Lineation | Rust/TypeScript/React/GraphQL/PostgreSQL | Senior Software Engineer | Contractor Part-Time | Remote (US-friendly time zones) | https://lineation.ai

We’re building an Agentic AI Security Platform that helps teams secure autonomous AI workflows. We’re looking for a senior engineer to help design and ship core systems across policy enforcement, runtime monitoring, incident workflows, and auditability.

You’ll work across backend and product surfaces: Rust + gRPC services, GraphQL APIs, and TypeScript/React interfaces for security operations. You should be comfortable owning features end-to-end, making pragmatic architecture decisions, and collaborating closely with product/security teams in a small, fast-moving environment.

Strong fit if you have experience with distributed systems, secure-by-default engineering, and production observability. Security product background is a plus, but not required if you’re excited to learn quickly and build in this space.

If this sounds interesting, email us at [hello@lineation.ai] with Resume/CV plus links to your GitHub/LinkedIn and a short note on systems you’ve built.

Justworks | Hybrid (Toronto, CA – 3 days in office) | Full-Time | Senior Software Engineer https://www.justworks.com

We’re helping businesses get off the ground by enabling them to focus on running their business. At JustWorks, we tackle complex HR challenges so our customers don’t have to. We’re a data-driven team that’s constantly iterating and improving, and we care deeply about building meaningful products.

If you’re excited about working in a supportive, entrepreneurial environment—and want to have fun while building something impactful—we’d love to hear from you.

Apply here: https://job-boards.greenhouse.io/justworks/jobs/7721539?gh_j...

Feel free to DM me if you have any questions about the role or the company—happy to chat!

Saildrone | Multiple Roles | Onsite/Hybrid (US Only) | SF Bay Area (Alameda) | Full-Time | https://www.saildrone.com/

Saildrone is the world's leading operator of uncrewed surface vehicles (USVs), providing persistent in situ data from the most challenging ocean environments on Earth. Our fleet, ranging from the 23-foot Explorer to the brand-new 170-foot Spectre, is revolutionizing how we understand and secure our oceans. We work with global navies to deliver maritime domain awareness, partner with governments to map the seafloor in high-resolution, and collaborate with scientists to track climate change and hurricane intensification in real-time.

Maybe you saw that we recently unveiled Spectre, a new class of high-speed USV designed for strike and anti-submarine warfare[1]. Or perhaps you read about our partnership with Meta, where we completed the first-of-its-kind autonomous deep-water cable survey[2]. You might have also seen our ongoing mission with NOAA to map 13,000 square miles of the Mariana Islands[3].

Whether we are hucking drones into Category 4 hurricanes or scaling up the production of the world’s largest autonomous wingsails, we are looking for people who want to build the future of maritime autonomy.

We're hiring for a breadth of different positions across our organization. In software, we're looking for folks in our Perception, Platform/Frontend, and Vehicle teams. Stacks vary, but we're looking primarily for backgrounds in C++ and/or JavaScript (Node, TypeScript, React). All software positions are hybrid roles based out of our HQ in Alameda, just a quick ferry ride across the Bay from San Francisco.

In addition to software, we are also actively hiring for roles in:

* Production & Manufacturing (Composite technicians, assembly, and electronics)

* Fleet Operations (Mission managers, vehicle pilots, etc.)

* Hardware Engineering (Mechanical, electrical, and systems)

You can see a list of open positions on our career page: https://www.saildrone.com/careers

Please apply through our career page; be sure to select "Other" and specify this HN post when asked how you heard about us!

[1]: https://www.saildrone.com/media-room/press-releases/saildron...

[2]: https://www.saildrone.com/media-room/press-releases/saildron...

[3]: https://www.saildrone.com/media-room/press-releases/woolpert...

Vornoy | Remote (US) | Full-time | Software Engineer | $90k-$110k

We aggregate marketing and financial data into dashboards. Heavy backend focus on ETL, data pipeline, modeling, and normalization. Front end is straight forward React.

Looking for skills in Python, React, FastAPI, Postgres, ClickHouse, Spark, Kafka, AWS, MCP, RAG, OLAP. Familiarity with finance domain a big plus.

