Senior Software Engineer, Fullstack

Vistar Media is the home of out-of-home (OOH). As a global ad tech company and the world's largest digital out-of-home (DOOH) advertising marketplace, we offer technology designed to make buying and selling OOH media easier. Our goal is simple: to help the world's marketers leverage OOH's unique ability to motivate and delight.

From strategic partnerships with major media owner networks to executing impactful campaigns with renowned global brands such as Nestlé, Porsche, Target, and Levi's, our team is filled with passionate, innovative, and collaborative problem solvers, engaging and entertaining consumers like you in the real world. Find your home in out-of-home - find your people at Vistar.

As of January 2025, Vistar Media was acquired by T-Mobile and is now part of T-Mobile Advertising Solutions. By combining our DOOH expertise with T-Mobile’s unique customer insights and expansive omnichannel capabilities, we’re creating new opportunities to innovate at scale and make a meaningful impact on the future of out-of-home media.

About The Role

We're looking for a Fullstack Senior Software Engineer to significantly impact our core business on the programmatic marketplace. The marketplace engineering team develops intricate platforms that facilitate the buying and selling of out-of-home (OOH) media. Our work encompasses a transactional marketplace, for both advertisers seeking to connect with target demographics, and media owners managing their extensive digital screen networks.

In this role, you're instrumental in designing and developing robust, full-stack solutions for our advertising partners and media owner networks. You'll take ownership of projects from concept to deployment and deliver high-quality features by leveraging Python APIs and modern web frameworks. You'll work autonomously, while also collaborating closely with Product Managers, QA, and other engineers, to define, scope, and execute solutions that drives the heart of our business. You’ll also participate in rigorous code review process, mentoring junior engineers and aligning our code base on industry best practices.

What You'll Do

• Work collaboratively on a dynamic team to deliver solutions to complex problems.
• Write clean, maintainable, and testable code for high-reliability distributed systems.
• Interface with product managers to align technical solutions on product requirements.
• Daily design, development and debugging of local and remote systems.
• Participate in code reviews and knowledge sharing.
• Take ownership of complex projects and deliver solutions with unclear or incomplete requirements; drive them forward to fill the gaps.
• Design scalable solutions in the ad tech space focused on the APIs and UIs that support our advertising and media owner clients.
• You will split your time between scoping projects, assisting with architecture decisions, and hands-on development.
  
  

What Experience We're Looking For

• 6-12+ years of experience in software development.
• Experience with true full stack—from the database to CSS.
• Expertise in Python, TypeScript, and React.
• Experience with GoLang, Flask APIs, and AWS is a plus.
• Experience with a formal code review process is a plus.
• Experience with developing complex software systems with production quality deployment, monitoring and reliability, including providing off-hours on-call support.
• Experience decomposing complex business requirements into a working solution.
• Experience in ad tech is a plus.
  
  

What We Offer

• Competitive salary
• 25 Paid Vacation Days, and an extra day if you haven’t been sick the previous year!
• Comprehensive Pension Scheme
• Commuting allowance (NS Business card or Swapfiets subscription)
• Quarterly up to €250 in Lifestyle Stipend
• Daily lunches, snacks and drinks in our Amsterdam office
• Global Employee Exchange Program
• Continuous Learning Opportunities
• Global team bonding events
• Friday sharing-knowledge sessions follow up by drinks at the office or on our sunny terrace!
• Spacious and modern office only 10 minutes cycling from the Amsterdam Centraal
  
  

Recruiting fraud is a serious issue facing jobseekers. Please be aware that Vistar Media would never require personal information (such as bank account information) during the interview process. Should an employee from Vistar Media reach out to you, that communication will come from an @vistarmedia.com email address. During a typical interview process, you will have several phone, video, and/or in-person interviews with multiple Vistar Media employees before a hiring decision is made. We do not require payment from applicants for training or other costs incurred, nor do we offer compensation before hiring.

If you’re ambitious, highly driven, and interested in making an impact, Vistar is the place for you. Apply to join our team… we’ll see you out there.