Senior/Staff Backend Engineer Job at Klaxoon (Prague)

Senior/Staff Java Backend Engineer

Join the Lab Automation Project and help build the core backend services and UIs...

Location

Mexico , Guadalajara

Salary:

Not provided

Zoolatech

Expiration Date

Until further notice

Requirements

7+ years of experience working in backend software development roles
Experience with Java, Spring, and Spring Boot
Experience in a micro service environment
Experience with Kubernetes and Docker
Experience with AWS Data Stores (RDS, Elastic Cache, MQ, S3)
Experience with CI/CD ( Jenkins, ArgoCD, Github actions )
Experience with Agile methodologies and tools ( Jira, Sprints, etc.. )
Mindset of fulfilling the dreams of the Product, Design and the end user.
Communicate conscientiously with your work colleagues

Job Responsibility

Design, Build, and Test Java Spring Boot backend services built with micro architecture principles
Design, Build and Test data stores in AWS used by the backend services ( Postgres, Redis, MQ, Kafka, etc.. ) as well as the data layers which directly interact with the data stores.
Design, Build, and Test inter service communication mechanisms (Message Buses, SDK’s, and APIs)
Create and Modify Backend Services running within a Kubernetes Cluster. Adjust the cluster’s ingress points, namespaces, config maps, and operators as necessary to optimize platform performance, security, and efficiency
Accurately Estimate and Track large projects
Provide constructive feedback in code reviews and incorporate feedback received
Create architecture design documents and clearly present ideas to the team
Create and maintain documentation for backend services including APIs, system architecture, etc.
Operate in the local developer environment, (Docker/Gradle/IDE )
Operate within an Agile environment (Sprints, Jira)

What we offer

Paid Vacation
Holidays Day Off
Sick Days
Bereavement Leave
Sport Compensation
English Classes
Food Vouchers
Training Compensation
Maternity and Paternity Leave
Savings Fund

Senior/Staff Java Backend Engineer

Join the Lab Automation Project and help build the core backend services and UIs...

Location

Salary:

Not provided

Zoolatech

Expiration Date

Until further notice

Requirements

7+ years of experience working in backend software development roles
Experience with Java, Spring, and Spring Boot
Experience in a micro service environment
Experience with Kubernetes and Docker
Experience with AWS Data Stores (RDS, Elastic Cache, MQ, S3)
Experience with CI/CD ( Jenkins, ArgoCD, Github actions )
Experience with Agile methodologies and tools ( Jira, Sprints, etc.. )
Mindset of fulfilling the dreams of the Product, Design and the end user
Communicate conscientiously with your work colleagues

Job Responsibility

Design, Build, and Test Java Spring Boot backend services built with micro architecture principles
Design, Build and Test data stores in AWS used by the backend services ( Postgres, Redis, MQ, Kafka, etc.. ) as well as the data layers which directly interact with the data stores
Design, Build, and Test inter service communication mechanisms (Message Buses, SDK’s, and APIs)
Create and Modify Backend Services running within a Kubernetes Cluster. Adjust the cluster’s ingress points, namespaces, config maps, and operators as necessary to optimize platform performance, security, and efficiency
Accurately Estimate and Track large projects
Provide constructive feedback in code reviews and incorporate feedback received
Create architecture design documents and clearly present ideas to the team
Create and maintain documentation for backend services including APIs, system architecture, etc.
Operate in the local developer environment, (Docker/Gradle/IDE)
Operate within an Agile environment (Sprints, Jira)

What we offer

Paid Vacation
Sick Days
Floating Holidays
Sport/Insurance Compensation
English Classes
Charity
Training Compensation

Senior/Staff Data Engineer

As a senior data engineer you will work on complex data pipelines dealing with p...

Location

Salary:

Not provided

Balbix

Expiration Date

Until further notice

Requirements

MS/BS +3 years in Computer Science or a related field
Expert programming experience with Python, Java, or Scala
Good working knowledge of SQL databases such as Postgres and NoSQL databases such as MongoDB, Cassandra, Redis
Experience with search engine database such as ElasticSearch is preferred
Time-series databases such as InfluxDB, Druid, Prometheus
Strong computer science fundamentals: data structures, algorithms, and distributed systems

Job Responsibility

Design and implement the features and own the modules for ingesting, storing and manipulating large data sets for a variety of cybersecurity use-cases
Write code to provide backend support for data-driven UI widgets, web dashboards, workflows, search and API connectors
Design and implement web services, rest APIs, and microservices
Build production quality solutions that balance complexity and meet acceptance criteria of functional requirements
Work with multiple-interfacing teams, including ML, UI, backend and data engineering

Fulltime

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 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 Backend 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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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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Job Posted:
February 18, 2026