If you like the idea of wrangling complex data sets send me an email: john at vornoy.

MiLaboratories | Senior Software Engineer (Biologic Discovery) | Bilbao, Spain | ONSITE | VISA | RELOCATION

MiXCR is the standard for immune analysis, cited in thousands of papers. Platforma is the OS on top — bioinformatics as self-serve, interoperable "blocks" for biologic discovery.

5 of the top 10 pharma (Moderna, Pfizer, others) run discovery with Platforma today. Goal: 10 of 10 by year-end. Hiring 4–5 engineers in 90 days. Our tools are in the methods of approved cancer immunotherapies and COVID vaccines reaching millions. The next paper citing us could be the next drug.

We merged frontend, bioinformatics, and data into one team. AI killed the silo wall. Bioinformaticians who leaned into engineering and engineers who leaned into biology now ship at multiples.

WHAT YOU'D BUILD

- Discovery pipelines: raw sequences → pre-IND leads. Antibodies, biomarkers, workflows real scientists use.

- The SDK for comp scientists: TypeScript, Tengo (a Lua-like workflow DSL — yes, you'll learn it), Rust.

- The data layer: thousands of formats reduced to one. PFrames, Parquet, DataFusion, lazy columnar everything.

WHAT WE'RE LOOKING FOR

- Strong TS in 100k-line monorepos (pnpm, Turbo). Polars > pandas. Node ≥22.

- Bioinformatics exposure or appetite to learn it month one. We can teach VDJ recombination; not curiosity.

- Tolerance for sparse docs and niche DSLs. "Fix the SDK, don't work around it."

OFFER

- €90–120k base, real ESOP, ARR-tied bonus — when we grow, you grow, in cash, this year.

- Bizkaia Special Impatriate Regime: ~15–20% effective tax. Beats London / Berlin / Amsterdam net.

- Visa, relocation, soft-landing. No HR, no take-homes. Direct line to engineering.

- Bilbao: ocean, mountains, Michelin, low cost of living, highest quality of life. Onsite — context-sharing needs same room.

Email: stanp@milaboratories.com (CEO). Subject "HN", include GitHub. I reply personally. Tell me about a scientific CLI you wrapped, a plugin SDK you built, or a Polars query that survived 50M rows.

Sumble is the newco from the founders of Kaggle. We are hiring full stack engineers, ai/ml engineers and growth/marketing. Can view our roles and apply here: https://sumble-inc.workable.com/ We are building a knowledge graph from web data with a first focus on data for go-to-market teams.

We use web data to identify things like org structure, tech stack, and key projects (e.g., GenAI initiatives, cloud migrations). Our product already has strong product-market fit, early revenue, and happy customers — and now we’re ready to accelerate.

Our long-term vision is to become the world's best data vendor. Try the product at sumble.com.

We are a team of 25 with experience at companies such as Google, Meta, Stack Overflow, Rippling, Snowflake, Confluent and Kaggle.

We raised $38.5MM from Coatue, Canaan, Square Peg Capital https://techcrunch.com/2025/10/22/sumble-emerges-from-stealt...

Canopi| REMOTE (US-Based Preferred) | Senior Software Engineer | Contract | canopi.work

Hey this is Dixon from Canopi, a workforce risk intelligence platform built for ground transportation operators. Our AI engine continuously monitors driver eligibility signals and surfaces real-time alerts before a carrier loses a driver, gets fined, or faces a liability event. We are not a compliance tool. We are the autonomous brain that makes driver risk intelligence possible at scale.

Canopi is a Microsoft for Startups company building entirely on Azure, and is hiring engineers who want to build something that doesn't exist in the market today. We are open to an equity-first engagement while we close our seed round.

Reach out to dixon@canopi.work and mention HN in your email!

Return | REMOTE | DevOps / Platform engineer | Full-time

Return (https://return.energy) is hiring a DevOps engineer who will build and run the infrastructure behind 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 120 people, Return's technical team is still small (15 people). Our platform automates processes in energy storage, monitoring, market optimization, sales, project management, procurement, construction, and customer service. Behind it sits a mix of EU cloud and on-site compute at our battery sites, with strict uptime and security requirements.

