Regal.ai | Sr. Software Engineer | NYC Hybrid | Full-Time | https://www.regal.ai/

Regal is the AI Agent Platform — we power millions of outbound/inbound calls, SMS, and email interactions for enterprise customers like Google, AAA, and Coursera. $82M raised, $7B in revenue driven for customers, 250M+ calls completed.

We're hiring a Senior SWE to own backend systems end-to-end. You'll directly contribute to our voice agent infrastructure, build tooling to evaluate agents via simulations and enhanced observability, and ship cutting-edge AI features fast to large, active user bases.

5-12+ years of experience with production web-scale platforms. Python expertise required. AI/LLM experience a big plus.

Stack: Python, TypeScript/Node.js, React, NestJS, GraphQL, Postgres, Redis, Kinesis, DynamoDB, AWS

Apply: https://jobs.lever.co/regalvoice/c8d4f421-4c8d-43b9-ae6d-16d...

Happy to answer questions here.

SuppMatch | CTO | Warsaw, Poland | Hybrid + International Travel | USD 85K–102K + Equity

SuppMatch is an AI-powered supplement recommendation engine for e-commerce platforms. We integrate into online supplement retailers, pharmacies, and marketplaces to deliver ultra-personalized, science-backed recommendations in real time. Think of it as the AI intelligence layer for the global supplements market.

Stack: Python, TypeScript, React Native, Node.js, GraphQL. AI/ML: LLMs, NLP, vector databases (Pinecone/Weaviate), PyTorch, TensorFlow, Hugging Face, LangChain. Infra: AWS/GCP, Docker, Kubernetes, CI/CD. E-commerce integrations: Shopify, PrestaShop, Magento, custom.

This is a startup CTO role. You'll own the full technical vision; architecture, AI engine, data pipelines, integrations, team, while still pushing code and joining partner calls. We're live in production, in active commercial conversations across 8+ markets (Poland, Germany, UK, Italy, Austria, Czech Republic, USA), and closing a seed round.

Requirements: Polish & English fluency. Warsaw-based (hybrid). Hands-on experience with AI/ML in production. Previous CTO / VP Eng / founding technical lead at a fast-growing startup.

jacob@suppmatch.ai | https://suppmatch.ai

SuppMatch | CTO | Warsaw, Poland | Hybrid + International Travel | USD 85K–102K + Equity

SuppMatch is an AI-powered supplement recommendation engine for e-commerce platforms. We integrate into online supplement retailers, pharmacies, and marketplaces to deliver ultra-personalized, science-backed recommendations in real time. Think of it as the AI intelligence layer for the global supplements market.

Stack: Python, TypeScript, React Native, Node.js, GraphQL. AI/ML: LLMs, NLP, vector databases (Pinecone/Weaviate), PyTorch, TensorFlow, Hugging Face, LangChain. Infra: AWS/GCP, Docker, Kubernetes, CI/CD. E-commerce integrations: Shopify, PrestaShop, Magento, custom.

This is a startup CTO role. You'll own the full technical vision; architecture, AI engine, data pipelines, integrations, team, while still pushing code and joining partner calls. We're live in production, in active commercial conversations across 8+ markets (Poland, Germany, UK, Italy, Austria, Czech Republic, USA), and closing a seed round.

Requirements: Polish & English fluency. Warsaw-based (hybrid). Hands-on experience with AI/ML in production. Previous CTO / VP Eng / founding technical lead at a fast-growing startup.

jacob@suppmatch.ai | https://suppmatch.ai

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

Confido Legal | Security Engineer (Senior Software Engineer – Security) | Remote (US) | Full-time

Confido Legal is a fintech platform that helps legal tech companies and law firms embed payments and finance features into their products. Security and trust are foundational to our mission.

We’re hiring a senior software engineer to join our core engineering team and own security across the platform. This is not a standalone security department role. You’ll remain an active contributor to the product—writing code, reviewing PRs, shaping architecture—while serving as the team’s point person on security.

You’ll lead PCI DSS Level 1 and SOC 2 compliance, drive secure-by-default architecture, harden our AWS infrastructure, reduce vulnerability noise, and embed security into every stage of our product lifecycle. You’ll also participate in customer security reviews and incident response alongside engineering leadership.

Stack: TypeScript, React, Next.js, GraphQL, AWS (Pulumi IaC), Docker, ECS.

We’re a small, high-ownership engineering team where engineers lead domains (security, underwriting, growth) while continuing to build product daily. If you’ve “seen this movie before” securing real SaaS systems and want meaningful ownership without leaving engineering, we’d love to talk.

$175k–$225k. Fully remote (US).

Full Job Posting: https://confidolegal.com/about

Apply: https://confidolegal.com/security-engineer?hsCtaAttrib=31427...

Newbuilds | Remote Senior Ruby on Rails Developer | Remote (Europe) | Full-time

Newbuilds is hiring a Senior Ruby on Rails Developer to help scale a widely used proptech marketing platform, a Norway-based proptech company powering automated campaigns and data-driven workflows across 17+ countries.

You’ll work on backend architecture, improve performance and scalability, build integrations with external APIs/CRMs, and influence technical direction with ownership over your code. This role is remote-first with flexible work and competitive senior-level compensation.

