Holepuch|Remote, Worldwide|Senior Node.js Software Engineer

At Holepunch, we are redefining the internet’s architecture. Our open-source P2P platform, Pear, enables developers to deploy applications directly from their machine to users, creating scalable, decentralized applications without traditional server infrastructure. We are seeking Node.js Software Engineers to join our 100% remote, globally distributed team. You’ll work on our P2P stack, which includes over 1500 public npm modules, and help expand our ecosystem.

Why Holepunch?

- Work on groundbreaking technology that prioritizes user autonomy and privacy.

- Collaborate with a team of thinkers and innovators dedicated to reshaping the digital landscape.

- Contribute to a future where technology serves humanity, not the other way around.

Apply now to join our mission:

https://holepunch.recruitee.com/o/p2p-nodejs-engineer?source...

https://holepunch.recruitee.com/o/senior-node-engineer?sourc...

Matcha.fm | Founding Growth Fullstack Software Engineer | REMOTE (Canada, Europe, UK, US)

I’m a repeat founder now building Matcha.fm

I’m hiring a cracked Founding Growth Engineer to build virality directly into the product and drive 100x user growth.

This is a true 0→1 founding role with massive ownership:

- Build virality loops into the core product - Proven track record driving significant user growth - Founder or early founding-team experience comfortable in early-stage chaos and high ownership - Strong product intuition and design sensibility - Strong SEO / GEO a plus

Tech stack: - React, Next.js, Postgres

Comp: Up to 20% equity Location: Fully remote (Canada, Europe, UK, US)

Apply : https://matcha.fm/apply/segrowth/hn

Modall | Frontend Developer (React/Next.js) | Uxbridge, ON (Greater Toronto) | On-Site | C$60-80k

We're a 5-person dev agency building AI, Web3, and SaaS products for startups, NFL players, and enterprises.

Stack: TypeScript, React, Next.js, Tailwind, React Native | Node.js, Prisma, PostgreSQL

The work: You'll ship pixel-perfect UIs from Figma designs, make architectural decisions, and see your code go into production for real clients. No legacy maintenance, just greenfield builds.

Strictly on-site (Mon-Fri, 9-5:30pm) because we believe in high-bandwidth collaboration. No remote.

Outside of client work, we also incubate internal SaaS products. Team members can contribute to these projects outside regular hours for equity if interested.

Apply: https://modall.breezy.hr/p/552471e37316-frontend-developer-r...

Microsoft AI | Platform Engineering | Full-time | Seattle, WA or San Francisco Bay Area | ONSITE (4 days/week)

We're building the platform primitives that power https://copilot.com (Microsoft's ChatGPT). If you've shipped systems at scale—whether backend services, distributed infrastructure, ML platforms, or consumer AI products—we want to talk to you.

The work: design and build secure, performant platform services for AI at scale; collaborate with infrastructure, product, design, and research teams; ship high-quality code that reaches hundreds of millions of users; move fast in a design-driven environment.

You: solid fundamentals in systems thinking and software engineering; fluent in Python, C#, C++, Java, JavaScript, or similar; shipped real products or systems people use; can communicate across technical and non-technical teams.

Compensation: Competitive with other frontier AI companies, commensurate with experience

We're actively hiring and will respond to applicants. Check https://microsoft.ai/careers for current openings, or email maiplatformjobs@microsoft.com if something specific doesn't fit the bill. Apply directly if genuinely interested in building the future of AI.

Zefr | Los Angeles, CA (Marina del Rey) | Staff or Principal Site Reliability Engineer | Full-time | On-site 2-3x per week | Staff: $190,000 - $210,000, Principal $210,000 - $235,000

Company

Zefr is the leading global technology company enabling responsible marketing in walled garden social environments. Zefr’s solutions empower brands to manage their content adjacency on scaled platforms such as YouTube, Meta, TikTok, and Snap. Through its patented AI technology, Zefr offers brands and agencies more accurate and transparent solutions for social walled gardens.