During the first four 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 DevOps engineer who can own the full picture: cloud environments, self-hosted infrastructure at our BESS sites, and the operations centers in Amsterdam and Eindhoven from which we run the fleet.

Your primary focus will be to design, automate, and operate the infrastructure that our virtual battery platform runs on. That means EU-only cloud providers for application workloads, hardened on-premise setups at our sites, and the connectivity in between. You will be the person who decides what gets deployed where, and who makes sure it stays up and stays secure.

https://jobs.polymer.co/return/39863

Opendate | Senior Full Stack Engineer (Ruby on Rails) | REMOTE (US only) | Full-time | https://www.opendate.io/careers/senior-full-stack-software-e...

Opendate is the operating system for live music venues — booking, ticketing, marketing, and settlement, all in one place. We replace the tangle of spreadsheets, holds-and-confirms email chains, and ticketing platforms that independent venues, promoters, and festivals have been duct-taping together for decades. Customers range from 200-cap clubs to multi-day festivals.

We're a Rails shop with real backend problems: multi-tenant ticketing at on-sale scale, financial settlements that have to reconcile to the penny, and integrations with the rest of the music industry's plumbing (Stripe, Dwolla, Seats.io, Twilio, SendGrid). If you like systems where correctness actually matters and the users are people you can go meet at a show, you'll fit in.

Stack: Rails, React/Redux, PostgreSQL, Redis, BigQuery, AWS, GCP, Docker, Terraform. Flutter on mobile. AI-first engineering culture — Cursor, Claude Code, and Copilot are part of the daily workflow, not banned from it.

100% remote within the US (no sponsorship), with optional Indianapolis or Chicago offices if you want them. Looking for 5+ years of senior full-stack experience, comfortable owning projects end-to-end and shipping to production weekly.

Apply: https://www.opendate.io/careers/senior-full-stack-software-e...

Falconer | Founding Backend Engineer | HYBRID (USA, SF Bay Area preferred) | Full-time | $150-250K + equity | https://falconer.com

Hey HN! I’m an engineer at Falconer, a well-funded SF startup building the future of self-updating knowledge.

We’re a small team where everyone excels at what they do. At Falconer, you’ll join former staff-level engineers from Meta, Uber, Google, and Amazon, alongside others deeply involved in open-source culture, including myself.

As a founding engineer, you'll have a major impact on our product development and technical direction over our infrastructure.

To apply: https://falconer.com/jobs?ashby_jid=cf424d45-bc08-4036-be3d-...

EaseCloud | Remote (EST overlap) | Full-Time | Platform & Data Engineers | https://www.easecloud.io

EaseCloud builds cloud platforms and modern data stacks for companies scaling on Kubernetes and Snowflake.

We’re hiring engineers who like working across infra + data and actually running what they build in production.

Open Roles:

++ Platform Engineer (Python, GCP & Azure) [Kubernetes, Terraform, Python, GCP, Azure, CI/CD]

++ Platform / Data Engineer [Airbyte, Snowflake, dbt, Metabase, Python]

What you’ll do:

- Own systems end-to-end (design → deploy → operate) - Build and scale multi-cloud platforms - Run production data pipelines and analytics stacks - Work directly with founders and engineering teams

We’re a small team, high ownership, no unnecessary process. You ship, you own it.

Remote-first (EST overlap helps).

Apply: careers@easecloud.io or visit https://www.easecloud.io/careers

Mention you saw this on HN.

Flowstate | https://flowstate.inc | Senior/Staff Product Engineers | Solution Engineer | Growth Marketing | Account Executives

AI spend is skyrocketing in the workplace, and leadership can’t attribute, can’t classify, can’t forecast, can’t control that spend accurately. Flowstate is the insights & governance layer for AI workforces.

