skills through hands-on training, workshops, and guest lectures
Receive coaching and mentorship from a Duolingo Product Designer
Build lasting relationships with others who share a passion for making the best education universally available

Requirements

Bachelor’s degree in Design
Bachelor’s degree in Human-Computer Interaction
related technical field
Nice to have: UI projects
Nice to have: group/team project experience

Skills

Figma Adobe XD Origami Sketch UI design Product Design

Benefits

Frequent company-wide dinners
monthly celebrations
social clubs

See full job description

System Validation Engineer

ALTEN Technology USA · Posted Nov 9, 2026

Open

Foster City, California, United States
On-site
Full-time
$115K–$135K per year
5+ years

Apply with RefersoAI Apply on careers page

Lead system-level validation for vehicle systems, ensuring integrated multi-ECU systems meet specifications and support Robotaxi Service Operations.

Compensation

Salary Range: $115,000-$135,000/K

Responsibilities

Own system-level validation for assigned System Technical Specification documents
Create and maintain Design Verification Plans with full requirement-to-test-case traceability
Define system-level test configurations from system boundary diagrams
Design, build and commission system test benches
Execute multi-ECU and cross-domain integration, functional and regression testing

Requirements

Bachelor's or Master's degree in Electrical Engineering, Mechanical Engineering, Computer Engineering or equivalent
Nice to have: HIL or system test benches
Nice to have: rapid prototyping tools (e.g. dSpace)
Nice to have: xIL environments
Nice to have: CI-integrated test infrastructure

Skills

vehicle system validation system integration systems engineering automotive communication protocols (CAN, LIN, Ethernet)network topologies 12V power management instrumentation restbus simulation fault injection advanced data analysis system test plans (DVPs)requirements traceability SFMEA Python Polarion IBM DOORS dSpace

See full job description

Engineering Manager, Data Platform

Alloy · Posted Nov 9, 2026

Open

New York City, New York, United States
Hybrid
Manager
$255K–$295K per year

Apply with RefersoAI Apply on careers page

Lead and manage the Data Platform team, driving analytics engineering and platform delivery.

Compensation

This position has a salary range of $255,000 - $295,000.

Responsibilities

Manage the Data Platform team: hire, grow, set direction
Lead a team of two engineers, run one-on-ones and performance reviews
Hire as the team grows, define roles, run interview loops
Own the data platform end to end: ingestion, change data capture, Snowflake warehouse, dbt, semantic layer
Ship native warehouse data sharing into customers' environments

Requirements

Nice to have: native warehouse data delivery
Nice to have: Snowflake Data Sharing
Nice to have: Marketplace
Nice to have: fintech background
Nice to have: financial services

Skills

SQL dbt Snowflake data modeling ingestion change data capture semantic layer Artie data engineering analytics engineering

Benefits

Unlimited PTO
flexible work policy
employee stock options
medical,dental,vision plans with HSA
FSA options

See full job description

Mission Management Program Manager

Astranis · Posted Nov 10, 2026

Open

San Francisco, California, United States
$155K–$198K per year
2+ years

Apply with RefersoAI Apply on careers page

Coordinate end-to-end execution of assigned missions across spacecraft engineering, ground systems, network services, launch, operations, and customer teams.

Compensation

$155,000—$198,000 USD

Responsibilities

Develop and maintain external facing customer schedules, progress updates and technical briefing content for each customer
Lead planning and preparation for recurring weekly mission execution reviews and ensure critical issues are surfaced and resolved
Identify cross-functional dependencies and ensure appropriate owners and actions are established
Coordinate mission readiness activities leading to launch, deployment, commissioning, and operational handoff
Establish and maintain mission readiness criteria and track organizational readiness against those criteria

Requirements

Nice to have: spacecraft
Nice to have: launch
Nice to have: ground systems

Skills

program management systems engineering mission operations aerospace defense complex technical environment cross-functional technical programs stakeholder management organizational skills analytical skills communication influence problem identification

Benefits

equity package
health insurance
disability insurance
life insurance
401(k) retirement planning

See full job description

Enterprise Applied AI Engineer

AssemblyAI · Posted Nov 9, 2026

Open

San Francisco, California, United States +2 more
Hybrid
Full-time · Senior
$240K–$300K per year

Apply with RefersoAI Apply on careers page

Technical lead for strategic enterprise deals, acting as the technical counterpart to Enterprise Account Executives for large accounts.