Role

Staff or Principal Site Reliability Engineer

You

As a Site Reliability Engineer at Zefr, you’ll apply your expertise in cloud infrastructure, CI/CD, Observability, and core SRE concepts, to deliver high-quality, reliable, and scalable solutions.

We’re looking for someone to combine their technical expertise with strong leadership and a passion for continuous improvement and innovation. Zefr wants a candidate that champions reliability as a product feature, and can translate complex technical concepts into strategy. This is a role where you'll shape how we build and operate systems at scale.

Tech Stack

Clouds - GCP, AWS

Kubernetes - GKE, EKS

GitOps - ArgoCD, Github Actions

Languages - Python/React/Node.js

Observability - Prometheus, Grafana, Open Telemetry, Chronosphere

Staff: <https://zefr.com/about-us/careers?ashby_jid=bcfa5b44-6623-4e...>

Principal: <https://zefr.com/about-us/careers?ashby_jid=54ecc7d8-6c8b-46...>

Freetrade | London, Budapest (ONSITE) | Full-time | https://freetrade.io | £75k-£140k

Freetrade is a commission-free investing app used by over 1 million people in the UK. Our team is expanding, and we’re seeking software engineers to evolve and scale our core investing platform.

In this role, you will be instrumental in building and maintaining reliable and trustworthy systems for trade execution, clearing and settlement, asset servicing, and internal operational tools.

You will also play a key role in shaping our technical direction and mentoring other engineers as our team grows.

Tech we use: TypeScript, Node.js, Postgres, and GCP

Note: We are three days in the office We don’t sponsor visas at the moment.

We are hiring across the board in engineering, data, people, marketing, risk & compliance and finance.

See all of our opportunities here: https://freetrade.io/careers

Teamtailor | AI Product Developer | REMOTE (EU) or HYBRID (Stockholm/Gothenburg/Linköping, Sweden)

Hi! I'm CJ, Head of Product at Teamtailor (https://teamtailor.com). We're a bootstrapped scale-up based in Stockholm, Sweden but with a global presence. 600 people spread out all over the world. Our Product/Engineering team consists of 60 amazing developers and designers, with an average experience of 14+ years. All working together to build an ATS (Applicant Tracking System) that's loved by candidates and recruiters — with AI at the core.

We launched our first AI-enabled features back in 2023, and having continued to improve and expand them since then. Our users and customers love it.

We're looking for more fullstack developers with experience integrating LLMs and want to help us build the future of AI-enabled, human recruitment.

Stack: Ruby on Rails, Ember.js, TypeScript. Shape Up method.

Learn more and apply: https://career.teamtailor.com/jobs/7046336-ai-product-develo...

Hey HN - I'm George, founder of xFigura. We're building the AI-native creative canvas for architects - Figma for the built world.

The problem: Architects design where you live, work, get surgery, send your kids to school. Their tools? AutoCAD (1982). Revit (2000). The physical world runs on software older than the iPhone.

Six months in, we have 5 of the top 20 architecture firms using the product. No marketing, $0 to $1M ARR in less than a year, and we just closed a $3M seed round.

What we're building: AI orchestration across 50+ generative models, infinite canvas collaboration, native CAD integrations (Rhino, Speckle, Revit), enterprise RAG for firm-specific knowledge.

Stack: DynamoDB, Next.js, Tailwind, AWS, FastAPI. Looking for someone who's shipped production AI systems and is in the 99th percentile of using AI in their own workflow (Cursor, Claude, etc.).

Small team, huge ownership. You'd own entire systems, not tickets.

Email me directly: info@xfigura.ai (mention HN in Subject)

Office Hours | Software Engineer (all levels) | SF, NYC, or Remote (US) | https://officehours.com We connect organizations (AI labs, startups, investors, consulting firms) with experts for paid calls, surveys, and model training. We're profitable and growing quickly.

We’re a small, senior team of product-minded engineers who value quality, simplicity, curiosity, and collaboration.