Location: London, New York.

https://www.flowstate.inc/careers/

Spacelift | Remote (Europe) | Full-time | Senior Software Engineer | $80k-$110k+ (can go higher)

We're a VC-funded startup (recently raised $51M Series C) building an infrastructure orchestrator and collaborative management platform for Infrastructure-as-Code – from OpenTofu, Terraform, Terragrunt, CloudFormation, Pulumi, Kubernetes, to Ansible.

On the backend we're using 100% Go with AWS primitives. We're looking for backend developers who like doing DevOps'y stuff sometimes (because in a way it's the spirit of our company), or have experience with the cloud native ecosystem. Ideally you'd have experience working with an IaC tool, i.e. Terraform, Pulumi, Ansible, CloudFormation, Kubernetes, or SaltStack.

Overall we have a deeply technical product, trying to build something customers love to use, and have a lot of happy and satisfied customers. We promise interesting work, the ability to open source parts of the project which don't give us a business advantage, as well as healthy working hours.

If that sounds like fun to you, please apply at https://careers.spacelift.io/jobs/3006934-software-engineer-...

You can find out more about the product we're building at https://spacelift.io and also see our engineering blog for a few technical blog posts of ours: https://spacelift.io/blog/engineering

Giftster | Senior Fullstack Python Developer | Minneapolis, MN (Greater Twin Cities Metro) | Local Candidates Only | Full Time | Salary 150K-190K | www.giftster.com

Yello! I'm Ian, co-founder and CTO at Giftster. Giftster is an online two-way wishlist service tailored for families and friend groups. Founded in 2008, we have over 3 million members and counting. We are looking for a Senior Fullstack Python/Django Developer to join our web dev team.

In this role, you’ll take ownership of both building and running Giftster’s core systems. This includes our backend services, web platform, and mobile API—all of which power millions of wishlist interactions.

We’re looking for someone who can contribute across the full stack and is equally comfortable shipping new features and ensuring the system operates smoothly in production. Strong experience with Python is essential and Django experience is preferred.

You’ll collaborate with product and design to refine requirements, implement new functionality, improve existing features, and resolve issues. Just as importantly, you’ll help ensure that what we ship remains stable, performant, and reliable for our users.

Core Technologies:

Python, Django, Django REST Framework, Javascript (Vue), CSS (Tailwind), HTMX, Docker, Git, Google Cloud Platform (Cloud Run, Cloud SQL, etc), Cloudflare

We are looking to add to our local team, so while work is remote, all applicants must be local to the Twin Cities MN Greater Metro area. Sorry!

Apply here:

https://www.linkedin.com/jobs/view/4405362533/

Thanks for checking us out!

Sectigo | Manager, Software Development | HYBRID (Canada) Ottawa,

Company Description

At Sectigo, we align around our mission and pride ourselves in helping thousands of customers sleep better at night.

Sectigo is the most innovative provider of certificate lifecycle management (CLM), delivering comprehensive solutions that secure human and machine identities for the world’s largest brands. Sectigo’s automated, cloud-native CLM platform issues and manages digital certificates across all certificate authorities (CAs) to simplify and improve security protocols within the enterprise. Sectigo is one of the largest, longest-standing, and most reputable CAs with more than 700,000 customers and two decades of delivering unparalleled digital trust.

Job Description

We are looking for a talented Manager, Software Development to join our growing global team at Sectigo.

The Manager, Software Development leads a team of software engineers in building secure, scalable, and high-performing applications. The ideal candidate will have a strong background in application development (PHP, Ruby, Golang, cloud deployments) best practices and a solid understanding of SSL/TLS certificates, private keys, and secure communication principles. This role combines technical leadership with strategic oversight to ensure the delivery of robust and secure solutions.

Apply: https://jobs.smartrecruiters.com/Sectigo/3743990012649388-ma...

Railtown AI | Head of Developer Relations | REMOTE (North America preferred) / Vancouver, BC | Full-time | $130k-$180k + equity | https://railtown.ai/careers/head-of-developer-relations

Railtown AI is building a unified platform for modern AI-powered software development. Our products span developer productivity engineering, backend infrastructure for agent and app development, a Python framework for production-ready agents, and structured evaluation workflows for responsible AI deployment.

