Atomic Tessellator | Front-end Engineer | REMOTE (UTC+12) | https://atomictessellator.com

We simulate materials at the atomic level for aerospace, defence, nuclear fusion, and advanced polymers. Our team of four built a near-comprehensive platform in the last year, we're the first to scale MLIPs across GPUs, and we're patenting our first rare-earth magnet substitute.

We're hiring a front-end engineer to take full ownership of our platform's UI, from testing to optimising performance to scientific visualisations.

Tech: Vue.js, TypeScript, Three.js, WebGL

More: https://atomictessellator.com/careers/front-end-engineer Apply: careers@atomictessellator.com

At CloudX (https://cloudx.io) we’re building a new supply-side advertising platform for mobile publishers. Yes, it's ads, and yes, there's AI involved, so stop reading here if that's not interesting to you.

It's a gnarly infra problem with huge scale, combined with an interesting product space that we think legitimately benefits from tasteful AI automation. We're doing cool things with Nitro Enclaves to prove that our auctions are fair. And our founding team have done this before with great success, first at MoPub (sold to Twitter) and MAX (sold to AppLovin).

We're hiring (all remote) for:

- Senior Fullstack Engineer https://jobs.gem.com/cloudx/am9icG9zdDogum5THF3fORqb1eEupFQx

- Senior Infrastructure Engineer https://jobs.gem.com/cloudx/am9icG9zdDo4vl4A1sEcc7sDQf8ZYiqR

- Senior Android SDK Engineer https://jobs.gem.com/cloudx/am9icG9zdDqPAWu1cxr3PmEuuTIdliI6

- Senior iOS SDK Engineer https://jobs.gem.com/cloudx/am9icG9zdDpOy3Qmt1fLsOu4gKwtwWTz

Our philosophy is to keep the team small, well-paid, and productive. We deploy every day and our monorepo CI suite takes about a minute to pass.

The best way to apply is directly through those jobs pages but if you have other questions you're welcome to email me at peter@cloudx.io. I always post here on HN because it's where I got my career started back in highschool; I will personally make sure you get a response if you apply.

Hi HN! CrossnoKaye is a Series C startup tackling climate change by transforming the heavy industrial sector. Our platform uses real-time optimization, advanced modeling, and modern cloud infrastructure to deliver 40% average energy savings and megaton-scale emissions cuts across industrial facilities. https://crossnokaye.com/

We’re hiring for 3 roles and looking for builders who want their work to have real-world climate impact:

1. Sr. Software Engineer - Control Systems |REMOTE (US)| This role would have the opportunity to support our control systems infrastructure initiative, which involves real-time control strategies, secure cloud communication, and large-scale system performance, all built in Go with AWS and Kubernetes. Deep Golang experience is a must-have.

2. Sr. Software Engineer – App Team | REMOTE (US)| In this role, you'd be partnering directly with physicists and data scientists on our Applied Science team to productionize cutting-edge research in physics simulation and optimization algorithms. Must have strong proficiency in Python and its data science ecosystem (e.g., numpy, pandas).

3. Sr. Software Engineer in Test | REMOTE (US)| We’re looking for a hands-on engineer who loves Python, backend frameworks, and automated testing. You’ll design and implement test frameworks for our ATLAS and Energy AI platforms, ensuring reliability across distributed, cloud-based systems. Must have strong proficiency in Python.

Interested? Email our team: careers@crossnokaye.com -- Please include a resume and the title of the role you're interested in within the subject line.

Thank you & I look forward to hearing from you!

Continua AI | https://continua.ai | Multiple Roles | ONSITE (NYC/Seattle) | Full-time | Salary + Equity

At Continua (http://continua.ai/), we're on our way to solving Social AI, and we're expanding our team! We've built an AI agent that users can invite into group conversations to make planning, coordination, and information retrieval effortless. We're social creatures and it just seemed to us a huge opportunity to bring AI into group settings. We've seen strong retention over the last few months and want you to help us bring our product to the next level. Try adding our agent at http://continua.ai/ to group chats and kick the tires! https://techcrunch.com/2025/08/12/google-vet-raises-8m-for-c...

