Carta | Senior Software Engineer II | Waterloo / Toronto | ONSITE (Hybrid OK)

Apply Here:

- https://job-boards.greenhouse.io/carta/jobs/7544237003

- https://job-boards.greenhouse.io/carta/jobs/7504452003

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Carta connects founders, investors, and limited partners through world-class software, purpose-built for everyone in venture capital, private equity and private credit.

Frontend Platform: You will own the core infrastructure and monorepo that underpins our entire frontend. Our mantra: "Create a development experience that people will miss when they leave."

Design Systems (Ink): You will build the foundational React components, tooling, and accessibility standards used by hundreds of Carta engineers to ship consistent UI. Check out our docs site at https://ink.carta.com

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Tech: React, TypeScript, Rspack/Vite/Rush, Node.js.

We are looking for engineers who care deeply about developer experience, accessibility, and enabling great design at scale.

CVector | Software Engineers, Senior Research Engineer | New York City (FiDi) | ONSITE | Full-time | VISA SPONSORSHIP

CVector builds software to bring real time economic optimization and AI prediction to every energy and manufacturing plant. We integrate real-time data visualization and analytics to help power generation stations, chemical plants, and other critical infrastructure make informed decisions in rapidly changing environments. You'll help create intuitive, robust web apps, machine learning models and backend systems, shaping tools that directly impact industrial operations and energy reliability. Build AI agent systems that automatically foresee upcoming problems and provide possible solutions.

Full Stack and Backend Software Engineers: We're looking for a passionate Software Engineers comfortable working across our stack (Python, Typescript, React, Supabase, MQTT, TimescaleDB, PostgreSQL, AWS, FastAPI) or someone to specialize in our backend infrastructure.

Senior Research Engineer: Candidates should be experienced with machine learning, and analysis using Python.

Reach out to me at jnapoli+hn@cvector.com

Doowii | Remote (US) | Full-time | https://doowii.io

Doowii is building an “AI operating layer” for education analytics: connect your institution’s systems (SIS/LMS/CRM), and non-technical teams can ask questions, explore, and take action with integrated workflows and highly customized data ontology.

We’re hiring SWEs to ship AI-first product experiences and infrastructure.

Roles: - Senior Software Engineer (AI Product / Backend) - Software Engineer (Full-stack, AI) - Implementation Engineers (FDE or CXE)

What you’ll build: - LLM-backed app features: multi-step query/reasoning flows, conversational UX, follow-ups, citations, and “show your work” - Evaluation + reliability: offline eval sets, regression testing for prompts/tools, quality metrics, guardrails, and latency work - Agentic workflows: tool-calling, retrieval over structured sources, workflows that can debug/repair queries and guide users to the right next step - App/platform foundations as needed: APIs, auth/RBAC, job orchestration, observability, and cost controls

Stack (approx): Python, TypeScript, modern web app stack, LLM tool-calling/RAG patterns, GCP.

You might be a fit if: - You’ve shipped real product features (backend + app), and care about UX + correctness - You have experience building LLM-enabled systems (or you’ve built strong distributed/backend systems and want to go deep on applied AI)

Comp: competitive salary + meaningful equity (seed-stage)

Email: ben@doowii.io Include: resume/LinkedIn

VDX.tv (http://www.vdx.tv) | Remote Engineers & Developers | Full-time | REMOTE Established company (20+ years) looking for mature generalists to contribute remotely. You can be anywhere in the world so long as you: ● Are self-motivated and can work independently

● Driven to constantly learn and are always searching for the bigger picture

● Strong in clear thinking and written communication

● Have experience with many languages but can be effective in any language

● Appreciate that all mature software solutions accumulate technical debt and understand how to continually reduce debt and complexity

● Understand how to build highly reliable systems and be responsible for taking code to production

● Understand that code simplicity and readability are more important for long term maintainability

● Want to work on challenging problems and impactful work without being micromanaged

We're hiring across disciplines for engineers who work with Unix and have fluent written and spoken English:

● Backend Servers: Strong in C, Concurrency and Distributed Computing

● Backend Servers: Strong in Java

● Infrastructure: Strong in building infrastructure tooling to program infrastructure.

● Frontend: Strong in Javascript, Typescript, React, and advanced UI and browser applications

● Artificial Intelligence: Strong in Neural Networks, AI Workflows, AI Models.

● Product Design: Ability to spec and build out clean UIs and dashboards.

We value people who are generalists and are interested in learning, developing, and applying expertise across multiple areas.

Although our core business is in digital video advertising, we do research and development in areas such as programming languages, databases, distributed computing, infrastructure, and ai.

