Senior Fullstack Developer, Ad Formats

Readpeak; Helsinki; On-site; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Trips and team events

Free lunch weekly

Stock options

Healthcare package in Helsinki

Job summary

Readpeak is seeking a Senior Fullstack Developer to own end-to-end media format services for our programmatic marketing platform. You will write code, collaborate with stakeholders, and ship low-latency services with AI-enabled development.

You will work with a team of engineers and product people to iterate on the product with real traffic, building scalable solutions for advertising tech in Helsinki-based offices.

Qualifications

• Strong software engineering fundamentals and production systems experience.
• Experience taking fullstack products from idea to production ownership.
• Solid understanding of media formats including video and embedded web content.
• Experience with AWS services (ECS/EKS, RDS, SQS, CDK, MediaConvert, CloudFront).
• 4+ years of professional software engineering experience.

Responsibilities

• Design, build, and maintain media services from ingestion through APIs to production deployment.
• Ensure service security, monitoring, and observability in production.
• Utilize AI development tools as part of daily workflow.
• Collaborate with engineers, product, and data scientists to improve back-end systems.
• Ideate next generations of ad products and formats.
• Design systems to handle noisy real-world data.

Skills

Node.js/TypeScript

Production systems

AI-enabled development

Structured data

Fullstack ownership

Media formats knowledge

AWS experience

Python

Tools

AWS

GitLab

CloudFront

Python

Job description

Are you an engineer who enjoys building new concepts that drive business value? Do you have what it takes to build services that run at large scale in production? At Readpeak, we're looking for a Senior Fullstack Developer to develop and own end-to-end media format services for our programmatic marketing platform, where your work directly affects advertiser outcomes and company revenue.

About the Role

We're looking for someone with a strong software development background who enjoys the engineering side of building production systems. This is a hands-on role, with a productization twist: writing code, collaborating with stakeholders, building necessary services, validating, monitoring, and continuous improvement. You'll work alongside other engineers and product people, iterating on the product with real traffic.

You should be comfortable working with structured data and building low-latency services that turn data into value. And naturally, our development team uses the latest AI tools, experience with AI-enabled development is essential.

Responsibilities

• Design, build, and maintain media services from ingestion through APIs to production deployment
• Ensure service security, monitoring, and observability in production
• We expect you to be comfortable working with modern AI development tools and to use them well as part of your everyday workflow.
• Collaborate with engineers, PO, and data scientists, and help raise the bar for how back-end systems are built and operated in production
• Ideate the next generations of ad products and formats
• Design systems that can handle noisy and skewed real-world data

Qualifications

• Computer science fundamentals, software engineering best practices and strong programming skills (Node.js/TypeScript or a similar language, Rust as bonus, with experience running production systems)
• Experience taking fullstack products from idea to production ownership, including monitoring, iteration, and long-term maintenance
• Solid understanding of media formats including video and web content embedding into different user interfaces - apps, news websites, e-commerce stores
• Strong experience with AWS (ECS/EKS, RDS, SQS, CDK, MediaConvert, CloudFront), comfortable helping out on the infra side when operating at scale
• 4+ years of professional experience in software engineering

Required Skills

• Strong programming skills in Node.js/TypeScript or a similar language
• Experience running production systems
• Experience with AI-enabled development and modern AI development tools
• Comfortable working with structured data and building low-latency services
• Experience taking fullstack products from idea to production ownership
• Solid understanding of media formats including video and web content embedding into different user interfaces \- apps, news websites, e-commerce stores
• Strong experience with AWS (ECS/EKS, RDS, SQS, CDK, MediaConvert, CloudFront)
• Experience with video formats (AVC, VC1, HEVC) - transcoding, editing with AWS, scalable and performant content delivery, web and native streaming players

Preferred Skills

• Experience in ad tech
• Experience with real-time or low-latency back-end systems
• Experience with Python
• Experience with GitLab

Comp Package

• 1-2 company trips per year with the whole team (we just came back from Italy)
• Free lunch every Wednesday
• Stock options are available, so you'll benefit from the success you help build
• We have an extensive healthcare package for team members working from Helsinki

Additional Information

• This role is Helsinki-based and you should live in the Helsinki capital region or nearby
• We are very relaxed and easy-going, yet focused and hard-working
• As part of the journey, we create great memories with the team that you will never forget

Stack you will be working with

• Node.js/TypeScript
• AWS (core infrastructure)
• Python
• GitLab
• CloudFront

About the company

Readpeak is one of the most advanced programmatic marketing platforms for native advertising globally. We serve some of the finest brands, like BMW, Bosch, Eurocard and over 2000 more in our target markets. With our headquarters in Helsinki and offices in Stockholm, Oslo, Copenhagen, Berlin, Paris, the UK and Switzerland, the Netherlands, Italy and New York, our team consists of ambitious but relaxed international industry experts.

With over 8 billion ads served a year in the Nordics alone and a growth rate over 50% year-over-year, our platform generates massive datasets and complex engineering challenges. We are searching for an engineer capable of developing new, innovative concepts for products that drive more intelligent and high-performing advertising solutions.

Our back-end systems are a core component of our product vision. They directly influence how ads are delivered, how budgets are allocated, and how performance is optimized across billions of impressions. This is complemented by user-friendly interfaces enabling customers to self-serve their marketing needs.

We work with fast feedback loops: from idea to validation often takes days, not weeks. Services and system changes can be safely tested against real traffic with a low barrier to experimentation, enabling rapid iteration and measurable impact.

This position is for direct candidates only.