JavaScript Jobs - June 2026

DearHiringManager.io is an early-stage SaaS product that helps job seekers find the real decision-maker behind a job opening.

A user pastes a job post URL, and the system identifies the likely future manager or team lead, plus their work email and LinkedIn profile.

We are looking for a full-stack developer to help us improve and grow the product.

You will work on: * The web app * Job post parsing and company data * Logic for identifying likely decision-makers * Contact enrichment API integrations * AI prompts and structured outputs * User flows, credits, payments, saved results, and reliability

Stack/experience: * JavaScript or TypeScript * React, Next.js, or similar * Backend APIs and databases * Third-party API integrations * SaaS basics: auth, payments, limits * Nice to have: OpenAI APIs, Supabase, Vercel, Stripe, Resend, scraping/enrichment tools, recruiting or job board products

This is a hands-on role on a live early-stage product with real users. You will work directly with the founder and have a lot of ownership.

Apply: lars@dearhiringmanager.io

Please send a short note about yourself and links to things you have built.

We're a fast-growing custom & private loyalty platform powering programs for household-name brands. Small, fully-remote team across the US and Europe.

We want a detail-obsessed, autonomous mid-to-senior engineer (~5–10 yrs) to investigate customer problems, drive integrations end to end, and own the specs that make them work.

You will use AI to its fullest, but will keep a very close eye on whatever that AI produces. As such, this role is less about coding, and more about figuring out what to build, how that best fits into the system, and why things are as they are, debugging edge cases, anticipating failure modes, talking to people, and plain old debugging.

Tech-wise, we're running on Golang, and using custom database engine on top of local key-value stores, colocating the storage and compute on dedicated hardware servers, and reading data directly from mmap'ed pages of the database. Ever came across HN saying that one can run Twitter on a single machine these days? We're doing that in production. Zero lines of React, few third-party dependencies carefully vetted, every line of JavaScript manually written, and we render HTML server-side like it's 2005.

You: detail-oriented to a fault, self-motivated about investigation/debugging work, comfortable spoken English for client calls, available 9am to noon in New York time.

We are straightforward, driven, personal, and a little messy. We all care, and we expect you to care too.

Details + how to apply: https://jobs.bubblehouse.com/integration-engineer/

Kanary is a personal security platform that monitors the web to identify and reduce risk based on an individual's threat model. An executive has different exposure than a gamer, and our system classifies each person's risk across 55,000+ sources. We've been building since 2020, started in campaign security, data science, and government agencies, backed by Mozilla and Y Combinator. We have 200+ organizations on the platform and are fully funded by our customers.

Attackers have never had better tools. LLMs, social media, and search surface personal data in new ways. A few prompts can launch a deepfake and impersonation campaign. Risk sources appear and disappear across social platforms, telegram chats, and private data broker platforms. Kanary exists to play the cat and mouse game for people at the speed and scale of an agentic internet.

Kanary is a combination of software workflows (crawling, scraping, automation), AI (data classification, research, code generation), and people (analysts trained to support customers and escalate). This is dynamic system and requires an interest in adversarial programming.

We’re growing our team, and seeking a multifaceted engineer (2+ years experience). Our software stack is python, javascript, react, and for LLMs, we use Anthropic, OpenAI, and experiment with model fine tuning as needed. Experience with web scraping, data pipelines, or security tooling is required.

Must be authorized to work in the US. We’ll evaluate submissions for two weeks.

Email steven@kanary.com with something you've built and why it was hard.

Learn more here: https://www.kanary.com/join-the-team#senior-software-enginee...

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.