Some of the problems we're actively working on: - Workflow automation: Designing agent-driven workflows that are driving real impact for the business and our customers - Search: Building semantic + keyword retrieval over large amounts of data - Knowledge graph: Modeling relationships between people, companies, topics, and interactions to power recommendations and discovery - New products: 0-1 work across new interaction types and mediums

Stack: TypeScript, Node, Postgres, OpenSearch, Temporal | React, Next.js, Tailwind | AWS

Open roles:

- Senior/Staff Software Engineer: https://jobs.ashbyhq.com/office-hours/f9e9f476-100b-4d86-b36... - Software Engineer: https://jobs.ashbyhq.com/office-hours/664c0299-27c5-4550-91e... - Senior Product Designer: https://jobs.ashbyhq.com/office-hours/d4ad4cb1-8ccd-49a9-b97...

P.S. If you apply, mention HN. Helps separate signal from noise.

Prompt Health| Senior Full Stack Engineer, Senior DevOps Engineer, Support Engineer | REMOTE (US) Prompt Health is a fast-growing Healthcare SaaS company with over $100M in ARR, growing 100%+ YoY. We build software used by large healthcare organizations to operate more efficiently and deliver better patient care.

We ship hundreds of features and products each year with a small, highly collaborative engineering and product team. Engineers have real ownership, work closely with product and customers, and influence technical direction.

Roles

- Senior Full Stack Software Engineer: $200k-$225k Build and scale core B2B SaaS product features. Work across frontend, backend, APIs, and data. Collaborate closely with product and design. Tech: PHP (Laravel), Vue.js, MySQL, AWS. High-traffic B2B SaaS

- Senior DevOps Engineer: $200k-$225k Own cloud infrastructure, CI/CD, reliability, and observability. Improve deployment speed, system stability, and security. Tech: AWS, Kubernetes, Terraform, CI/CD, Datadog

- Support Engineer: $90k-$125k Debug complex production issues. Work closely with customers and engineering to identify root causes and improve the product. Tech:PHP/Python, SQL, REST APIs, AWS

- Senior AI Engineer (Natural Language Systems): $160k–$220k Build real-time AI systems for speech and language understanding. Own NLP and LLM pipelines with a focus on accuracy, latency, and cost. Partner with Product and Engineering to ship production AI features. Tech: Python, NLP, LLMs, Speech-to-Text, Docker, AWS

- Senior AI Engineer (Rapid Prototyping & Analytics): $160k–$220k Prototype and ship end-to-end AI systems across ML and LLM workflows. Own evaluation, monitoring, and guardrails for AI pipelines. Translate business workflows into practical AI solutions. Tech: Python, LLMs, ML, Evaluation, Docker, AWS

Competitive compensation, equity, and benefits. We are actively hiring and will respond to applicants!

Senior Data Engineer: $170k–$190k Build and own end-to-end data pipelines and analytics systems that power product, operations, and client decision-making. Turn complex healthcare data into reliable, well-modeled datasets and insights. Partner closely with Product, Client Success, Growth, and Operations. Tech: Python, SQL, dbt or similar, AWS, modern data warehouses, BI tools (Metabase or equivalent).

Apply here: https://www.prompthealth.com/careers#list

Duckbill is hiring three-five engineers for 3 roles with hybrid work in downtown SF. We're in-office MWF and WFH Tuesday and Thursdays. Relocation is an option but sponsorship / remote is not.

We're working on Skyway, a new kind of enterprise-grade finops tool born out of the Duckbill Group's consulting business. We're staying small (team-wise) but focusing on the largest of the SaaS spenders and their problems exclusively. We ship daily and have several unfair advantages.

1. Senior Front-end Engineer (TS/JS/React + bit of Python back-end)

2. Senior Back-end Engineer (Python + bit of front-end)

3. Senior Data Engineer (Python, airflow, duckdb, s3, bigquery)

More details are on our careers page (apply through this): https://www.duckbillhq.com/careers/

Topliner - Senior Fullstack Developer (Node.js / Laravel / React+TS / AI Integrations) - Remote - $80k/year https://topliner.app We’re building Topliner, an AI-powered platform for executive search.

