Senior Engineer (Node.js) – AdTech / RTB

Braver IT; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Remote work

Healthcare

Multisport

Small senior team

AI tools access

Architectural influence

Job summary

Braver IT is hiring for a senior backend engineer to join a Finnish AdTech client and build real-time, high-throughput backend services in Node.js and TypeScript. You’ll influence architecture, performance and technical direction in a small, senior team.

You’ll own RTB pipelines, optimize latency, and design scalable APIs for large volumes of concurrent requests, with emphasis on production-grade systems and data-driven decisions.

Qualifications

• Strong commercial experience with Node.js and TypeScript.
• Experience building high-throughput, low-latency backend systems.
• Good understanding of distributed systems, scalability and performance optimization.
• Experience designing and maintaining production-grade APIs and backend services.
• Ability to make independent technical decisions and take ownership of solutions.
• Fluent English.
• Experience with RTB / programmatic advertising.
• Knowledge of OpenRTB 2.5 / 2.6.
• Experience with IAB standards and ad formats.
• Background in DSP, SSP, ad exchanges or Prebid.
• Experience with event-driven architectures, caching and performance-sensitive systems.

Responsibilities

• Build and scale high-throughput, low-latency backend services using Node.js and TypeScript.
• Work on real-time bidding flows, integrations and performance-critical backend components.
• Design solutions for systems processing large volumes of concurrent requests.
• Optimize latency, throughput, reliability and resource usage.
• Take ownership of technical and architectural decisions.
• Work closely with experienced engineers on production systems where performance matters.
• Investigate bottlenecks, production issues and opportunities for further optimization.

Skills

Node.js

TypeScript

Low-latency systems

Distributed systems

API design

Ownership

English

RTB / programmatic advertising

OpenRTB 2.5/2.6

IAB standards

DSP/SSP/Prebid

Event-driven architectures

Caching

Performance optimization

Job description

You’ll work on backend systems where milliseconds directly impact business results.

Our client is a Finnish AdTech company building a programmatic advertising platform that processes real-time auctions and makes ad-serving decisions in milliseconds.

You’ll join a small, senior engineering team with direct influence on architecture, performance and technical direction.

Requirements description

• Strong commercial experience with Node.js and TypeScript
• Experience building high-throughput, low-latency backend systems
• Good understanding of distributed systems, scalability and performance optimization
• Experience designing and maintaining production-grade APIs and backend services
• Ability to make independent technical decisions and take ownership of solutions
• Fluent English
• Experience with RTB / programmatic advertising
• Knowledge of OpenRTB 2.5 / 2.6
• Experience with IAB standards and ad formats
• Background in DSP, SSP, ad exchanges or Prebid
• Experience with event-driven architectures, caching and performance-sensitive systems

No AdTech background? That’s not a blocker.

If you already have strong experience with performance-critical backend systems, high request volumes and low-latency architectures, the team can help you build the domain knowledge around RTB and programmatic advertising.

Your responsibilities

• Build and scale high-throughput, low-latency backend services using Node.js and TypeScript
• Work on real-time bidding flows, integrations and performance-critical backend components
• Design solutions for systems processing large volumes of concurrent requests
• Optimize latency, throughput, reliability and resource usage
• Take ownership of technical and architectural decisions
• Work closely with experienced engineers on production systems where performance matters
• Investigate bottlenecks, production issues and opportunities for further optimization

What you get

• 100% remote
• private medical healthcare and multisport.
• Work in a small, senior engineering team
• Real influence on architecture and technical decisions
• Access to modern AI engineering tools with high usage limits
• A practical AI culture where tools support engineering work, while technical judgment remains with the engineer
• Work on a product where backend performance, scalability and latency have a direct and measurable impact