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stackloader

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About stackloader

We exist to make great engineering teams unstoppable.

stackloader is an AI-native software studio. We partner with engineering teams at high-growth companies to ship faster, build more reliably, and compound their technical advantage — without accumulating the debt that slows everyone else down.

§ 01 / Who we are

Mission

Accelerate what matters

Our mission is to help product teams ship faster, build more reliably, and compound their technical advantage — without accumulating the debt that slows everyone else down.

Vision

AI-native by default

We believe the next generation of great software companies will build differently from day one. stackloader exists to give every engineering team access to that future now.

Values

High leverage, low noise

We optimise for impact per hour, not hours billed. Honesty over flattery. Craftsmanship over churn. We would rather turn down work that isn't a strong fit than deliver something we're not proud of.

§ 02 / Our story

Five years of building things that last.

  1. 2019

    Founded in London

    Elena and Callum met at a systems engineering conference, realised they had identical frustrations with how software studios operated, and decided to do something about it.

  2. 2020

    First external team

    Hired Nadia and Arjun. Signed our first three enterprise clients. Survived a global pandemic by being async-first from day one.

  3. 2021

    AI practice launched

    Arjun built our first internal LLM tooling. It cut code-review time by 40%. We productised it as a client offering and haven't looked back.

  4. 2022

    ISO 27001 certified

    Passed our first third-party security audit with zero critical findings. The certification unlocked regulated-industry clients in healthcare and finance.

  5. 2023

    AWS Advanced Partner

    Reached Advanced tier in the AWS Partner Network, reflecting the depth of cloud infrastructure work we deliver and the certifications across our engineering team.

  6. 2024

    35 products shipped

    Crossed 35 production deployments across five continents. Our NPS from returning clients hit 92 — the number we're most proud of.

  1. 2019

    Founded in London

    Elena and Callum met at a systems engineering conference, realised they had identical frustrations with how software studios operated, and decided to do something about it.

  2. 2020

    First external team

    Hired Nadia and Arjun. Signed our first three enterprise clients. Survived a global pandemic by being async-first from day one.

  3. 2021

    AI practice launched

    Arjun built our first internal LLM tooling. It cut code-review time by 40%. We productised it as a client offering and haven't looked back.

  4. 2022

    ISO 27001 certified

    Passed our first third-party security audit with zero critical findings. The certification unlocked regulated-industry clients in healthcare and finance.

  5. 2023

    AWS Advanced Partner

    Reached Advanced tier in the AWS Partner Network, reflecting the depth of cloud infrastructure work we deliver and the certifications across our engineering team.

  6. 2024

    35 products shipped

    Crossed 35 production deployments across five continents. Our NPS from returning clients hit 92 — the number we're most proud of.

§ 03 / The team

The people behind the work

A small team of specialists. No generalists, no account managers — just the engineers, designers, and AI researchers who ship your product.

EV

Elena Vasquez

CEO & Co-Founder

Elena co-founded stackloader after a decade leading engineering teams at Google and two Series B startups. She believes the highest-leverage thing a software company can do is make its engineers more effective — and that AI is the most powerful multiplier engineering has ever had.

CA

Callum Ashby

Principal Engineer

Callum has been writing JavaScript professionally since Node.js 0.6 and has the battle scars to prove it. He leads our frontend architecture practice, runs internal engineering workshops, and is the author of stackloader's component library standards.

NO

Nadia Osei

Head of DevOps

Nadia spent five years at AWS before joining stackloader to build the infrastructure practice from scratch. She's obsessed with making deployment boring — which means zero incidents, not fewer features.

LF

Léa Fontaine

Design Lead

Léa brings a systems-thinking approach to product design — every component she designs exists within a coherent whole. She built the design system at a Series C French fintech before joining stackloader to lead design across our client portfolio.

AN

Arjun Nair

Head of AI

Arjun did his PhD in NLP at CMU before working on recommendation systems at Spotify. At stackloader he leads all AI and ML engineering — from RAG pipeline design to production model deployment and evaluation infrastructure.

MC

Marcus Chen

Senior Backend Engineer

Marcus is a distributed systems specialist with a background in high-frequency trading infrastructure. He designed the event-streaming architecture for our FinFlow engagement and now sets standards for backend reliability across all stackloader projects.

§ 04 / How we work

Collaboration without ceremony.

§ 05 / Recognition

Awards and certifications

ISO 27001

Information Security

AWS Advanced Partner

Amazon Web Services

SOC 2 Type II

Compliance & Security

Google Cloud Partner

Technology Partner

Clutch Top Agency

B2B Service Excellence 2024

GDPR Compliant

Data Privacy Certified

Join the team

We're always looking for exceptional people.

We hire for craft, curiosity, and character. If you're exceptional at what you do and want to work on interesting problems, we'd like to hear from you.

See open roles