What you’ll work on: - Integrations with Loxo, Metaview, GetSales, Calendly - API design, background jobs, and sync pipelines - Auth flows, queue processing, caching - React+TS interfaces

Requirements: - 5+ years fullstack experience - Strong Node.js, Laravel/PHP, React+TS - API integrations, OAuth, async jobs - Understanding of scalable systems and data pipelines - Fluent English

Compensation: - $80k/year - Remote - Part-time → full-time path - Equity potential

Apply on here >>> https://topliner.app/careers

Comulate | Senior Engineer (3+ YoE) | ONSITE in San Francisco, CA

We're building automation software for the $7T insurance industry, accelerated by AI. Seed stage in terms of headcount (~ 20 people) but Series B in terms of business traction (+ cash-flow positive). We've intentionally stayed under the radar.

- Product has caused customers to literally cry tears of joy

- Experienced eng team from Airbnb / Brex / LiveRamp

- Stack: TS, Postgres, React, GraphQL, and Next.js

Apply here: https://about.comulate.com/careers

StraighterLine (straighterline.com) | Staff Software Engineer (Full Stack) | Remote (US Only) | Full Time

Our mission is to create opportunities for career advancement through access to affordable education. We are also the market leaders in early childhood (ECE) training and certifications. We are looking for two Staff Engineers to help lead development on next-generation learning platforms.

You will be building modern, API-driven, scalable services and applications with React/Next.js, TypeScript, Node.js, GraphQL, and AWS, using AI-assisted development practices. You will collaborate on architecture, shared services, internal tooling, and interface design, owning features from concept to production.

Competitive base salary, bonus and benefits (401k match).

Apply here: https://jobs.lever.co/straighterline/36d8f56b-14ac-4a35-af0c... and please mention HN under Additional Information.

Rolling Insights | Intermediate–Senior Node.js Developer (Sports Data + Generative AI) | REMOTE (Canada) | Full-time

Rolling Insights builds modern sports data products and APIs used by fantasy platforms, sportsbooks, and media companies. We work with large-scale real-time datasets and are expanding into generative AI-driven collection engines to help scale and automate our data assets.

We’re hiring an intermediate–senior Node.js developer with strong backend experience and comfort working across the stack when needed.

What you’ll do: - Build and maintain Node.js services and APIs powering live sports data products - Work with event-driven pipelines, data enrichment, and high-throughput systems - Collaborate on new AI-assisted features and workflows using LLMs - Contribute to architecture decisions and ship production features end-to-end

Tech stack: Node.js, JavaScript, React, Azure, PostgreSQL, real-time data systems, LLM integrations

Ideal background: - 3+ years professional Node.js experience - Strong API design and database fundamentals - Experience with cloud infrastructure (Azure preferred) - Interest in sports data, analytics, and applied generative AI

To apply: https://rollingwave.hrpartner.io/jobs/intermediate--senior-n...

Questions? Email us at info@rolling-insights.com

Wolf Games is looking for a U.S.-based, fully remote Software Engineer (3+ yrs experience) to help turn creative game prototypes into polished, production-ready web games. You’ll work hands-on in TypeScript and modern web game frameworks (Phaser, Pixi.js, Three.js), building gameplay systems, improving performance, and helping ship new experiences to players. This role is ideal for an engineer who enjoys moving from experimentation to execution and wants to see their work go live.

You’ll collaborate closely with engineering, design, and creative teammates to refine features, refactor early code, and contribute to shared systems that support multiple games. We’re a small, fast-moving team, so you’ll have real ownership, practical mentorship, and the chance to grow your skills while building interactive games in a creative, AI-forward environment.

$45-55/hour, 40 hours per week, contract-to-hire (benefits and equity at conversion) To apply: https://wolf-games.breezy.hr/p/009edf1b1963-software-enginee...

