Seamas Markey

Engineering Manager

AboutHow I LeadWorkBeyond WorkContact

Engineering leader making solid software by building teams worth being on.

About

I started in QA, not engineering. My job was to find the problems before they became someone else's emergency. You develop a habit of asking “what could go wrong?” before anything happens. That habit never left me.

When I moved into engineering leadership, I brought it with me. Instead of testing code, I started applying it to teams: where are the gaps in how we work? What are we going to regret in six months if we don't say something now?

I think like an engineer. I just don't write the code, and I've never tried to pretend otherwise. Some days I still walk into a room full of engineers and feel the imposter syndrome kick in. But I've come to see that as an advantage. I hire people who are sharper than me at the craft, I rely on them, and I stay out of their way.

I'm an Engineering Manager at CallRail, leading the engineering team building the billing platform. Before that, I've run engineering and QA organisations across different domains and company sizes — always with the same approach: be clear about what matters, give people room to do their best work, and say the thing that needs to be said.

How I Lead

  • People are the product. What you ship today will change. The team you build will outlast it. That's where your energy belongs.
  • Quality starts before the code. If you're finding bugs after you've shipped, you've already lost. Teams work the same way. Most conflicts, bottlenecks, and misalignment are preventable. Say the thing early.
  • The Goldilocks process. Too little process is chaos. Too much is just management covering its own ass. The right amount gives people clarity without treating them like they can't think for themselves.
  • If you rest, you rust. I read, I ask questions, I try to be better than I was last quarter. I hold my teams to the same expectation. Not because growth is a KPI, but because stagnation is contagious.

Work

2025 — Present

CallRail

Engineering Manager

Leading the engineering team building the billing platform.

MarTechSaaSBilling
Oct 2022 — 2025

Eleven Software

Engineering Manager

Led 4 cross-functional engineering teams including 2 offshore contracting teams. Shipped over 27 projects, implemented DORA metric tracking across the engineering org, maintained 99.95% uptime SLA, and reduced AWS costs by ~20%.

Network ManagementHospitalityPropTech
May 2021 — Sep 2022

Consumer Cellular

Sr. Engineering Manager

Managed 3 engineering managers overseeing software for critical business functions — e-commerce, customer communications, and network operator integrations. Drove org-level initiatives to improve process, technology, and team capability.

TelecomE-commerce
Jan 2019 — May 2021

AltSource

Engineering Manager

Managed a domain team delivering large-scale projects. Established code review practices and test coverage standards for a full stack team. Drove process improvements across QA, DevOps, UX, and Data.

TelecomE-commerceConsulting
Dec 2017 — Jan 2019

AltSource

QA Engineer

Sole QA on an engineering team. Where the transition from tester to leader started.

TelecomE-commerceConsulting
May 2014 — Nov 2017

Amtrust

QA Analyst Supervisor / QA Analyst

Led SQA teams responsible for automated testing across multi-million dollar systems.

InsuranceFinancial Services

Full profile on LinkedIn →

Beyond Work

Most of my time outside work belongs to a toddler who is somehow both completely exhausting and the best thing I've ever done. Everything else gets fit in around that.

Homebrewing

I've been homebrewing on and off for years. Some batches work out better than others, but that's half the fun.

Woodworking

There's something satisfying about working with your hands after a day of abstract problems. You end up with something tangible that either works or it doesn't.

Biking

I ride and I build them. There's something satisfying about knowing exactly how the machine you're on works. Being able to fix it when it doesn't is even better.

Logic puzzles

Crosswords, logic puzzles, strategy games. I love problems that have a clean answer. Good counterbalance to the ones that don't.

Also: guitar & ukulele, travel, home improvement, cooking, reading, dogs.

Contact

If something here resonates — or you think I've got it wrong — get in touch. I'm direct, I respond quickly, and I won't waste your time.

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Seamas Markey · Engineering Manager · Plain speaker · Still learning