Locations (3)

San Francisco, California, United States
New York City, New York, United States
London, London, United Kingdom

Compensation

Salary range (US): $240,000 – $300,000 OTE. Salary range (London): £145,000 – £175,000 OTE

Responsibilities

Act as the technical lead on strategic enterprise deals, from discovery through vendor selection and production rollout
Map and multi-thread the customer's technical organization (developers, data science and evaluation teams, platform, security), building champions at each level
Design and run evaluations with customers: agree on success criteria, test sets, and metrics up front
Present evaluation results and technical recommendations to engineering leaders and executives
Advise on architecture, deployment options, scaling, concurrency, data privacy, and compliance

Requirements

Nice to have: speech AI
Nice to have: audio AI
Nice to have: voice AI products

Skills

customer-facing technical role Python TypeScript JavaScript ML evaluation AWS GCP Azure SOC 2 HIPAA GDPR real-time streaming APIs WebSockets audio fundamentals Claude Cursor

Benefits

equity grants
100% employer-paid benefits
401k match up to 4%

See full job description

Applied AI Engineer

AssemblyAI · Posted Nov 9, 2026

Open

San Francisco, California, United States +2 more
On-site
Full-time
$150K–$250K per year

Apply with RefersoAI Apply on careers page

Applied AI Engineers partner with Account Executives to provide technical pre‑sales support, build demos, debug integrations, and influence product roadmap for voice AI solutions.

Locations (3)

San Francisco, California, United States
New York City, New York, United States
London, England, United Kingdom

Compensation

Salary range (US): $150,000 – $250,000 OTE Salary range (London): £90,000 – £145,000 OTE

Responsibilities

Partner with Digital Native Account Executives to own the technical side of their book
Write code for customers, build MVPs, debug integrations, tune models on real audio
Help customers evaluate and test products, design benchmarks, catch mistakes early
Tweak configurations and design robust implementations
Build demos, prototypes, and proofs of concept in customer stacks

Requirements

engineering degree
coding bootcamp
software engineering role
sales or solutions engineering role

Skills

Python TypeScript JavaScript web APIs WebSockets real‑time data streaming audio fundamentals AI tools like Claude or Cursor audio codecs Claude Cursor

Benefits

competitive equity grants
100% employer‑paid benefits
401k match up to 4%
health insurance

See full job description

Project Manager -Civil Engineer, Land Development

Atwell, LLC · Posted Nov 9, 2026

Open

Raleigh, North Carolina, United States
Hybrid
Full-time · Senior
10+ years

Apply with RefersoAI Apply on careers page

Serve as a technical leader and subject matter expert in residential and commercial land development projects.

Compensation

Competitive Compensation packages. Annual bonuses, spot bonuses and peer recognition awards

Responsibilities

Lead project teams in the preparation, review, and delivery of preliminary and final site plans, engineering designs, and construction documents.
Manage project schedules, budgets, quality control, and client expectations throughout the project lifecycle.
Prepare technical reports, recommendations, and project analyses to support successful project execution.
Review and evaluate survey data, existing site conditions, and development constraints, including legal descriptions, ALTA surveys, easement documents, condominium documents, and related records.
Prepare and oversee engineering analyses and design documentation, including hydrologic and hydraulic studies, due diligence and site feasibility reports, Engineer’s opinions of probable construction costs, utility system calculations, detention and retention pond design calculations, stormwater management reports, storm sewer design reports, earthwork and volume calculations, preliminary and final grading plans, local, state, and regulatory permit applications, and StormCAD and WaterCAD modeling and analysis.

