Senior Full-Stack Developer Job at Kantar (Groningen)

Senior Full-stack Engineer, Product Partnerships

Braze's open and flexible customer engagement platform is designed to seamlessly...

Location

United States , New York City

Salary:

154800.00 - 275400.00 USD / Year

Braze

Expiration Date

Until further notice

Requirements

6+ years of full-stack development experience
Strong understanding of design, data structures, and algorithms
Excellent communication and organizational skills
Proven track record of tackling ambiguous and complex problems
Professional experience in Ruby, Ruby on Rails, React, SQL, and NoSQL databases, distributed systems, API design/monitoring/best practices
Professional experience building software at scale
Experience with agile processes

Job Responsibility

Take ownership of large-scale projects, from expanding our e-commerce offerings to optimizing the performance and resiliency of our complex backend systems that power integrations like Shopify
Be a driving force behind our most critical initiatives
Shape the future of our integration platform
Design and code high-impact, foundational features
Contribute to the team's technical and product strategy
Lead by example, mentoring other engineers and ensuring the work of the team is maximally effective

What we offer

Competitive compensation that may include equity
Retirement and Employee Stock Purchase Plans
Flexible paid time off
Comprehensive benefit plans covering medical, dental, vision, life, and disability
Family services that include fertility benefits and equal paid parental leave
Professional development supported by formal career pathing, learning platforms, and a yearly learning stipend
A curated in-office employee experience, designed to foster community, team connections, and innovation
Opportunities to give back to your community, including an annual company-wide Volunteer Week and donation matching
Employee Resource Groups that provide supportive communities within Braze

Senior Full-Stack Engineer (Python + React)

We are looking for an experienced Senior Full-Stack Engineer (Python + React) to...

Location

Ukraine

Salary:

Not provided

Binariks

Expiration Date

Until further notice

Requirements

5+ years of experience with Python, Django, and Django REST Framework
Solid knowledge of React
Experience building and maintaining microservices-based architecture
Experience working with Microsoft Azure
Experience with MS SQL
Experience or strong interest in Agentic Frameworks, specifically BMAD Method (v6)
Experience working in the healthcare domain
English Upper-Intermediate or higher
Strong collaboration and communication skills
Technology-oriented mindset with the ability to proactively suggest solutions and contribute to technical decisions

Job Responsibility

Design, develop, and maintain backend services using Python, Django, and Django REST
Implement and support microservices-based solutions
Contribute to frontend development using React where needed
Work with MS SQL database, ensuring efficient data access and well-structured schemas
Collaborate closely with product managers, business analysts, and engineers to clarify requirements and propose technical solutions
Write clean, maintainable, and well-tested code
Participate in code reviews and contribute to architectural discussions
Take initiative in improving code quality, system design, and development practices

What we offer

18 days of paid annual leave
10 sick leaves
Additional days off for special occasions
Medical Care
Health check-up
English Class
Play Room
IT Cluster membership
Business Trip
Tech Talks

Senior Full-Stack Engineer (Python + React)

We are looking for an experienced Senior Full-Stack Engineer (Python + React) to...

Location

Ukraine

Salary:

Not provided

Binariks

Expiration Date

Until further notice

Requirements

5+ years of experience with Python, Django, and Django REST Framework
Solid knowledge of React
Experience building and maintaining microservices-based architecture
Experience working with Microsoft Azure
Experience with MS SQL
Experience or strong interest in Agentic Frameworks, specifically BMAD Method (v6)
Experience working in the healthcare domain
English Upper-Intermediate or higher
Strong collaboration and communication skills
Technology-oriented mindset with the ability to proactively suggest solutions and contribute to technical decisions

Job Responsibility

Design, develop, and maintain backend services using Python, Django, and Django REST
Implement and support microservices-based solutions
Contribute to frontend development using React where needed
Work with MS SQL database, ensuring efficient data access and well-structured schemas
Collaborate closely with product managers, business analysts, and engineers to clarify requirements and propose technical solutions
Write clean, maintainable, and well-tested code
Participate in code reviews and contribute to architectural discussions
Take initiative in improving code quality, system design, and development practices

What we offer

18 days of paid annual leave
10 sick leaves
Additional days off for special occasions
Medical Care
Health check-up
English Class
Play Room
IT Cluster membership
Business Trip
Tech Talks

Senior Full-Stack Engineer

We are hiring for a senior full-stack engineer to work on our Aiven Console. The...

Location

Finland , Helsinki

Salary:

Not provided

Aiven Deutschland GmbH

Expiration Date

Until further notice

Requirements

Experience planning and leading the implementation of a feature
Experience building web-facing applications end-to-end, including everything between the browser and the database
Proficiency in TypeScript and experience in Python, or proven ability to learn new programming languages
Experience working with relational databases
Fluent communication skills in English, written and verbal

Job Responsibility

Creating completely new platform-wide capabilities or extending existing ones, for example improving our service creation flow
Designing and implementing new RESTful APIs or improving the performance and capabilities of existing ones
Working on our in-house design system that empowers our Console development
Making sure our technical foundation stays in shape by highlighting needed technical improvements

What we offer

Participate in Aiven’s equity plan
Hybrid work policy
Get the equipment you need to set yourself up for success
Real employer support (use one of our learning platforms, annual learning budget, and more)
Holistic wellbeing support through our global Employee Assistance Program
Get paid for contributing to open source projects (Plankton program)
Use up to 5 days per year to volunteer for a good cause of your choice
Join one of our team member resource groups
Extensive Occupational Health Care, Dental Care, as well as sports, culture, massage and lunch benefits
Regular office breakfast

Fulltime

Senior Full Stack Engineer

We are looking for a highly skilled Senior Full Stack Engineer to join our growi...