Remote (EU timezone friendly) | We work via B2B, or employment in Norway or Germany

Modern stack: PostgreSQL, Sidekiq, RabbitMQ, AWS, Docker, GraphQL

Join a low-ego engineering team with real product impact

Apply or share with someone who’d love working on complex backend challenges: https://careers.staffer.ai/jobs/7247377-remote-senior-ruby-o...

CodSpeed | Multiple Positions | On-site (Paris) / Remote (Europe) | Full-time | https://codspeed.io

We’re building the continuous performance optimization platform. We help engineering teams catch performance regressions before they ship, with sub-1% measurement variance. We’re already trusted by teams at Cloudflare, Vercel, Mozilla, Pydantic, and Astral (Ruff, uv).

We’re a small, deeply technical team looking for engineers who want real ownership and the chance to ship end-to-end. Competitive salary, stock options, generous PTO.

Senior Systems Engineer: CPU simulation tooling, language runtime internals (CPython, V8), kernel I/O emulation. C/C++/Rust/Zig.

Senior Full-stack Engineer: React/Next.js, Node.js/TypeScript/GraphQL, GitHub/GitLab integrations, Rust data pipelines.

Senior/Lead AI Engineer: Agent layer, eval methodology, context pipelines, model selection. Python/FastAPI.

Graphic/UI Designer: Visual identity and product experience for a developer tool.

More details at https://careers.codspeed.io. Apply at careers@codspeed.io

akeno | Senior/Staff Fullstack Engineer, DevOps Engineer, Applied Research Engineer | Full Time | ONSITE (hybrid) | Hamburg, Germany

At akeno, we help chemical manufactures optimise the production planning in their giant factories. Think asset utilisation, giant dependency graphs, adapting to real-time data, critical processes, a highly complex domain, and scenarios where even squeezing out 1% of extra utilisation can easily save our customers millions.

We're currently looking for 1x Senior/Staff Fullstack Engineer (Typescript, PostgreSQL, React, GraphQL/Hasura, TailwindCSS, Docker), 1x Senior/Staff DevOps Engineer (Kubernetes, Terraform, Observability, multi-environment management, …), and 1x Senior Applied Research Engineer (Python, ML/AI, optimisation) to extend our teams.

You'll need to bring real world experience from designing and running systems that really matter, a true "full stack" mentality (from UX deep down into the DB), team-spirit, and have worked in the EU before. We'll provide: Colleagues who are not only highly competent but you'll actually enjoy working with, 3-2 onsite/home-office model, great office in the heart of beautiful Hamburg, latest Macbook, excellent e2e/integration testing setup, pseudomised customer DB dumps for realistic development data, completely cloud-agnostic, "airplane mode" (you can spin up a full dev environment locally and without internet!), Open Telemetry, and more.

For more info: https://www.akeno.ai/careers and https://www.akeno.ai/tech-radar

Level | Senior Frontend Engineer | REMOTE (US + international with US-ET overlap) | https://level.io

Level builds a modern Remote Monitoring & Management (RMM) platform for IT teams and Managed Service Providers. We help IT professionals monitor devices, automate workflows, remotely support users, and leverage AI to operate more efficiently.

We’re hiring a Senior Frontend Engineer to help us ship faster, including many features requested by our community.

You’ll work on real-time device management interfaces, remote control (WebRTC), visual automation workflows, and UI for AI-powered features. Strong experience with TypeScript, React, Next.js, and GraphQL preferred.

We are actively filling this role and will respond to applicants.

Details and how to apply: https://level.io/careers/senior-frontend-engineer

Ashby | YC 19 | REMOTE (Americas + EMEA) | Senior/Staff+ Product, Platform & Design Engineers | Hands On Engineering Managers |

Ashby is the all-in-one recruiting platform powering hiring at the world’s most innovative companies. If you cmd+f “Ashby”, you’ll see that we’re powering many of job postings in this thread!

* Grew our engineering team from 30 -> 60 last year with plans to double again in 2026.

* Our team is almost exclusively Senior/Staff+ as we give a usual amount of ownership to our engineers to build features end-to-end. Many of our most loved features were built entirely by a single engineer!

* Full transparency on levels + comp: https://www.ashbyhq.com/blog/engineering/leveling-and-compen...

* We try to write very detailed job postings. For example, here’s our Staff Product Eng role: https://www.ashbyhq.com/careers?ashby_jid=6a15668c-3f98-4404...

* Full list of open roles: https://www.ashbyhq.com/careers

Stack: TypeScript (frontend & backend), React, GraphQL API, Node.js, Postgres, Redis.

Buildforce (https://www.buildforce.com) | Staff Product Engineer | Austin, TX (Onsite/Hybrid)

Buildforce is a skilled trade staffing marketplace facilitating connections between subcontractors and tradespeople.

Our products include a mobile app (RN), a NextJS app, and a GraphQL/Typescript API. We've been around for 5 years and we have a Product & Eng org of 5 including myself. We're well-funded and business is going great.

We're looking to add 1 more senior/staff member to the team. We are a product-minded group of engineers, and startup experience a huge plus.

