JavaScript Jobs - July 2026

MWI Animal Health | Remote (US only) | multiple roles

MWI Animal Health is a leading U.S. distributor of animal health products, medications, and technology solutions for veterinarians and livestock producers.

1. Senior Application Developer (React + Composable Commerce)

We're hiring a senior dev (8+ yrs) to lead projects, mentor juniors, and build scalable apps end-to-end. Stack: React (Redux/Context), C#/.NET, microservices, headless commerce (CommerceTools, ContentStack), NoSQL + relational DBs, event streaming, TDD. You'll turn messy business requirements into solid technical solutions and help shape our architecture. Bonus: WMS experience. Apply if you like leading, mentoring, and shipping.

2. QA Engineer

We're hiring a QA Engineer to own quality across our suite of connected web applications and the shared services between them. You'll mix hands-on manual/exploratory testing with building and maintaining automated suites (end-to-end, integration, component), with a big focus on the seams between apps: navigation, shared auth, data hand-offs, and micro-frontend integrations. You'll own the full bug lifecycle, wire tests into CI/CD as reliable quality gates, and partner with product and engineering to build testability in from the start.

Ideal fit: 3+ years in QA testing web apps, across both manual and automated testing with modern frameworks (Playwright, Selenium) and unit/component tooling (Jest, Vitest). Comfortable testing SPAs and REST APIs, with enough JavaScript/TypeScript to write and debug test code. Bonus points for React, Vite, monorepos, micro-frontends, GitHub Actions. Above all, a user-focused mindset — catching problems before customers do.

3. Senior DevOps Engineer

We're hiring a Senior DevOps Engineer to standardize application deployments, containerization, and release processes across our org. You'll build shared CI/CD pipelines, containerize apps with Docker/Kubernetes, and create the tooling and golden paths that let teams ship reliably. Ideal fit: solid experience with CI/CD (GitHub Actions/GitLab CI/Jenkins), IaC (Terraform/Helm), and cloud providers (AWS/Azure), plus a track record of driving standardization at scale. Pragmatic, collaborative, and motivated by making other teams more productive.

For all of these roles, reach out to Alex at [Alex.Heck] (at) {cencora} (dot) [com]

Prophet Town LLC | Various Software Engineering Roles | US – Remote and Hybrid | English fluency required | Full-time | $150K-$260K annual total comp (multiple)

We are a people-first, boutique tech agency creating on-demand teams and software solutions for long-standing clients. These clients trust us to practice engineering excellence as though we were members of their own staff. Our leadership team is ex-Fortune 100 with software engineering backgrounds: we’re still coding. Notable recent projects include a gigantic ERP migration for Anduril Industries, and a skunkworks with Surge Labs helping to develop some of the frontier LLM models themselves (yes, seriously). This is a remote-first agency, but some projects involve onsite work.

I’m the founder and CEO, and I’m trying to do what I call “enlightened business”. I take responsibility for both staff and clients, and I look for people who approach their work with a similar sense of ownership. Applicants must meet a high bar - I personally review every hire. In return you’ll get:

* Flexibility and a low-bureaucracy environment * Clients that won’t treat the vendor like “the B Team” * The chance to act as a code architect, not just implement tickets * Exposure to a wide variety of industries and modern challenges * Me as your personal champion and advocate Feel free to submit, even if you already did in the past.

We’re currently especially seeking:

Back-end, Front-end, and Full-Stack Software Engineers, Tiers 3 and 4 (Typescript/Javascript, React, NextJS; Ruby on Rails; Python; DevOps, and third-party API integrations)

Tier 3 roles are typically 5-10 years experience with $150-$180K total comp.

Tier 4 roles are 11-20 years experience, $215-$260K total comp.

Higher tiers exist, and we always welcome exceptional applications.

Though not yet universal, many of our clients are now demanding senior/staff engineers with success using modern agentic approaches. Be ready to explain where current models work well and where they do not.

Please apply using this Google Form: https://forms.gle/Ec9WgTTakAV8HcAx9

MixRank (YC S11) | Software Engineers | 100% Remote (Global) | Full-Time

MixRank processes petabytes of data every month through web crawling. Hundreds of customers use our data products, including Google, Amazon, Facebook, Intel, and Adobe, across industries such as finance, recruiting, sales, marketing, and security. We’re a fully remote company with a global footprint across 20+ countries. We’re growing, profitable, employee-owned, and have no dependence on outside funding. Applicants from all geographies and backgrounds are welcome.

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

Our codebase is friendly to new contributors. You’ll have a fully functional development environment within hours through full automation and will be pushing commits on your first day. Deployments to production happen multiple times per day and finish in under two 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.

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

Unlike a typical startup where you might spend half your time in meetings and the other half fixing Jira tickets, at MixRank you’ll challenge yourself with difficult technical problems that help you grow as an individual. We’re continuously hiring for the positions below; these aren’t singular roles that close once filled. Our philosophy is that the candidate is more important than the position. For each new member of the team, we design a custom role and responsibilities around their interests.

Other companies may create a long list of specific requirements with the expectation that you’ll exactly replace someone on the team or fit a role defined by committee. MixRank is more pragmatic: we first get excited about bringing a unique individual onto the team, then figure out the best way to support their specific talents.

Junior Software Engineer - Remote (Global), Full-Time

We’re looking for remote junior engineers with 0–3 years of professional software experience and 5+ years of curiosity exploring computers, programming, and technical hobby projects.

This is an open-ended entry role with mentorship and diverse opportunities to work across all areas of our product: databases, distributed systems, infrastructure and tooling, data analysis, machine learning, frontend/backend web development, APIs, data mining, data modeling, and more.

To stand out, please highlight what makes you unique: passion for computing, curiosity and side projects, work ethic, niche research, or anything else that shows how you think and build.

Ideally, you’ve already graduated. But if you still have one or more years left of school, please feel free to apply anyway. If you’re the right fit for the team, we’ll figure out a way to accommodate your schedule.

Apply here: https://www.ycombinator.com/companies/mixrank/jobs/Fnwsojk-j

Software Engineer - Remote (Global), Full-Time

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

Beneficial experience includes PostgreSQL, Python, Rust, Linux, TypeScript, Nix, frontend/backend web development, and data mining.

Apply here: https://www.ycombinator.com/companies/mixrank/jobs/RXQspen-s

I’m Kiran, Chief of Staff at MixRank, a fully remote data startup building go-to-market intelligence. We’re US-incorporated but hire globally, and we’re bringing on new teammates to join a fast-moving team with real ownership and impact.