I’m David (https://www.linkedin.com/in/dpetrou/), the founder and CEO. Before starting Continua, I was a Distinguished Software Engineer at Google. We’re backed by top-tier VCs (like GV) and incredible angel investors (like Jeff Dean). Our team is a fantastic bunch (http://continua.ai/team) of accomplished engineers and researchers from Google, Disney, and several AI startups. We're pretty clued in on the technology side and have a strong vision of how the transformative technology of the last few years along with our own secret sauce (not just a ChatGPT wrapper) can help a huge number of people.

We’re hiring systems and ML engineers: https://jobs.ashbyhq.com/continua/

You'll work on building and improving the best LLM group chat experience there is, including fine-tuning models to boost conversational quality and improve scalability and identifying novel ways to build a "memory" which leads to a personalized and unique experience for our users. You understand what it means to work at a fast-moving startup.

Oh, and we maintain a vibrant blog, including items of technical interest, at http://blog.continua.ai/. Check it out! :)

Sage Bionetworks (https://sagebionetworks.org/) | Principal SWE | Java, Python, TypeScript, Node.js | Remote (US) | Full time

Sage Bionetworks, a nonprofit focused on open science and accelerating biomedical research, is hiring a Principal Backend Research Software Engineer (US-remote). We build platforms like Synapse.org that enable global scientific communities to responsibly share data and generate insights, and we value people who thrive in collaborative, interdisciplinary environments.

In this role, you’ll lead architecture and backend development across our platforms. You’ll have broad autonomy to shape system design, prototype new capabilities, and work closely with scientists and product teams on tools that support cloud-based data workflows, large-scale computation, and emerging AI/ML use cases. Strong production engineering experience, deep Java skills, and comfort with cloud environments, CI/CD practices, and containerized systems are key; interest in scientific or data-driven applications is a plus.

Full post: https://sagebionetworks.org/careers/software-engineer-backen... Email: alberto.pepe@sagebase.org

AllSpice.io | Senior Software Engineer (Automation / CI/CD) | Python/Go/TypeScript | Boston / San Francisco / REMOTE (US) | Full-time

AllSpice is building GitHub/GitLab + CI/CD + Copilot for hardware engineering teams (smart vehicles, rockets, robotics, medical devices, IoT). We recently raised our Series A and are hiring a senior engineer to own major components of AllSpice Actions, our automation engine for circuit design. Work spans backend (Go), Python automations, API integrations, and a Vue/TypeScript UI. You’ll help improve our platform, build integrations and help define hardware DevOps. Stack: Go, Python, TypeScript/Vue, Rust, Postgres, AWS, Docker Swarm, Terraform, GitHub Actions, Gitea. Hybrid in Boston/SF or Remote (US). Small, senior team; high ownership; salary + equity + full benefits.

Apply: https://allspice.io/careers

I'm hiring a Contrarian. Reimbursement negotiable. Remote only.

I'm in the middle of a manic episode and could really use a sanity check.

My email is [my first name].[my last name]@gmail.com

Feel free to examine my last submission to Hacker News.

Please begin your email title with "YOUR FIRST MISTAKE IS".

Thanks in advance.

Rippling | Actively hiring across SF, NY, or SEA| ONSITE/HYBRID (3 days M/Tu/Th, non-negotiable)| Base + Equity (RSUs), pay range included in all job posts Rippling (YC W17) is a unified workforce management platform. We bring together HR, IT, and Finance in a single system to help businesses manage all their operations—from payroll and benefits to computers and corporate cards—globally. We're rapidly expanding beyond workforce management and have other verticals in active development.

We value engineers who are energized by, and thrive in, a fast-paced, high ownership environment. We have many high priority roles open across the org. Right now we're making major investments in growing the Financial Products & Spend Management engineering vertical.

IC Roles SWE 2 - Financial Products (Toronto) - https://ats.rippling.com/rippling/jobs/844d2bdf-d672-46d9-a7... Senior Eng - Financial Products - https://ats.rippling.com/rippling/jobs/1f81bd71-a3b5-4b91-aa... Staff Eng - Global Payroll - https://ats.rippling.com/rippling/jobs/cf48e126-e063-4163-9f... Sr Staff Eng - Global Payroll - https://ats.rippling.com/rippling/jobs/d3c8bed0-d988-4765-b8...

