Junior Software Engineer — Remote, Argentina

Who we are

MixRank processes petabytes of data every month from web crawling. We have hundreds of customers using our data products, including Google, Amazon, Facebook, Intel, and Adobe, across Sales, Marketing, Finance, and Security.

Our team is 65+ full-time, fully remote, and spread across 20+ countries. We’re growing, profitable, employee-owned, and have no dependence on outside funding. Applicants from all geographies and backgrounds are welcome.

MixRank is led by Scott, a mathematician, coder, entrepreneur, and data enthusiast who has been building and programming computers since he was 11. He skipped high school and enrolled in college at 14, later completing a BA in Mathematics at UC Berkeley in four semesters while building businesses on the side to pay for school. Scott has written code used by tens of millions of people and built systems that have processed hundreds of petabytes of data. His background reflects the deep technical curiosity, intensity, and builder mindset that defines MixRank’s culture.

We’re looking for passionate individuals for whom programming is not just a job, but something they love to do. We’re obsessed with computers, programming, big data, databases, compilers, hardware, math, data science, and the internet. If this sounds like you, please apply to join our team.

What you’ll work on

We’re hiring generalist software engineers to work across web applications, data mining, machine learning/data science, data transformation/ETL, data modeling, database scaling, infrastructure, devops, and more. We’ll cater the role to the areas that best match your interests.

Our codebase is friendly to new contributors. You’ll have a fully functional development environment within hours, and many engineers start contributing quickly. Deployments to production happen multiple times per day and finish in less than 2 minutes.

Effectively all of our codebase is written in Python, Rust, SQL, JavaScript/TypeScript, and Nix. The core technologies you’ll need familiarity with to be productive are Python, PostgreSQL, Linux, and Git. Beneficial experience includes PostgreSQL, Python, Rust, Linux, TypeScript, Nix, frontend/backend web development, and data mining.

Why the work is interesting

We operate at a larger scale than typical startups. We run two datacenters with high-performance servers we’ve built to handle the volumes of data we process. We’ve implemented our own distributed file system, run full-scale web crawls, and download and perform static analysis on the entire universe of Android APKs and iOS IPAs that are published.

Unlike a typical startup where you might spend half your time in meetings and the other half fixing Jira tickets, at MixRank you’ll work on difficult technical problems that help you grow as an engineer.

What we value in engineers

We’re especially interested in engineers who are passionate programmers beyond their day-to-day work. This might mean contributing to open-source projects, building hobby projects, experimenting with new programming languages, writing tools for yourself, or exploring technical ideas simply because they’re interesting.

Many of the strongest engineers we’ve worked with are self-starters: people who teach themselves new things, follow their curiosity, and enjoy solving difficult problems independently. Experience with functional programming languages such as Haskell, OCaml, Lisp, Clojure, F#, or Scheme can be a strong signal of that curiosity, though it is not required.

Because MixRank is fully remote and async, we look for people who are comfortable taking ownership, communicating clearly in writing, and making progress without needing constant supervision. You do not need to come from a traditional background or have experience with every technology we use. What matters most is that you genuinely enjoy programming, like learning deeply, and are motivated by hard technical problems.

How you’ll ramp up

We don’t believe in a one-size-fits-all onboarding plan. At MixRank, we hire people, not job titles, and every engineer brings a different background, pace, and set of strengths.

If programming is something you genuinely love, we’ll support you as you get acquainted with our codebase, systems, and development workflow. Some engineers begin contributing meaningful changes very quickly; others spend more time learning the architecture, asking questions, and building context before taking on larger work. Both paths are welcome.

Our goal is to help you become confident and productive in a way that fits you. You’ll have access to experienced teammates, a friendly codebase, and a development environment designed to help new contributors get started quickly.

Mentorship and support

If you’re earlier in your engineering career, you won’t be expected to understand everything on day one. You’ll be supported by experienced engineers as you learn the codebase, ask questions, review technical decisions, and build confidence working on complex systems.

That support may include code reviews, architecture walkthroughs, pair debugging, and regular technical deep-dives into areas such as our distributed file system, crawling infrastructure, data pipelines, PostgreSQL scaling, and deployment workflow.

We still value self-starters who enjoy learning independently, especially in a remote async environment. But independent does not mean unsupported. If you’re curious, persistent, and genuinely passionate about programming, we’ll help you grow into meaningful technical ownership over time.

Apply : Please include your updated resume when applying for this role.