You'll be in-office for at least a couple days a week, WFH the rest.

mark [at] buildforce [dot] com

Strobe | Senior Infrastructure & Data Integration Engineer | Brooklyn, NYC | ONSITE | Full-time

Strobe is building the world's largest power plant — not a single site, but a distributed fleet of buildings, batteries, EVs, and generators buying and selling power in real time across wholesale energy markets.

We need a software engineer to take ownership of our data integration and cloud infrastructure layer — the connective tissue between utilities, grid operators, OEM hardware, weather services, and our energy optimization engine.

What you'd own:

- Wholesale market integrations (NYISO, CAISO, ERCOT) — real-time pricing, capacity markets, demand response signals - OEM hardware integrations — API and data bridges to building equipment manufacturers for monitoring, control, and telemetry - Green Button Connect pipelines — ingesting interval consumption, billing, and meter data from utilities (ConEd, PG&E, SCE, etc.) via OAuth2 + ESPI - Weather and solar forecast data pipelines - Utility bill reproduction engine — modeling site economics before and after Strobe to forecast financial impact across dozens of rate structures. This simulation infrastructure is core to how we sell and deliver value. - Event-driven AWS infrastructure (Lambda, API Gateway, AppSync/GraphQL, EventBridge, IoT Core, TimeStream, Amplify, CloudWatch) - Terraform IaC — real module design, remote state, multi-workspace patterns - Observability and alerting on systems where downtime means missed market events and real dollars

Strong fit if you have:

- Deep AWS experience (IAM, Lambda, API Gateway, AppSync, EventBridge, TimeStream or similar TSDB) - Production Terraform (modules, remote state, multi-workspace patterns) - Extensive Python (pydantic for models, click for CLIs, boto3 for AWS, async pipelines) - Experience integrating messy third-party APIs at scale (utilities, government, energy, OEMs) - Comfort with on-call for systems that control physical hardware and move real money

Stack: monorepo (heavily AI-agent-optimized) / Python / TypeScript / Rust / Terraform / AWS.

Small team (<10), high ownership, no layers. 5 days/week onsite at Newlab, Brooklyn Navy Yard.

eric@strobepower.com (mention HN) — LinkedIn or resume (PDF preferred).

Silkline | Senior Software Engineer | Seattle | ONSITE (5 days/week) | $175k-$225k + equity | https://silkline.ai

Modern hardware supply chains run on spreadsheets, email, and PDFs. It's like fax woke up in 2025. We're fixing this with an AI-first procurement platform for aerospace, defense, and nuclear manufacturing.

Our customers: Machina Labs, Astranis, K2 Space, Castelion, Antares, and more. They use us to manage suppliers, track $M+ in orders, automate RFQs, and stay ITAR-compliant. Every day of production delay costs $50k+—our platform keeps them moving.

The role: Own features end-to-end, build ERP integrations that sync POs and manufacturing data, real-time order tracking dashboards, and a user experience that people LOVE. Work directly with customers whose supply chains depend on what you ship.

Stack: TypeScript, React, Next.js, Hasura (GraphQL), PostgreSQL, Trigger.dev, AWS GovCloud, Pulumi, Elbow grease.

You: 5+ years shipping production systems, strong full-stack or frontend generalist who moves fast, thrive on customer feedback and direct impact, bonus: ERP integrations, B2B SaaS, or regulated industries

Traction: 5x'd customer count last year, $5M funding to date, landing massive defense/space logos. Small team shipping incredibly fast—you'll work directly with our founders (Isaac and myself).

Apply: https://jobs.gem.com/silkline/am9icG9zdDrLwsEQTKKa02Ut_F9kgz... Questions? brent@silkline.ai (mention HN)

River | Senior + Staff Engineers (Elixir, React, ML/AI) | SF or NYC or REMOTE (US, Europe, South America) | Full-Time | $150K-$250K + equity | https://jobs.ashbyhq.com/river

I'm Alex, founder and CEO of River. I also wrote the first line of code and still ship PRs.

River is a client-first Bitcoin-only financial institution building the financial app people use every day to save in bitcoin and spend in dollars. We custody over 25,000 BTC, serve individuals and businesses across the U.S., and are profitable. We publish cryptographic proof of reserves monthly and our company financials annually.

Here's what our engineering team is working on:

  - Real-time Bitcoin and USD payments, trading, and settlement on an Elixir monolith with a unified GraphQL API
  - Next-generation Bitcoin custody with quorum signing, key ceremonies, and geo-redundant infrastructure
  - Scaling our ML/AI systems (Python, PyTorch, XGBoost, LLMs) to automate operations and tackle fraud/risk
  - A ground-up React and React Native rewrite of our consumer app
  - Porting our Lightning Network infrastructure from Go into Elixir

We're hiring:

  - Senior Software Engineer (React, Full-stack) | $150K-$220K
  - Staff Software Engineer (Elixir) | $200K-$250K
  - Staff Software Engineer (ML/AI) | $200K-$250K

Apply at https://jobs.ashbyhq.com/river?utm_source=Zp9nJyqvd4 or email me at alex@river.com and mention HN.