Engineering Management: Eng Manager - Global Payroll (Toronto) - https://ats.rippling.com/rippling/jobs/e43448da-6a87-45b9-a9... Sr Eng Manager - Financial Platform - https://ats.rippling.com/rippling/jobs/a9658fef-88df-4dad-a4... Sr Director of Eng - Payroll Platform - https://ats.rippling.com/rippling/jobs/2d85be1f-9538-49d3-b1...

Rippling Careers Page - https://www.rippling.com/en-GB/careers/open-roles

Veridise | https://veridise.com | REMOTE | Full Time

About Veridise: Veridise performs security audits for smart contracts, zero-knowledge circuits, blockchain implementations, key management services, and other off-chain services like relayers, bridges, wallet integrations, and more. Additionally, many members of the Veridise team research and develop modern security tools designed to tackle the ever-changing landscape of blockchain development, providing novel and automated insights into the security of smart contracts and zero-knowledge circuits.

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Frontend engineer position: Veridise is seeking a skilled front-end software engineer who will be responsible for developing and maintaining a front-end for a SaaS platform that provides security and code review tools. This individual will work closely with backend engineers, static analysis tool engineers, and security analysts to implement features such as collaborative code review, vulnerability triage interfaces, and interactive visualizations of compiler data structures. In addition, this individual will be responsible for collecting feedback from customers to determine how interfaces can be improved to better integrate into their workflow.

Application link:

- https://veridise.com/careers/veridise-careers-frontend-engin...

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Security analyst position: Veridise is seeking a highly skilled and motivated security analyst. The ideal candidate will have a strong background in computer science, possess advanced technical expertise, and demonstrate a deep understanding of security principles. This role involves identifying and mitigating security vulnerabilities through manual code review, running cutting-edge security tools and analyzing their results, actively staying up-to-date on emerging security threats, and learning to audit in new and exciting technologies. Application link:

- https://veridise.com/careers/veridise-careers-lead-security-...

- https://veridise.com/careers/veridise-careers-security-analy...

ChainSecurity | Blockchain Security Engineer | Full-time | INTERNS , HYBRID/REMOTE, Zurich, Switzerland | VISA possible | https://chainsecurity.com/

ChainSecurity is a young and innovative cybersecurity company that operates in the blockchain and cryptocurrency space. Our mission is to make the blockchain space secure and trustworthy for people, companies, and governments alike. We are proud of our security experts from the renowned universities ETH Zurich, EPFL Lausanne and others. We are trusted by 100+ blockchain companies and established corporations with security audits and services. We have secured complex systems for top blockchain clients, such as decentralized finance (DeFi) projects, and multinational organizations, such as banks and industrial consortia.

A ChainSecurity Auditor will review the most complex blockchain projects to find vulnerabilities which no-one else can. By using state of the art tools, expert knowledge and a deep understanding of the fundamentals, we secure projects handling billions, often forming the foundation in the new paradigm of an open financial system.

Your Responsibilities:

* Work directly with the developers of the most successful teams in the blockchain industry to audit their code and secure their products

* Contribute to our security tools and create new ones in collaboration with our internal research team

* Conduct security research and publish your findings

Requirements:

* Strong background in software engineering, focused on security relevant areas and most importantly being able to reason about complex code

* Experience with penetration testing, vulnerability scanning, threat modeling or similar is a plus

* Good knowledge of cryptography

* Proficiency with Linux and Git

* Good written communication skills

* Fluent in OOP programming language

Bonus Points:

* Formal Verification, White Box, Vulnerability Scanning

* Solid Blockchain Knowledge

* Consensus Algorithms

Join us here: https://www.chainsecurity.com/jobs/blockchain-security-engin...

Questions about the role? Contact: jobs@chainsecurity.com

Zeno Group | Hybrid | US - NYC

Hello everyone! I’m on the lookout for an SVP of AI & Tech Operations to join my team at Zeno Group. https://www.zenogroup.com

We're a global, integrated communications agency, and one of PR Week's Best Places To Work 2025!