We are private, which gives us the freedom to explore many areas without investors and profits being the sole objective.

Full-time only. Remote only. We start out on a full-time trial contract basis for up to 3 months and use this period as an extended work interview for both sides to assess fit for long-term employment.

Please email hn.remote.jobs@vdx.tv if this sounds like the right fit for you.

RINSE | REMOTE or San Francisco, Los Angeles, Chicago, Boston, New York, New Jersey, Seattle, Austin, Toronto, or Washington DC | Software Engineer | Full-Time | https://www.rinse.com

Rinse provides dry cleaning and laundry delivery services to customers in twelve metropolitan areas in the US and Canada. We have sophisticated logistics optimization software, a polished consumer product, and firm business fundamentals. We're now over a decade old - this is a stable, yet consistently growing and innovating, company.

Our engineering team is distributed across the United States and internationally, and has been entirely remote for years now, but a desk can be provided in the above cities if you'd prefer.

We're open to both newly-graduated engineers or more senior engineers, provided they meet our bar. We're particularly interested in true full-stack engineers, with strong React / Typescript / CSS skills to complement comfort in a Python / Django environment. We're also seeking engineers with experience leveraging AI to automate complex operational processes.

You will join a high-caliber team where collaboration, honesty, and open communication are at the core of everything we do.

Search term bingo: Logistics, Django, Python, Optimization, React, React Native, Postgres, Mobile Engineer, Automation, Delivery, OR-tools, Forecasting

AllSpice.io | Multiple positions across Eng team. ALL REMOTE

Think of github but for hardware design. (PCB and sch design). Our mission is to bring the same modern workflows that revolutionized software: version control, automation, and collaboration to the hardware world. We are also introducing AI to hardware design!

Our stack.

• Python for actions scripts/plugins.

• Gitea application soft fork.

• Go [server-side].

• Vue/TypeScript Front-end.

• GitHub actions for CI/CD.

• Docker Swarm & Terraform for deployment.

• AWS.

• Postgres DB.

• Rust - backend utility functions.

Current openings:

• Principal Software Engineer (Parsing)

• Sr. / Principal Software Engineer (GenAI)

• Senior Fullstack Engineer (Actions)

• Principal / Lead Fullstack Engineer (Actions)

Apply: https://www.allspice.io/careers

thelab | New York, NY (Hybrid) | Senior Backend Developer | https://thelab.co | Full-Time | $160-165K + benefits

We're a digital agency focused on e-commerce, marketing, creative production and increasingly, AI-powered workflows to make our own teams more productive. We're hiring a senior backend developer to lead a greenfield ML/NLP project building workflow automations across image production, design, analytics/performance reporting and more.

You'll work on a growing team on the technical side with—with access to talent in every department as we build tools to support our internal processes.

Stack: Typescript, Python, Django, Node, Docker, Kubernetes, AWS, Terraform

Apply: https://thelabnyc.bamboohr.com/careers/189?source=aWQ9Mjk%3D

Range Finance | Mclean, Virginia - On-site | Software Engineers (Senior/Staff/Principal) | Full-time https://www.range.com/public/careers

We're building the first AI wealth platform. Hiring senior+ software engineers to partner closely with our co-founders and engineering leadership team. We're a Series C company with ~90 people passionate about making wealth management better, faster, and cheaper for every household. We're open to relocating candidates. Email me (tyler at range dot com) your LinkedIn profile if you have strong technical experience and you're interested!

Stack: Claude, Node, GraphQL, React, Typescript, AWS Comp: $150 - 300k base + equity

Rivet | Fullstack engineer | Remote (US) | https://rivet.app

Your favorite artist is on Rivet. Chance the Rapper, Major Lazer, John Legend, and more engage their fans with our AI marketing platform. We boost D2C revenue for brand and creator teams by growing their communities and powering their direct-to-fan marketing and sales across all channels.

I'm one of two founding engineers, and we're expanding to an eng team of three. We're looking for scrappy and adaptable fullstack devs with demonstrated early-stage startup experience. Our main web app stack includes Express / React on Typescript, Postgres, hosted on AWS.

We're pre-seed, VC-backed, and have gone from pre-revenue to profitable in the past 2 years. If interested, apply here and mention Hacker News! https://rivetapp.notion.site/Full-Stack-Engineer-29cddd02b55...