AppFolio | Staff Software Engineer, Platform Communications | REMOTE (US), Santa Barbara, San Diego, Dallas, Denver, Atlanta, Chicago | Full-time

Interested in real estate and proptech? The Platform Communications team at AppFolio (NASDAQ: APPF) is looking for a Staff Software Engineer who will be in charge of scaling up our SMS, email, in-app chat and voice offerings. Learn more and apply here: https://www.appfolio.com/open-roles?p=job/olWAxfw8

Stack: Ruby on Rails, TypeScript, JavaScript, React All roles: https://www.appfolio.com/open-roles

Findigs | Full-time | NYC | 3x/week in office (M,T, Th) | findigs.com

At Findigs, we’re transforming the rental experience — making it fairer, stress-free, and more convenient by changing the fundamentals of renting.

We build high-scale applications that streamline renting for millions. Our modern tech stack includes Python, Typescript, Node.js, React, and scalable cloud infrastructure.

We foster a collaborative culture where engineers have high ownership and autonomy, taking features from concept to deployment.

Join our sharp, supportive, and mission-driven team in our newly renovated SoHo/NoHo office.

Open roles:

Engineering Manager (https://jobs.lever.co/findigs/7b967407-b4db-4bc6-8cdb-16de43...)

Lead Software Engineer (https://jobs.lever.co/findigs/1ea92751-1c85-4eb6-84b4-86c529...)

Senior Software Engineer (https://jobs.lever.co/findigs/3b39616d-223f-4326-a500-f804c3...)

Competitive Base Salary plus Pre-IPO Equity

401k Matching up to 4%

Unlimited PTO

Lunch in office every day, home office setup stipend, monthly gym stipend

MapTiler | Remote (Europe) | Full-time | https://www.maptiler.com

We build mapping infrastructure and rendering engines for hundreds of millions of users. Currently developing a new WebGPU SDK for 3D geospatial visualization.

Hiring: WebGPU SDK Developer

• Implementation of GPU-accelerated rendering (shaders, pipelines, buffers).

• Work on high-performance visualizations, including Gaussian splatting.

• Agile environment (2-week sprints), direct impact on core rendering tech.

Stack: WebGPU, JavaScript/TypeScript, GPU shaders, Vulkan/Metal concepts.

Apply: https://www.maptiler.com/jobs/

Cosuno | Senior Full Stack Developer (TypeScript) / Senior AI Engineer – LLMs & Agents | Remote (EU) / Berlin | Full-time | https://www.cosuno.com

Cosuno is a fast-growing tech startup reshaping the construction industry with a digital platform for procurement. We use AI to analyze millions of price points, helping construction companies create bids based on real market data. We're looking to expand our team with creative minds who want to solve real-world problems and impact a massive industry. We are an open-minded, collaborative, and international team.

Currently, we're hiring for two key senior roles:

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Senior Full Stack Developer (TypeScript)

Location: Remote (EU) / Berlin

Stack: TypeScript, React, Node.js, Cypress, Kubernetes, AWS

Mission: Take full ownership of features, shaping both the frontend and backend of our product. You'll have the responsibility to extend and build upon our platform to make it more valuable, reliable, and maintainable. We value a trunk-based development workflow with daily releases, comprehensive end-to-end testing, and a solid CI/CD pipeline.

You have: 5+ years of hands-on engineering experience, substantial expertise in JavaScript/TypeScript, and experience with Node.js (React is a plus).

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Senior AI Engineer – LLMs & Agents

Location: Remote (EU) / Berlin

Mission: You will build agentic workflows using state-of-the-art LLMs. Lead the technical development of an agent that helps construction professionals process, improve, and validate complex construction documents. A key part of your role will be establishing and enforcing MLOps and LLMops best practices.

You have: 5+ years of engineering experience, with at least one year working with LLMs. You possess strong Python skills, a proven track record of deploying containerized services (Docker, Kubernetes), and deep expertise in at least one of the following: deep learning (PyTorch, Transformers), ranking/matching algorithms, or LLMops (RAG, evals, fine-tuning).

Interested? To apply and for more detailed information, please see the full job descriptions on our careers page: https://www.cosuno.com/en/company