• I’m shaping the technology landscape at Zeno from the ground up, which means juggling everything from procurement to infrastructure to education, and need someone who can help bring order to the chaos. We have a ton of amazing and passionate people and I (still!) only have two hands.

• What you'll do is wear many hats, and so adaptability is 100% your most important attribute, along with:

- Being a diplomat between Zeno and our sister companies

- Leading AI+technology education and literacy programs

- Performing discovery for and designing workflow automation

- Convincing creatives that AI won't steal their Cannes Lions

- Exploring turning random AI experiments into useful tools

- Keeping up with AI exploration and experimentation because it’s something you do already

• You need to be comfortable building with duct tape while executives ask why it's not done yet. Agency experience helps but isn't required; what matters is you can handle 72-hour deadlines, massive egos, and the phrase "the client changed their mind."

• You also don’t buy the hype, and can cut through tech industry bullshit like a hot knife through AI slop. Being a practical cynic is a strength—you want to believe.

• If you've successfully implemented some cool AI heat at scale and can explain it to people who still print emails, let's talk.

• Hybrid role, based in NYC. Big on cultural fit. While this is not a client-facing role, some occasional face time with clients is expected.

Here's the giant link to apply:

https://djeholdings.wd5.myworkdayjobs.com/ZenoCareers/job/Ne...

Adaptive Real Estate | Onsite | New York City | Full Time https://jobs.ashbyhq.com/Adaptive

Hi, I'm Sophie Matt, Recruiter at Adaptive. We are a Series A startup building the first truly AI-native ERP for the construction and real estate industries. Since launching in February 2023, we’ve grown to over 700 customers and raised $26M from Emergence, a16z, Pear VC, Box Group, etc.

We are hiring for a variety of engineering positions to join our team in NYC

- Senior Software Engineer (Backend): https://jobs.ashbyhq.com/Adaptive/e8a34d3e-38f6-4f21-ac4e-d2...

- Senior Software Engineer (Frontend): https://jobs.ashbyhq.com/Adaptive/dabfd1c3-07c7-4cfd-8ffc-7e...

- Senior Software Engineer (Full Stack): https://jobs.ashbyhq.com/Adaptive/c1a19602-303e-4eb3-8aa6-a4...

-Staff Software Engineer: https://jobs.ashbyhq.com/Adaptive/67860d94-83b1-43c6-8618-73...

Goji Labs (gojilabs.com): REMOTE (Americas or Europe)

Goji is hiring Product Designers! You'll drive strategy and our design-led software development approach.

Apply here: https://careers.gojilabs.com/32359

GreenArrow Email | Remote | Full-Time

https://www.greenarrowemail.com/careers/developer

I'm Alex McHale, Lead Developer at GreenArrow Email. We're looking to add an additional developer to our team. The right candidate will have solid Go skills and can "hit the ground running" (so sorry for the cliché). Bonus if you're a polyglot who might have skills in Ruby on Rails and JavaScript.

We've put a lot of thought into our job post. Please give it a read. If you think you're a fit, there's a link at the bottom of the post with a form to fill out.

Return | REMOTE | Software engineer backend (Go/Golang) | Full-time

Return (https://return.energy) is hiring a software engineer who will work on platforms that accelerate the transition to carbon-free energy. Return’s main activity is building and operating industrial-size Battery Energy Storage Systems. Our operations are located in the Netherlands, Germany, Belgium, and Spain. You will be making a measurable (country-level) impact on the transition to renewable energy. Return recently raised €300M to support its growth.

While we employ over 100 people, Return’s technical team is still small (13 people). Our platform automates processes in energy storage, monitoring, market optimization, sales, project management, procurement, construction, and customer service.

During the first three years of operation, we laid the foundation for our platforms, and we are ready to scale up. This is why we are looking for an experienced software engineer.

Your primary focus will be to further develop our battery virtualization platform that enables our customers to use slices of battery capacity distributed across our fleet of industrial-scale batteries.

Our tech stack/toolset is straightforward: Go, Python, Ruby, PostgreSQL, TigerData, dbt, Dagster, Grafana, Terraform, self-hosted + cloud compute. We tend to keep meetings to a minimum in order to provide at least five hours of uninterrupted coding time per day. We practice code reviews and apply automated and manual testing. Our web apps and platforms are often deployed multiple times per day.

