Senior Full- stack Developer (Olympus)

Vonage Engineering Mission:
Vonage is the emerging leader in the $100B+ cloud communications platform (CPaaS) market. Customers like Airbnb, Viber, Whatsapp, Snapchat, and many others depend on our APIs and SDKs to connect with their customers all over the world.

As businesses continue to shift to a real-time, customer-centric communications model, we are experiencing a time of impressive growth.

Why this role matters: The Engineering team at Vonage is a fast growing group of talented engineers. They face multiple challenges associated with high performance, distributed systems, and processing large volumes of data in real time.

The Vonage Messages API team is looking at expanding its size, in order to accelerate our platform development to support our growing customer base with a particular focus on customer interaction adding rich UI components and workflows to support the customer journey through our APIs. This role will require working across teams using a micro-frontend framework to add user interfaces to bridge the gap between the backend APIs and the frontend interface.

Our Engineers work on an exciting mix of both greenfield and existing projects, giving them an opportunity to explore new technologies.

What you will do

  • Create scalable microservices that will help support our impressive growth
  • Develop high-quality, performant, and scalable web components using the Fast Framework 
  • Collaborate closely with the design team to transform wireframes, mockups, and visual designs into interactive and responsive web components
  • Identify and address performance bottlenecks, usability issues, and cross-browser compatibility challenges to deliver highly polished and robust web components
  • Develop and execute effective testing strategies, including unit tests, integration tests, and end-to-end tests, to ensure software quality and reliability
  • Stay up-to-date with industry trends, best practices, and emerging frontend technologies, and share knowledge and expertise with the development team to continuously improve our development processes and standards
  • Participate in code reviews, provide constructive feedback to peers, and actively contribute to maintaining a high standard of code quality and development practices
  • Contribute to the documentation of the components, design patterns, and the design system to facilitate knowledge sharing and onboarding of new team members


What you will bring:

  • Excellent software engineering skills in Java or Kotlin for backend services
  • Proficiency in HTML, CSS, JavaScript/TypeScript, and related frontend technologies
  • Solid understanding and practical experience with frontend frameworks/libraries (e.g., React, Angular, Vue.js)
  • Strong understanding of responsive web design principles, cross-browser compatibility, and accessibility standards (e.g., WCAG)
  • Work closely with cross-functional teams such as Development, Operations, and Product Management to ensure seamless integration of new features and services with a focus on reliability, scalability, and performance
  • A strong focus on testing
  • An understanding of Object Oriented Design and standard design patterns.
  • Experience of multi-threaded, 3-tier architectures, web services and caching
  • Experience dealing with event-driven pipelines
  • Willingness to learn and use different technologies/programming languages
  • Experience working with public cloud. AWS would be advantageous
  • Experience with SQL and NoSQL databases
  • Practical experience of deploying code in a modern programming environment using tools such as Docker and Kubernetes

Our Stack

  • Microservices architecture
  • Java and Kotlin with Spring Boot Reactive
  • Vue.js and Fast Framework 
  • AWS (Lambda, SQS, S3, DynamoDB)
  • Kafka
  • Docker, Kubernetes
  • Grafana, Prometheus, ELK stack
  • Anything needed to achieve our goals


Please note: This position is offered on an employee contract. If you are based close to Wroclaw you can visit our office, if not we offer remote work as well. Unfortunately we do not offer B2B contracts.

We encourage you to apply, even if you don’t meet all of the requirements. We value your growth potential and enthusiasm!



Apply for this Job

* Required

resume chosen  
(File types: pdf, doc, docx, txt, rtf)

Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in Vonage’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.

Voluntary Self-Identification of Disability

Form CC-305
Page 1 of 1
OMB Control Number 1250-0005
Expires 04/30/2026

Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to learn more about the law or this form, visit the U.S. Department of Labor’s Office of Federal Contract Compliance Programs (OFCCP) website at

How do you know if you have a disability?

A disability is a condition that substantially limits one or more of your “major life activities.” If you have or have ever had such a condition, you are a person with a disability. Disabilities include, but are not limited to:

  • Alcohol or other substance use disorder (not currently using drugs illegally)
  • Autoimmune disorder, for example, lupus, fibromyalgia, rheumatoid arthritis, HIV/AIDS
  • Blind or low vision
  • Cancer (past or present)
  • Cardiovascular or heart disease
  • Celiac disease
  • Cerebral palsy
  • Deaf or serious difficulty hearing
  • Diabetes
  • Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders
  • Epilepsy or other seizure disorder
  • Gastrointestinal disorders, for example, Crohn's Disease, irritable bowel syndrome
  • Intellectual or developmental disability
  • Mental health conditions, for example, depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD
  • Missing limbs or partially missing limbs
  • Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s) and/or other supports
  • Nervous system condition, for example, migraine headaches, Parkinson’s disease, multiple sclerosis (MS)
  • Neurodivergence, for example, attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities
  • Partial or complete paralysis (any cause)
  • Pulmonary or respiratory conditions, for example, tuberculosis, asthma, emphysema
  • Short stature (dwarfism)
  • Traumatic brain injury

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.

Enter the verification code sent to to confirm you are not a robot, then submit your application.

This application was flagged as potential bot traffic. To resubmit your application, turn off any VPNs, clear the browser's cache and cookies, or try another browser. If you still can't submit it, contact our support team through the help center.