Location: San Francisco, CA

Remote: OK

Willing to Relocate: No

Programming Languages: Ruby, Scala, Javascript, Python, TypeScript, Haskell, Scheme

Programming Strengths: Data Structures and Algorithms, Data Engineering, Programming Language Theory, Type Theory, No-Code, AI&Prompt Engineering, Complex & Unusual Domains (Healthcare, Fintech, Music, Arts, Sciences)

Frameworks, Databases & Tools: Vue, React, Rails, Flask, Postgres, HBase, MongoDB, Kafka, Jenkins, AWS, Docker

Other Skills: Leading Teams & Managing Projects, Productizing LLMs, Managing Interview Pipelines, Architecting & Implementing Greenfield Solutions, Education & Team Growth, Leading Communication and Coordination Between Stakeholders Across Teams and Organizational Silos

CV: Available Upon Request

Email: poetic.artifice@gmail.com

I am a seasoned (>15 years experience) full-stack staff-level software engineer specializing in the backend, systems architecture, AI, platform engineering, internal tools, prototyping, and data engineering. In addition to strong programming and architectural skills, I'm a force multiplier for any team in either role through the three T's -- teaching, talking, and tooling. I also hold a US patent in the AI space.

In the past, I've taught a number of scientists and students to code in python; I've led and managed a number of high-impact engineering teams of up to 12; and pioneered a number of no- and low-code solutions for stream processing, data model and query generation, form building, workflow systems, and front-end construction for a variety of industries, including those with strong regulatory requirements and complex business rules such as healthcare and fintech. >10% of all medicare applications and millions of individuals currently flow through pioneering no-code systems I conceived and built and have ran in production for over a decade.

More recently, I've built a no-code automated form-filler; a no-code web scraper (and an AI for generating such scrapers from a spec and 1-3 example urls from a page); and a workflow engine for coordinating LLMs and other generative AI processes, and on top of this a platform for both minimizing hallucinations and working with documents that are far too large for existing context window inputs or outputs using a novel, patented process that I invented; and applied these tools to various contracted projects requiring analysis and and cross-checking of information and other forms of integrity across textual and video/audio corpus data in a variety of domains (fiction and non-fiction).

I am also an improvisational pianist, published poet, and I've created novel algorithms and tools for studying and composing both music and poetry, which I have given a talk on at a recent functional programming conference.

I have extensive experience working for and running startups, software consulting shops, with some mid-sized company engineering experience as well; these give me a unique insight into speaking with customers and internal stake-holders, translating between engineering and other departments, gathering requirements, aligning stake-holders across departments on a vision and attainable timeline, and architecting/building/taking ownership over significant internal and customer-facing areas of responsibility.

If any of the above seems like a match for you and your organization or project, don't hesitate to reach out. I am available for both full-time positions and short- and long-term contracts.

Lightning AI | lightning.ai | Senior Engineers (Full-stack, Backend, ML Platform) | NYC & SF | HYBRID / ONSITE | Full-time

Lightning AI (the creators of PyTorch Lightning) is building the OS for AI. We provide a unified platform to build, train, and deploy models and applications without the infrastructure headache.

We are looking for Senior Engineers across Full-stack, Frontend, Backend, and ML/Inference Platform teams for our NYC and SF hubs. We operate with high autonomy—no hand-holding, just high-ownership engineering.

The Stack:

Languages: Go, Python, TypeScript, React.

Data/Infra: Postgres, Kubernetes (K8s), AWS, GCP.

The Profile:

Seniority: Significant experience scaling production systems and distributed architectures.

Execution: You thrive in a "0 to 1" environment and prefer biased-towards-action, deep technical work.

Impact: You’ll build the systems that allow developers to deploy AI applications at scale.

Please directly apply here: https://lightning.ai/careers

https://job-boards.greenhouse.io/lightningai?keyword=softwar...

Note: Must be willing to work at least 2 days in-office at our New York City or San Francisco locations.

HelloData (Grace Hill) | Principal Product Engineer, Principal ML Engineer | Remote (US Only) | Full-Time | $175K–$250K + Bonus | https://www.hellodata.ai

HelloData is an automated market analysis platform for multifamily real estate. We process daily data from hundreds of thousands of property websites to power pricing intelligence and investment decisions. Acquired by Grace Hill in 2025, we've grown ARR 300%+ while keeping startup pace.

We're hiring two principal-level roles:

*Principal Product Engineer* — Full-stack architect who owns features end-to-end, from database schemas and cloud infra to polished UI. Technical anchor for the engineering team, bridging product strategy and shipping code. Expert-level Node/TypeScript, Vue 3 (Options API), PostgreSQL, GCP. 5-10 yrs experience, startup background preferred.