Requirements

Bachelor's degree in Civil Engineering

Skills

Professional Engineer (PE) license site development design permitting construction documentation project management AutoCAD Civil 3D StormCAD WaterCAD

Benefits

Generous Paid Time Off
Paid Parental Leave
Flexible work schedules
Tenure Awards — Travel Vouchers
401K match - 1:1 up to 4%

See full job description

Staff Security Engineer

Duolingo · Posted Nov 9, 2026

Open

New York City, New York, United States
On-site
Full-time · Senior
$204K–$306K per year

Apply with RefersoAI Apply on careers page

As a Staff Security Engineer, you will shape and deliver Duolingo’s security strategy, safeguarding our learners, employees, systems, and services.

Compensation

Salary Range: $204,000—$306,000 USD

Responsibilities

Set technical direction for security across Duolingo’s applications, cloud infrastructure, and engineering systems.
Lead complex, multi-team security initiatives from problem definition and design through implementation, measurement, and ongoing ownership.
Design and build scalable security services, controls, and automation that prevent, detect, and remediate risks with minimal manual effort.
Partner with engineering teams to threat model systems, review architecture and code, prioritize risks, and deliver practical mitigations.
Strengthen security across the software-development lifecycle, including secrets management, dependency security, vulnerability management, and CI/CD controls.

Requirements

Nice to have: AWS
Nice to have: GCP
Nice to have: AI-assisted tooling

Skills

Benefits

holistic well-being
equity compensation

See full job description

Talent Mobility Specialist

Duolingo · Posted Nov 9, 2026

Open

Pittsburgh, Pennsylvania, United States
Full-time · Senior
$111K–$150K per year
5+ years

Apply with RefersoAI Apply on careers page

Manage Duolingo’s global talent mobility program, overseeing immigration, relocation, and vendor coordination to support international and domestic talent movement.

Compensation

Salary Range: $110,500—$149,500 USD

Responsibilities

Own day-to-day operations of the Global Mobility program
Administer relocation policies, packages, eligibility, and exceptions
Manage employment-based immigration matters from assessment through renewal
Assess immigration and mobility needs for hiring, transfers, and business changes
Champion mobility program with candidates and Talent Acquisition

Requirements

Nice to have: international mobility experience
Nice to have: policy design
Nice to have: HR information systems
Nice to have: tax coordination
Nice to have: mobility case-management technology

Skills

corporate immigration global mobility relocation case management project management cross-functional partnership data analysis case data service metrics HR information systems

See full job description

Quality Manager

ALTEN Technology USA · Posted Nov 9, 2026

Open

Troy, Michigan, United States
Manager
6+ years

Apply with RefersoAI Apply on careers page

Lead and manage the Quality Management System for ALTEN Technology USA, ensuring compliance with ISO standards, client requirements, and continuous improvement initiatives.

Responsibilities

Maintain and improve the ALTEN Technology USA QMS
Organize and support company level ISO and AS certification and client audits, including ISO 9001, AS 9100, ISO14001 and other applicable standards
Ensure project compliance with the ALTEN Delivery Framework (ADF), contractual requirements, and applicable quality standards
Monitor quality KPIs, including Right First Time (RFT), On-Time Delivery (OTD), and customer satisfaction
Identify quality risks, nonconformities, and process gaps; implement corrective and preventive actions (CAPA)

Requirements

Bachelor’s degree in engineering, Quality Management, Business, or a related field
Nice to have: APQP
Nice to have: PPAP
Nice to have: automotive quality core tools
Nice to have: AS 9100

See full job description

Product Designer, Thrive Intern

Duolingo · Posted Nov 9, 2026

Open

Pittsburgh, Pennsylvania, United States
On-site
Internship · Intern
$43–$45 per hour

Apply with RefersoAI Apply on careers page

A summer internship for second-year undergraduates to work on real-world design projects while receiving mentorship and training.

