Senior/Staff Frontend Engineer Job at Klaxoon (Prague)

New

Senior/Staff Software Engineer, OfficeJS

At Harvey, we’re transforming how legal and professional services operate — not ...

Location

United States , New York

Salary:

200000.00 - 312000.00 USD / Year

Harvey

Expiration Date

Until further notice

Requirements

5+ years of software engineering experience, with significant depth in Office Add-in development using OfficeJS
Experience building and shipping a production Office Add-in product, ideally one used at enterprise scale
Strong proficiency in JavaScript/TypeScript, HTML, and CSS
Deep understanding of Office Add-in architecture, requirement sets, manifest configuration, and cross-platform considerations
Experience with React or similar modern frontend frameworks
Track record of shipping highly intuitive products with strong attention to detail
Familiarity with Microsoft Office Add-in guidelines and AppSource submission process is a plus

Job Responsibility

Own and lead the technical direction of Harvey in Word, our flagship Office Add-in product, alongside our other Microsoft Office integrations
Build the AI-native editing experience: agentic document rewrites, real-time redlining, and playbook automation that transforms how lawyers work
Design and build sophisticated integrations with Microsoft Word using the OfficeJS API, including document manipulation, playbook reviews, and AI-assisted drafting
Architect scalable, maintainable solutions that handle the constraints and quirks of the Office Add-in environment across platforms (Windows, Mac, Web)
Build polished, high-performance interfaces with crisp interactions and resilient error handling
Collaborate with product, design, and backend teams to shape APIs and UX for AI-powered features like streaming results and tool-calling workflows
Navigate Office Add-in requirement sets, versioning, and cross-platform compatibility to ensure broad, reliable support
Contribute to Harvey in Outlook and shape the next generation of agentic AI interfaces across the Microsoft suite
Mentor engineers, drive technical decisions, and raise the bar on quality and developer experience

What we offer

Comprehensive health, dental and vision coverage
retirement benefits (401k match up to 4%)
flexible PTO
equity plan
bonus

Fulltime

New

Senior/Staff Software Engineer, OfficeJS

At Harvey, we’re transforming how legal and professional services operate — not ...

Location

United States , San Francisco or New York City

Salary:

200000.00 - 312000.00 USD / Year

Harvey

Expiration Date

Until further notice

Requirements

5+ years of software engineering experience, with significant depth in Office Add-in development using OfficeJS
Experience building and shipping a production Office Add-in product, ideally one used at enterprise scale
Strong proficiency in JavaScript/TypeScript, HTML, and CSS
Deep understanding of Office Add-in architecture, requirement sets, manifest configuration, and cross-platform considerations
Experience with React or similar modern frontend frameworks
Track record of shipping highly intuitive products with strong attention to detail
Familiarity with Microsoft Office Add-in guidelines and AppSource submission process is a plus

Job Responsibility

Own and lead the technical direction of Harvey in Word, our flagship Office Add-in product, alongside our other Microsoft Office integrations
Build the AI-native editing experience: agentic document rewrites, real-time redlining, and playbook automation that transforms how lawyers work
Design and build sophisticated integrations with Microsoft Word using the OfficeJS API, including document manipulation, playbook reviews, and AI-assisted drafting
Architect scalable, maintainable solutions that handle the constraints and quirks of the Office Add-in environment across platforms (Windows, Mac, Web)
Build polished, high-performance interfaces with crisp interactions and resilient error handling
Collaborate with product, design, and backend teams to shape APIs and UX for AI-powered features like streaming results and tool-calling workflows
Navigate Office Add-in requirement sets, versioning, and cross-platform compatibility to ensure broad, reliable support
Contribute to Harvey in Outlook and shape the next generation of agentic AI interfaces across the Microsoft suite
Mentor engineers, drive technical decisions, and raise the bar on quality and developer experience

What we offer

Equity plan
Bonus
Comprehensive health, dental and vision coverage
Retirement benefits (401k match up to 4%)
Flexible PTO

Fulltime

New

Senior/Staff Software Engineer, OfficeJS

At Harvey, we’re transforming how legal and professional services operate — not ...