Return has offices in Amsterdam, Berlin, Brussels, Hamburg, Munich, Madrid, and Stuttgart. We are very much open to working remotely as long as you live in the EU. Our hiring process is swift but thorough: a brief call to get acquainted and discuss financials, followed by one or more technical interviews, and a paid visit to Amsterdam to meet the team.

The tech team members have co-founded several companies and/or have experience with remote development teams since 2008. They will personally help you through most of the recruiting process (there is no recruiter involved).

Apply here: https://jobs.polymer.co/return/37860

exnaton (climate tech start-up) | Fullstack Engineer (with DevOps focus) | remote (EU) | fulltime

exnaton is a start-up spun out of ETH Zurich, which offers software for renewable energy to utility companies. Our AI billing software enables energy providers to set up energy communities and smart energy tariffs in their distribution areas. Users of our software can track their energy consumption and buy renewable energy from their neighbors, which makes investing in the energy transition simple and fun!

More details about the position here: https://exnaton-ag.jobs.personio.com/job/2122683?language=en...

GovSignals (https://www.govsignals.ai/)| New York (hybrid) | Full-time | Platform Engineer We’re building GovSignals, the most advanced government-contracting AI platform. We've raised a $5.5 million seed round led by Unusual Ventures, and our team brings deep experience from Palantir and across the national security sector.

We’re hiring a Platform Engineer to work directly with our CTO to build the foundation that powers how we develop, deploy, and scale AI systems — high-performance services, modern runtimes, and tooling that make engineering at GovSignals fast, secure, and elegant.

Stack: TypeScript, Node, Cloudflare Workers, Kubernetes, Docker, Postgres, Terraform, AWS

Apply here: https://jobs.ashbyhq.com/GovSignals

Digimondo GmbH – Multiple Roles – Germany (Hamburg preferred) – ONSITE / REMOTE https://www.digimondo.com/en/careers

About us: Digimondo (founded 2016, based in Hamburg) builds IoT software that helps cities, utilities, and enterprises become more efficient, sustainable, and digital. Over 100 customers across Germany and Europe use our solutions in Smart City, Smart Energy, Smart Building, and Smart Industry contexts. We’re a founder-led team of ~25 people, backed by major energy-sector shareholders, combining startup spirit with the stability and scale of an established company. Our values: fairness, passion, customer focus, quality, diversity. We’re growing strongly in the DACH region and internationally.

We are hiring (Germany, Hamburg preferred):

System Administrator – On-Prem Software Deployment & Support (m/w/d)

Cloud Infrastructure Engineer (m/w/d)

Senior Backend Software Engineer (m/w/d)

Senior Backend Software Engineer – Node.js (Hamburg/Remote) (m/w/d)

Software Engineer IoT – Vue.js (m/w/d)

Senior Backend Software Engineer – Kotlin (m/w/d)

What we offer:

Work on real-world IoT infrastructure used by utilities, cities, and industrial customers

Small, highly technical team with ownership and autonomy

Modern tech stack across cloud, backend, and IoT application layers

Apply here: https://www.digimondo.com/en/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

https://www.linkedin.com/in/iamarsenibragimov arsen at topliner.app

Intuition Machines, Inc. | Engineering Manager, ML Security/Research | MULTIPLE ROLES REMOTE - WORLDWIDE

Want to lead ML systems that protect hundreds of millions of users daily, operating at millions of req/s? Interested in building models under strict latency/compute constraints while adapting to adversarial drift?

Intuition Machines (company behind hCaptcha security suite) is hiring an Engineering Manager, ML Security/Research to lead a distributed team, own architecture, and stay hands-on with real-time ML + distributed systems.

If you have strong experience in production ML, MLOps, and large-scale infra, come help secure the internet.

Apply: https://apply.workable.com/imachines/j/2A562B4CE5/

Also hiring:

SREs https://apply.workable.com/imachines/j/CD0057C4CC/

Senior Backend Engineers https://apply.workable.com/imachines/j/A701CCC579/

Technical Marketing Manager https://apply.workable.com/imachines/j/A791867AA4/

And many more: https://apply.workable.com/imachines/