Compensation

Hourly Range for this internship is: $43—$45 USD

Responsibilities

Work with a small group to complete a challenging, real-world project
Develop technical skills through hands-on training, workshops, and guest lectures
Receive coaching and mentorship from a Duolingo Product Designer
Build lasting relationships with others who share a passion for making the best education universally available

Requirements

Bachelor’s degree in Design
Bachelor’s degree in Human-Computer Interaction
related technical field
Nice to have: UI projects
Nice to have: group/team project experience

Skills

Figma Adobe XD Origami Sketch UI design Product Design

Benefits

Frequent company-wide dinners
monthly celebrations
social clubs

See full job description

System Validation Engineer

ALTEN Technology USA · Posted Nov 9, 2026

Open

Foster City, California, United States
On-site
Full-time
$115K–$135K per year
5+ years

Apply with RefersoAI Apply on careers page

Lead system-level validation for vehicle systems, ensuring integrated multi-ECU systems meet specifications and support Robotaxi Service Operations.

Compensation

Salary Range: $115,000-$135,000/K

Responsibilities

Own system-level validation for assigned System Technical Specification documents
Create and maintain Design Verification Plans with full requirement-to-test-case traceability
Define system-level test configurations from system boundary diagrams
Design, build and commission system test benches
Execute multi-ECU and cross-domain integration, functional and regression testing

Requirements

Bachelor's or Master's degree in Electrical Engineering, Mechanical Engineering, Computer Engineering or equivalent
Nice to have: HIL or system test benches
Nice to have: rapid prototyping tools (e.g. dSpace)
Nice to have: xIL environments
Nice to have: CI-integrated test infrastructure

Skills

See full job description

Engineering Manager, Data Platform

Alloy · Posted Nov 9, 2026

Open

New York City, New York, United States
Hybrid
Manager
$255K–$295K per year

Apply with RefersoAI Apply on careers page

Lead and manage the Data Platform team, driving analytics engineering and platform delivery.

Compensation

This position has a salary range of $255,000 - $295,000.

Responsibilities

Manage the Data Platform team: hire, grow, set direction
Lead a team of two engineers, run one-on-ones and performance reviews
Hire as the team grows, define roles, run interview loops
Own the data platform end to end: ingestion, change data capture, Snowflake warehouse, dbt, semantic layer
Ship native warehouse data sharing into customers' environments

Requirements

Nice to have: native warehouse data delivery
Nice to have: Snowflake Data Sharing
Nice to have: Marketplace
Nice to have: fintech background
Nice to have: financial services

Skills

SQL dbt Snowflake data modeling ingestion change data capture semantic layer Artie data engineering analytics engineering

Benefits

Unlimited PTO
flexible work policy
employee stock options
medical,dental,vision plans with HSA
FSA options

See full job description

Mission Management Program Manager

Astranis · Posted Nov 10, 2026

Open

San Francisco, California, United States
$155K–$198K per year
2+ years

Apply with RefersoAI Apply on careers page

Coordinate end-to-end execution of assigned missions across spacecraft engineering, ground systems, network services, launch, operations, and customer teams.

Compensation

$155,000—$198,000 USD

Responsibilities

Develop and maintain external facing customer schedules, progress updates and technical briefing content for each customer
Lead planning and preparation for recurring weekly mission execution reviews and ensure critical issues are surfaced and resolved
Identify cross-functional dependencies and ensure appropriate owners and actions are established
Coordinate mission readiness activities leading to launch, deployment, commissioning, and operational handoff
Establish and maintain mission readiness criteria and track organizational readiness against those criteria

Requirements

Nice to have: spacecraft
Nice to have: launch
Nice to have: ground systems

Skills

Benefits

equity package
health insurance
disability insurance
life insurance
401(k) retirement planning

See full job description

Enterprise Applied AI Engineer

AssemblyAI · Posted Nov 9, 2026

Open

San Francisco, California, United States +2 more
Hybrid
Full-time · Senior
$240K–$300K per year

Apply with RefersoAI Apply on careers page

Technical lead for strategic enterprise deals, acting as the technical counterpart to Enterprise Account Executives for large accounts.