Location

United States , San Francisco

Salary:

200000.00 - 312000.00 USD / Year

Harvey

Expiration Date

Until further notice

Requirements

5+ years of software engineering experience, with significant depth in Office Add-in development using OfficeJS
Experience building and shipping a production Office Add-in product, ideally one used at enterprise scale
Strong proficiency in JavaScript/TypeScript, HTML, and CSS
Deep understanding of Office Add-in architecture, requirement sets, manifest configuration, and cross-platform considerations
Experience with React or similar modern frontend frameworks
Track record of shipping highly intuitive products with strong attention to detail
Familiarity with Microsoft Office Add-in guidelines and AppSource submission process is a plus

Job Responsibility

Own and lead the technical direction of Harvey in Word, our flagship Office Add-in product, alongside our other Microsoft Office integrations
Build the AI-native editing experience: agentic document rewrites, real-time redlining, and playbook automation that transforms how lawyers work
Design and build sophisticated integrations with Microsoft Word using the OfficeJS API, including document manipulation, playbook reviews, and AI-assisted drafting
Architect scalable, maintainable solutions that handle the constraints and quirks of the Office Add-in environment across platforms (Windows, Mac, Web)
Build polished, high-performance interfaces with crisp interactions and resilient error handling
Collaborate with product, design, and backend teams to shape APIs and UX for AI-powered features like streaming results and tool-calling workflows
Navigate Office Add-in requirement sets, versioning, and cross-platform compatibility to ensure broad, reliable support
Contribute to Harvey in Outlook and shape the next generation of agentic AI interfaces across the Microsoft suite
Mentor engineers, drive technical decisions, and raise the bar on quality and developer experience

What we offer

Offers Equity
Offers Bonus
Comprehensive health, dental and vision coverage
retirement benefits (401k match up to 4%)
flexible PTO

Fulltime

New

Senior/Staff Full Stack Engineer

Signify have partnered with a company that are looking for a Senior/Staff Full S...

Location

Portugal , Lisbon

Salary:

65000.00 - 75000.00 EUR / Year

Signify Technology

Expiration Date

Until further notice

Requirements

10+ years as a software engineer
Hands on experience with both Python and Typescript
Strong understanding of system architecture, design patterns, and technical trade offs
Experience designing and working with relational databases and data modeling principles
Good knowledge of Kuberenetes and AWS
Experience working within Agile or Kanban development methodologies
Coaching and mentoring experience

Job Responsibility

Design, develop, and maintain robust web applications using TypeScript (frontend) and Python (backend)
Lead and contribute to architectural discussions, technical design sessions, and system reviews
Translate business requirements into scalable, secure, and maintainable technical solutions
Mentor and support junior engineers, fostering strong development standards and best practices
Actively engage in Agile ceremonies including daily stand-ups and sprint planning
Participate in peer code reviews to ensure code quality, performance, and reliability
Contribute to continuous improvement of SDLC processes and deployment workflows

Fulltime

Senior/Staff Full Stack Engineer

Our Mission: Hospital-Quality Care, Everywhere. The healthcare industry still re...

Location

United States , San Francisco

Salary:

150000.00 - 220000.00 USD / Year

Helpcare AI

Expiration Date

Until further notice

Requirements

At least 4 years experience building, shipping, and maintaining full-stack applications in a production environment
Advanced degree in Computer Science or other relevant technical focuses
Proficiency in building applications with both backend (e.g., Python, TypeScript/JavaScript) and frontend (e.g., React, Vue) technologies
A strong command of SQL and experience designing and querying relational databases (e.g., PostgreSQL, MySQL)
The ability to articulate complex technical concepts clearly to both technical and non-technical audiences

Job Responsibility

Build software for hospitals and patients that will make their lives easier
Find creative solutions to complex technical and product problems
Build prototypes fast, but with a path in mind to turn them into robust systems over time
Operate with a lot of independence and responsibility in solving complex issues
Work with relevant stakeholders outside of engineering to figure out the right solutions to issues

What we offer

We cover 100% of your health insurance premium
Provide access to high-quality dental and vision insurance plans for you and your dependents
We offer a 401(k) plan to help you save for your future
Opportunities for rapid career advancement
Equity

Fulltime

Senior/Staff Software Consultant - Golang/C++

We are seeking a highly skilled Backend Engineer with strong expertise in real-t...