We're looking for a Head of Developer Relations to help make Railtown AI the default stack for building, observing, and evaluating AI agents. You'll own the developer narrative across Conductr, Railengine, Railtracks, and Agent Evaluations, then turn that story into adoption through technical content, demos, docs, community programs, open source growth, and direct feedback loops with product and engineering.

Good fit if you've spent 5+ years in developer advocacy, DevRel, technical product marketing, or a similar developer-facing role; have scaled a developer platform or technical audience; understand AI tooling, agents, and observability; and can write code, demo live, and communicate clearly with both developers and executives.

Benefits include health coverage, equity, flexible time off, paid parental leave, annual company retreat, and WFH equipment stipend.

To apply: https://railtown.ai/careers/head-of-developer-relations

SerpApi | https://serpapi.com | Junior to Senior Fullstack Engineer multiple positions | Customer Success Engineer | Hiring Coordinator | Python/Ruby/PHP/Js/Rust/Cotlin/C#/Crystal/Nim/Elixir Developer Advocate positions | Based in Austin, TX but remote-first structure | Full-time | ONSITE or FULLY REMOTE | $150K - 180K a year 1099 for US or local avg + 20% for outside the US

SerpApi is the leading API to scrape and parse search engine results. We provide 100+ APIs to Google, Google Maps, Google Images, Bing, Baidu, and more.

Our current stack is Ruby, Rails, MongoDB, and React.JS. We are looking for more Junior and Senior FullStack Engineers.

We have an awesome work environment: We are a remote first company (before Covid!). We do continuous integration, continuous deployments, code reviews, code pairings, profit sharing, and most of communication is async via GitHub.

We value super strongly transparency, do open books, have a public roadmap, and contribute to the EFF.

Apply at: https://serpapi.com/careers

Marker | Full-time | REMOTE or HYBRID (NYC/SF/London) | https://markercollective.com

Marker is a technology joint venture from 3 leading communications agencies. We’re an incubator building and launching force-multiplying software products for communications teams.

Our first product is Delve (https://delve.news) — a coverage monitoring, analysis, and insight toolkit to track and measure the entire online conversation about your business or industry.

Our product team is small and autonomous, but with the resources, expertise, and customer access of the global agencies we work with. We’re hiring an early engineer to join us on this journey; you’ll have a large impact on what we build, how we build it, and where we’re going next.

Our technology stack includes Deno, React, PostgreSQL, and Elasticsearch. Bonus points for expertise in any of: data visualization, distributed systems, web scraping, large-scale data pipelines.

Apply: https://careers.markercollective.com/jobs/479834-software-en...

No recruiters or agencies, please.

Tandem Health | Software Engineers | On-site in Stockholm, Sweden | Full time

At Tandem Health we're building a clinician copilot to allow clinicians to focus on care rather than administration. We’re building, launching and iterating quickly, and are already rolling out across some of the largest care chains across Europe, including most of the NHS.

Our first product listens in to the patient-clinician encounter to generate medical records, allowing clinicians to save 5-10 minutes per patient. No longer do clinicians have to catch up on administration after hours.

We’re expanding our Stockholm team with exceptional builders in a wide range of roles.

More info at https://tandemhealth.ai/about/careers

Scholarly | Senior Software Engineer | Seattle, On-Site | Full-Time | $160k - $200k + equity + health benefits + equipment budget

Scholarly is building the HR operating system for higher education. We've built a software platform that enables our customers to make data-driven decisions and to automate essential processes like performance reviews, tenure processes, leave workflows, and more. We are a venture-backed seed stage company of experienced, motivated, and collaborative folks. We are backed by leading investors in the industry and working with some of the best universities in the US.

We're looking for a full-stack candidate without about 5 years of experience building web applications. We write Ruby and Rails, but we are considering candidates with other stack experiences. Engineering is based in Seattle and on site in Pioneer Square. Looking to get back to a collaborative, in-office culture post-COVID? Let's chat.

If interested, please apply here: https://jobs.ashbyhq.com/Scholarly/d4c84468-fd4b-4dd7-9b22-2...