Senior Backend Engineer GO

Meet the YozmaTech

YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster.
We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact.
Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.

Our client is a pioneer in the field of identity data solutions, is revolutionizing how businesses confidently identify their customers and prospects across multiple touchpoints. Whether it’s through websites, applications, or physical locations, they provide innovative ways for their partners to interact with and understand their audiences.

We are looking for a Senior Backend Engineer to help scale a high-throughput, real-time bidding
platform that sits at the core of our header-bidding and identity products. You will design and
operate Go services that handle very high request volumes with tight latency budgets, working
close to the auction path where milliseconds and correctness both matter.
This is a hands-on engineering role on a fast-growing product. You will own services end to end

• from design and implementation through deployment, observability, and on-call — and

collaborate with product, QA, and business-development colleagues to ship integrations with ad-
tech partners and demand/supply platforms.

Key Requirements:
🔹Strong, production-level experience writing backend services in Go (Golang), including the concurrency model, profiling, and performance tuning (7+ years of commercial Go experience required).
🔹Demonstrable experience with header bidding — ideally hands-on with Prebid (Prebid Server adapters, modules, RTB, or comparable auction-side work).
🔹Experience building and operating high-throughput, low-latency distributed systems in production (must-have).
🔹Solid grasp of HTTP/REST, JSON, and server-to-server integration patterns, plus debugging across the request lifecycle.
🔹Strong experience with cloud infrastructure, primarily AWS (must-have). Experience with Azure and/or GCP is a strong advantage.
🔹Comfort with relational databases (e.g. MySQL / Aurora), including basic observability and deployment workflows.
🔹Pragmatic testing habits and a track record of shipping reliable software with good operational hygiene.
🔹Strong debugging and problem-solving abilities.
🔹Experience with CTV/video and post-bid measurement flows.
🔹Exposure to Prebid Server Java or other JVM services (useful for cross-module work).
🔹Experience with Kafka/streaming, Redis or similar caching layers, and container orchestration (Docker/Kubernetes).
🔹Hands-on experience using AI coding assistants (Claude Code, Cursor, GitHub Copilot, Codex, or similar) as part of the daily development workflow.
🔹English – Upper-Intermediate or higher.

What you will do:
🔹 Design, build, and operate high-throughput Go services on the real-time bidding and
header-bidding path, optimizing for latency, reliability, and cost at scale.
🔹 Develop and maintain Prebid integrations — Prebid Server adapters, bidder/identity
modules, and the supporting backend that powers them.
🔹 Build and harden integrations with ad-tech vendors (SSPs, DSPs, identity, and
measurement partners), including pixel, post-bid, and server-to-server flows
🔹 Profile and tune hot paths: concurrency, memory allocation, connection pooling, caching,
and request fan-out under high QPS
🔹 Own services through their full lifecycle — instrumentation, dashboards, alerting, and
participation in the on-call rotation.
🔹 Partner with product, QA, and business development to scope new partner integrations and
turn requirements into reliable, well-tested code.
🔹 Contribute to architecture decisions, code reviews, and engineering standards across the
Bidfusion team

Interview stages:
🔹 HR Interview;
🔹 Technical Interview;
🔹 Final interview;
🔹 Reference Check;
🔹 Offer;

Why Join Us?

At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products – and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.
From day one, you’ll get:
🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer.
You’ll always know what project you’re joining – and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.