Location

India , Ahmedabad

Salary:

Not provided

Tech Holding

Expiration Date

Until further notice

Requirements

Bachelor's or Master's degree in Computer Science, Information Technology, or a related field
Minimum 4+ years of professional experience in software development
2+ years of experience with Node.js, React, Ruby, Python, or similar languages
2+ years of experience with PostgreSQL or MySQL
Strong understanding of MVC architecture and design patterns
Proficient in JavaScript, CSS, HTML
Fluent in SQL scripting and database optimization
Hands-on experience with AWS/GCP/Azure Cloud
Strong knowledge of Linux/Unix systems and networking protocols
Experience writing Unix Shell scripts and automation tasks

Job Responsibility

Design, develop, and maintain full-stack web applications using modern frameworks and technologies
Implement scalable and maintainable solutions following MVC design patterns
Work on both front-end and back-end development using JavaScript, Node.js, React, Ruby, Python, or similar languages
Develop and optimize SQL queries and manage databases such as PostgreSQL or MySQL
Build responsive and dynamic interfaces using HTML, CSS, JavaScript Frameworks
Leverage AWS/GCP/Azure cloud services for deployment and scaling
Write unit tests and ensure code quality through reviews and continuous integration
Maintain and enhance existing systems, troubleshoot issues, and improve performance
Utilize Unix/Linux environments, scripting in Shell and SQL for automation and system management
Collaborate with product owners, designers, and engineers to deliver high-quality features on time

What we offer

A culture that values flexibility, work-life balance, and employee well-being - including Work From Home Fridays
Competitive compensation packages and comprehensive health benefits
Work with a collaborative, global team of engineers who thrive on solving complex challenges
Exposure to multi-cloud environments (AWS, GCP, Azure) and modern DevOps tooling at scale
Professional growth through continuous learning, mentorship, and access to new technologies
Leadership that recognizes contributions and supports career advancement
The chance to shape DevOps best practices and directly influence company-wide engineering culture
A people-first environment where your ideas matter and innovation is encouraged

Fulltime

Senior Full Stack React/Node.js Engineer

Our customer is an innovative company that utilizes state-of-the-art technology ...

Location

Salary:

Not provided

Softermii

Expiration Date

Until further notice

Requirements

5+ years’ full-stack development experience with Node.js and React
Strong knowledge of microservices, REST APIs, and cloud platforms (AWS preferred)
Familiarity with Docker, Kubernetes, and CI/CD pipelines
Excellent verbal and written communication skills in English, including communication with executives, developers, and product managers
Hands-on problem solver with strong ownership and a collaborative mindset
Able to work according to the Austin, Texas time zone(UTC−06:00, Central Time (CT)

Job Responsibility

Build and maintain scalable full-stack applications with Node.js and React
Design microservices and cloud-based architectures (AWS)
Partner with product and design to align tech solutions with user needs
Review code, mentor junior developers, and raise engineering standards
Troubleshoot and optimize performance in production environments
Stay ahead of industry trends to keep our stack modern and effective

What we offer

Cover 50% of the cost of our internal English courses, as well as external professional courses, webinars, conferences
Individual development plan
Mentoring from our seniors and leaders
Referral bonus
21 paid vacation days
11 paid days off for Public Holidays
5 paid sick leave days per year
Volunteer support
Flexible working day

Fulltime

Senior Full-Stack JavaScript Engineer

We are looking for passionate people who enjoy working in a team-oriented enviro...

Location

United States

Salary:

Not provided

SitePen

Expiration Date

Until further notice

Requirements

Senior full stack engineer with at least 10 years of full-time experience
Very experienced in delivering Enterprise Software (SaaS, IaaS, etc.)
Effective communicator with Product and Business teams
Able to provide examples of scalable, performant code
Confident in preferred architectures and tools
Committed to code quality, ownership & accountability
Passionate about the web platform
Interested in learning new technologies, standards, and techniques
Self-disciplined, able to work and communicate effectively in a fully remote environment
Able to lead and delegate when needed

Job Responsibility

Write new web applications for our customers
Provide upgrades and fixes to our customers' existing apps
Provide technical assistance and support for our customers' development teams
Participate in coaching, training, and leveling up other developers
Contribute patches and enhancements to many open source projects
Enjoy a refreshing work-life balance

Fulltime

Senior Full-stack Engineer

A European tech-led payments organisation. They operate across several EU locati...

Location

European Union

Salary:

Not provided

Signify Technology

Expiration Date

Until further notice

Requirements

6+ years of full-stack engineering experience
Strong knowledge of TypeScript, Node.js, and at least 2 years with Vue.js (or React/Angular)
Solid understanding of microservices, PostgreSQL, and NoSQL databases
Hands-on experience with GCP, Kubernetes, and containerised deployments
Proficiency in modern frontend development (HTML5, CSS3, state management tools, optimisation)
Experience with CI/CD practices and testing frameworks (Jest, Cypress)
Strong communication skills and ability to mentor others

Job Responsibility

Design, build, and maintain fullstack solutions using TypeScript, Node.js, and Vue.js (or similar frameworks)
Develop and scale microservices with a focus on performance, reliability, and maintainability
Build and optimise user-facing applications following modern frontend best practices
Implement Infrastructure as Code (Terraform or Pulumi) and support scalable deployment workflows
Manage cloud infrastructure (GCP preferred), including Kubernetes-based environments
Create and maintain CI/CD pipelines (CircleCI, GitHub Actions, ArgoCD)
Monitor, debug, and improve system performance using modern observability tools
Collaborate with designers, product teams, and engineers to deliver cohesive solutions

Senior Full-Stack Developer

Kantar

Location:
Netherlands , Groningen

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
January 21, 2026

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