*Principal ML Engineer* — Owns the full ML lifecycle, from designing statistical models and algorithms to shipping them in production at scale. Partners with product and engineering to architect data foundations for every new feature. Expert Python, PyTorch, deep learning (fine-tuning Transformers, custom training loops), PostgreSQL/BigQuery, GCP MLOps. MS + 5-10 yrs ML experience.

Stack: TypeScript, Node.js, Vue 3, PostgreSQL, BigQuery, Python, PyTorch, GCP.

Compensation: $175K–$250K + bonus + health/dental/vision/401K

Interested? Apply at: - https://gracehill.applytojob.com/apply/UhAMjCzQvr/Principal-... - https://gracehill.applytojob.com/apply/i8qyIhJvJ6/Principal-...

Notes: US-based only, no visa sponsorship. We sync on Central Time.

Kinelo | kinelo.com | Full-Stack Engineer (AI + Backend) | San Francisco | Onsite

Kinelo manages the new type of hybrid team that will emerge in the future: humans+AI working shoulder-to-“shoulder”.

Our first product helps human software engineering teams deliver more efficiently and more reliably by assisting in coordination and engineering management. But it’s built on a foundational layer that ingests data, knowledge, and process across communications and systems, exposing that to humans and AI alike.

Eventually, Kinelo will become a proper human+AI orchestration layer, managing entire companies, and our goal is to have Kinelo run Kinelo (we already dogfood it today).

We’re looking for high ownership individuals to join our small team and shape its direction. We also just opened a new SF office and new hires will have the ability to help shape company culture, engineering practices, architecture, and roadmap.

We’re well-funded (just raised another round), founded by a serial founder, anti-bureaucratic, and highly technical.

We’re looking for:

- Those who want to go 0 to 1 with high ownership: moving features and products from idea on a napkin, to prototype, to engineering UI, to shipped and polished product

- ~8 years professional experience, including the pre-LLM days with strong CS fundamentals

- A balance of wisdom from experience and optimism about the future

- Strong TypeScript and Postgres (or other RDBMS) experience at scale and with high reliability (SaaS apps, APIs, etc)

- Experience with a variety of technologies, including containerization, distributed systems, and at least one strongly typed programming language (Go, C++, Java, etc)

- Ideally experience with ML and AI systems (though expertise in ML, data science, etc is not needed for this role)

We can’t sponsor visas but relocation assistance to SF is possible.

Please apply here: https://job-boards.greenhouse.io/kinelo/jobs/4088659009 and also email jobs@kinelo.com, mentioning this post.

Mainstay | Senior/Staff Software Engineer (Full-stack) | Remote (US) | Full-time

Mainstay is a market intelligence platform for large real-estate operators. We’re an AI-native company focused on turning complex, messy, real-world data into systems customers actually trust to make financial decisions. Mainstay was incubated at Opendoor, spun out in 2024, and recently raised a Series A led by Khosla Ventures.

We’re hiring a Senior/Staff Software Engineers, but we care more about ownership and judgment than title.

You'll work on:

- Designing and evolving foundational data models used across the platform

- Building backend services, workflows, and automation systems end-to-end

- Applying AI/LLMs pragmatically (automation, reasoning over messy inputs, decision support)

- Shipping user-facing product features tied directly to real customer workflows

- Owning problems from idea → production → iteration

Stack: Python, TypeScript, React, AWS

Check out the roles at: https://www.mainstay.com/careers

Chestnut | Hiring Senior / Staff Software Engineers | SF + Seattle (Hybrid) | https://jobs.ashbyhq.com/Chestnut

Chestnut builds software insurance carriers actually run their business on. We replace legacy, manual distribution systems with real-time data, automated workflows, and AI-driven tooling in a space that hasn’t changed much in decades.

This is product engineering. We ship to real customers, operate what we build, and spend time fixing the sharp edges that show up in production.

You’d work on backend-heavy product features around onboarding, compliance, payouts, and integrations. A representative problem: building a commission payout flow that ingests messy carrier data, applies complex rules and hierarchies, explains results to ops, and executes payouts that must reconcile cleanly with finance—while handling holds, chargebacks, retries, and partial failures.

Stack: Go, TypeScript/React, Postgres, Temporal, Kubernetes, AWS, LLM tooling.

Roles:

- Senior Software Engineer – Product / Backend (https://jobs.ashbyhq.com/Chestnut/fbbb7601-3d31-48b4-8639-75...)

- Staff Software Engineer – Architecture & Scale (https://jobs.ashbyhq.com/Chestnut/f28c5ee5-12aa-4e7b-b0ea-f5...)