Locations (3)

San Francisco, California, United States
New York City, New York, United States
London, London, United Kingdom

Compensation

Salary range (US): $240,000 – $300,000 OTE. Salary range (London): £145,000 – £175,000 OTE

Responsibilities

Act as the technical lead on strategic enterprise deals, from discovery through vendor selection and production rollout
Map and multi-thread the customer's technical organization (developers, data science and evaluation teams, platform, security), building champions at each level
Design and run evaluations with customers: agree on success criteria, test sets, and metrics up front
Present evaluation results and technical recommendations to engineering leaders and executives
Advise on architecture, deployment options, scaling, concurrency, data privacy, and compliance

Requirements

Nice to have: speech AI
Nice to have: audio AI
Nice to have: voice AI products

Skills

customer-facing technical role Python TypeScript JavaScript ML evaluation AWS GCP Azure SOC 2 HIPAA GDPR real-time streaming APIs WebSockets audio fundamentals Claude Cursor

Benefits

equity grants
100% employer-paid benefits
401k match up to 4%

See full job description

Applied AI Engineer

AssemblyAI · Posted Nov 9, 2026

Open

San Francisco, California, United States +2 more
On-site
Full-time
$150K–$250K per year

Apply with RefersoAI Apply on careers page

Applied AI Engineers partner with Account Executives to provide technical pre‑sales support, build demos, debug integrations, and influence product roadmap for voice AI solutions.

Locations (3)

San Francisco, California, United States
New York City, New York, United States
London, England, United Kingdom

Compensation

Salary range (US): $150,000 – $250,000 OTE Salary range (London): £90,000 – £145,000 OTE

Responsibilities

Partner with Digital Native Account Executives to own the technical side of their book
Write code for customers, build MVPs, debug integrations, tune models on real audio
Help customers evaluate and test products, design benchmarks, catch mistakes early
Tweak configurations and design robust implementations
Build demos, prototypes, and proofs of concept in customer stacks

Requirements

engineering degree
coding bootcamp
software engineering role
sales or solutions engineering role

Skills

Python TypeScript JavaScript web APIs WebSockets real‑time data streaming audio fundamentals AI tools like Claude or Cursor audio codecs Claude Cursor

Benefits

competitive equity grants
100% employer‑paid benefits
401k match up to 4%
health insurance

See full job description

Project Manager -Civil Engineer, Land Development

Atwell, LLC · Posted Nov 9, 2026

Open

Raleigh, North Carolina, United States
Hybrid
Full-time · Senior
10+ years

Apply with RefersoAI Apply on careers page

Serve as a technical leader and subject matter expert in residential and commercial land development projects.

Compensation

Competitive Compensation packages. Annual bonuses, spot bonuses and peer recognition awards

Responsibilities

Lead project teams in the preparation, review, and delivery of preliminary and final site plans, engineering designs, and construction documents.
Manage project schedules, budgets, quality control, and client expectations throughout the project lifecycle.
Prepare technical reports, recommendations, and project analyses to support successful project execution.
Review and evaluate survey data, existing site conditions, and development constraints, including legal descriptions, ALTA surveys, easement documents, condominium documents, and related records.
Prepare and oversee engineering analyses and design documentation, including hydrologic and hydraulic studies, due diligence and site feasibility reports, Engineer’s opinions of probable construction costs, utility system calculations, detention and retention pond design calculations, stormwater management reports, storm sewer design reports, earthwork and volume calculations, preliminary and final grading plans, local, state, and regulatory permit applications, and StormCAD and WaterCAD modeling and analysis.

Requirements

Bachelor's degree in Civil Engineering

Skills

Professional Engineer (PE) license site development design permitting construction documentation project management AutoCAD Civil 3D StormCAD WaterCAD

Benefits

Generous Paid Time Off
Paid Parental Leave
Flexible work schedules
Tenure Awards — Travel Vouchers
401K match - 1:1 up to 4%

See full job description