Location

Pakistan , Lahore; Karachi; Islamabad

Salary:

Not provided

10Pearls

Expiration Date

Until further notice

Requirements

5+ years of hands-on backend development experience using Go and/or C++
Strong expertise in real-time media streaming, including one or more of the following: RTP / SRTP
WebRTC (MUST-HAVE)
WebRTC SFU implementation
Deep understanding of video/audio processing, with experience using FFmpeg, GStreamer, or similar frameworks
Understanding of networking concepts, including TCP, UDP, ICE, STUN/TURN, and WebSockets
Strong understanding of concurrency, asynchronous programming, and performance tuning
Experience building and consuming RESTful and WebSocket APIs
Hands-on experience with message queues such as Kafka, NATS, or RabbitMQ
Experience working with cloud platforms (AWS, GCP, Azure)

Job Responsibility

Design, develop, and maintain high-performance backend services using Go or C++
Build and optimize real-time microservices that support low-latency communication across a distributed architecture
Develop and enhance WebSocket, REST, and real-time APIs used by client-facing applications
Work extensively with media streaming technologies, including RTP, SRTP, WebRTC, and related protocols
Implement and optimize WebRTC SFUs (Selective Forwarding Units) for scalable audio/video streaming
Integrate and optimize media workflows using tools and libraries such as FFmpeg and GStreamer
Work with databases such as MySQL, Redis, MongoDB, and design efficient data models for real-time workloads
Ensure backend services meet high standards of security, reliability, and performance using modern DevOps and SRE practices
Collaborate closely with Frontend, DevOps, and Product teams to deliver end-to-end features
Write clean, well-documented, and maintainable code following best engineering practices

Senior/Staff Software Consultant - Golang/C++

We are seeking a highly skilled Backend Engineer with strong expertise in real-t...

Location

Pakistan , Lahore, Karachi, Islamabad

Salary:

Not provided

10Pearls

Expiration Date

Until further notice

Requirements

5+ years of hands-on backend development experience using Go and/or C++
Strong expertise in real-time media streaming, including one or more of the following: RTP / SRTP
WebRTC (MUST-HAVE)
WebRTC SFU implementation
Deep understanding of video/audio processing, with experience using FFmpeg, GStreamer, or similar frameworks
Understanding of networking concepts, including TCP, UDP, ICE, STUN/TURN, and WebSockets
Strong understanding of concurrency, asynchronous programming, and performance tuning
Experience building and consuming RESTful and WebSocket APIs
Hands-on experience with message queues such as Kafka, NATS, or RabbitMQ
Experience working with cloud platforms (AWS, GCP, Azure)

Job Responsibility

Design, develop, and maintain high-performance backend services using Go or C++
Build and optimize real-time microservices that support low-latency communication across a distributed architecture
Develop and enhance WebSocket, REST, and real-time APIs used by client-facing applications
Work extensively with media streaming technologies, including RTP, SRTP, WebRTC, and related protocols
Implement and optimize WebRTC SFUs (Selective Forwarding Units) for scalable audio/video streaming
Integrate and optimize media workflows using tools and libraries such as FFmpeg and GStreamer
Work with databases such as MySQL, Redis, MongoDB, and design efficient data models for real-time workloads
Ensure backend services meet high standards of security, reliability, and performance using modern DevOps and SRE practices
Collaborate closely with Frontend, DevOps, and Product teams to deliver end-to-end features
Write clean, well-documented, and maintainable code following best engineering practices

New

Senior Product Manager

Location

Salary:

Not provided

Luna

Expiration Date

Until further notice

Requirements

4+ years of experience in Product Management
Previous experience in Engineering or Customer Success Management
Experience building platform services and Web applications
Experience building Web applications in support of business operations workflows or use cases
Comfortable with occasional travel to internal users and teams for planning, research, and testing purposes
Experience working in the health tech industry
Authorized to work in the US without restriction

Fulltime

Senior/Staff Frontend Engineer

Klaxoon

Location:
Czech Republic , Prague

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
February 18, 2026

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Senior/Staff Frontend Engineer

Klaxoon

Location:Czech Republic , Prague

Category:IT - Software Development

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Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:February 18, 2026

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Location:
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Category:
IT - Software Development

Contract Type:
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Job Posted:
February 18, 2026