- Engineer – Agent Orchestration & Workflow Systems (https://jobs.ashbyhq.com/Chestnut/075a0010-bfa5-489e-8808-e9...)

Hybrid in SF and Seattle.

Questions or want to sanity-check fit: nick [at] chestnut [dot] com

Cogram | Full-time | Remote (CET ±3) | https://cogram.com | B2B Saas / AI for AEC

Cogram is an AI platform for the architecture, engineering, and construction industry. We automate project admin such as RFIs & submittals, email filing, field notes, meeting minutes, and reporting. World-leading architecture and engineering firms have adopted Cogram at scale. We're backed by YC and Initialized.

We're looking for product engineers that ship high-quality software and are good at talking to users and understanding requirements. You're comfortable across the stack and own features end-to-end. A strong sense for good UI/UX is required. Experience in 3D modeling / CAD / BIM is a big plus.

Stack: Python (FastAPI), Postgres, Redis, React/TypeScript, React Native/Expo, Terraform/Kubernetes on AWS & Azure. Fully remote, three off-sites/year, ~38 paid days off, competitive salary + equity.

Apply: r+hiring[at]cogram[dot]com with GitHub/LinkedIn/portfolio and a short note, including your current agentic-coding setup.

Chroma | ONSITE - San Francisco | Full-time | https://trychroma.com

Chroma is the open-source search database for AI applications. It supports dense vector, sparse vector, regex, and full-text search. We support local, single-node, and cloud hosting.

We're a team of 14, all engineers today. We work in Rust, Python, Typescript, and Go.

We're hiring for these areas:

- Account executive (founding)

- Database storage engineer

- Distributed systems engineer

- Platform engineer

- Product engineer

- Product designer

Learn more and apply here: https://www.trychroma.com/careers

Featurebase | Full-stack Product Engineer | REMOTE (EU) | Full-time

Modern customers support & product feedback platform powering thousands of teams, including Lovable, Raycast, and n8n. Fully bootstrapped, profitable, and growing fast.

We’re building a full customer-facing suite where teams can handle their customer support, feedback prioritization, and product updates - all in one place.

We’re looking for a full-stack product engineer to own and ship core product features end-to-end, with a direct impact on Featurebase’s future.

Stack: NextJS + Typescript for the frontend, Node.js for the backend, MongoDB, Redis.

If you like small teams, autonomy, and shipping meaningful product work, we’d love to have you on board!

Apply here (we read every submission): https://go.featurebase.app/careers

OmniAI (YC W24) | https://getomni.ai | Full Stack Engineers | SF In-Person | Full Time | $125k–$175k • 0.50%–1.50%

Tech stack: TypeScript | Node | React/Next.js | Postgres | Docker | K8s | LLMs

We’re building the AI-powered infrastructure layer for small-business lending. Banks and fintechs use Omni to automate document collection, financial modeling, public-record research, and ongoing borrower communication.

You’ll work on:

1. Wrangling messy PDFs into usable data (we built a major open-source extraction library: https://github.com/getomni-ai/zerox)

2. Aggregating millions of datapoints from 50+ public sources (UCCs, liens, licenses, tax records) + credit/KYC/AML data

3. Building real-time financial models that combine OCR, LLMs, and rule-based systems into predictable outputs

We’re early, you’ll have a huge impact. Email me (my name at the URL) or apply here: https://www.ycombinator.com/companies/omniai/jobs/Dr0GIaE-fu...

Mobasi | Founding Engineer | Austin, TX / Remote | $240k + Profit Sharing | https://mobasi.ai

Mobasi builds autonomous AI agents for digital forensics. Our software orchestrates 150+ forensic tools to help law enforcement turn days of manual evidence analysis into minutes, aiding in cases involving child exploitation, trafficking, and homicide. We are bootstrapped, profitable, and shipping fast.

We are looking for our first hire outside the three co-founders to own infrastructure, DevOps, and compliance. You will transition our build pipeline from manual updates to an automated delivery system scaling to thousands of agencies. You will manage infrastructure across AWS, GCP, Azure, and AI providers, while owning CJIS and SOC2 compliance.

Tech Stack: Rust, TypeScript, Python, Tauri, Next.js, Docker, Pulumi, Terraform.

We work as a small SWAT team. We are AI-native and expect you to use tools like Cursor and Claude to ship significantly faster. We do not have sprints or daily standups. Instead of lottery-ticket equity, we offer a high base salary and direct profit sharing.

Apply here: https://jobs.ashbyhq.com/mobasi/b385d2bb-d338-44cc-8728-f0eb...