Shinzo (https://shinzo.network)| USA/Canada + REMOTE | Multiple Full-Time Roles

We're building the read layer for blockchains. The irony of "trustless" applications depending on centralized indexers like Alchemy or The Graph isn't lost on us—we're fixing it.

Shinzo embeds indexing directly into validators, turning blockchain data into a cryptographically verifiable public good. No trusted intermediaries, no API keys, no "please don't rate limit me" prayers at 2am.

Stack: Go, Rust, WebAssembly, Merkle CRDTs, recursive SNARKs, LibP2P, GraphQL, Cosmos SDK/EVM

Hiring:

-DX Engineer - Indexer Migration - https://bit.ly/3YBwhBn

-Senior Blockchain Indexer Engineer - https://bit.ly/4sHQkLY

-Senior Cross-Chain Smart Contract Engineer - https://bit.ly/49BzJAN

-Protocol Engineer - Blockchain - https://bit.ly/4sDRica

We're pre-mainnet with real technical differentiation—not another "decentralized" project that's actually three EC2 instances in a trench coat. If you've ever been mass-migrated off a deprecated API endpoint or debugged why your subgraph stopped syncing, you understand the problem we're solving. We care more about what you can build than where you went to school.

Instinct Science | Sr. Full-Stack Engineer | REMOTE (US)

Instinct is building AI-forward SaaS products that serve the veterinary world. We are growing our talented Engineering team and looking for people who thrive with autonomy and want to solve hard problems.

Stack: Elixir, React, AWS, GraphQL

Learn more and apply: https://instinctscience.applytojob.com/apply/1H156iuuzg/Seni...

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.

Sequent Tech | Senior Fullstack Engineer, Senior DevOps Engineer | REMOTE (Global) | Full-time | sequentech.io

Sequent builds cryptographically secure online voting infrastructure used in 200+ real elections across multiple countries. We're a fully remote team working on an open-source platform combining Rust, TypeScript, and modern DevOps. We handle End-to-end encrypted voting, cryptographic mixnets, and tamper-evident logging.

Tech Stack: Rust, TypeScript/React, WebAssembly, GraphQL, PostgreSQL, Kubernetes, Keycloak, ImmuDB

Open Roles:

Senior Fullstack Engineer (Rust + TypeScript/React) Senior DevOps Engineer (Kubernetes, Infrastructure as Code)

Reach out: team@sequentech.io

Silkline | Senior Software Engineer | Seattle | ONSITE (5 days/week) | $150k-$220k + 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)

ToucanTix | Lead Engineer | Berlin/REMOTE (EU) | Rails | €60k-€90k

We're the ticketing platform behind major theme parks, zoos, and experience villages across Germany and the USA. Spin-off from COMBASE AG focusing on leisure/culture.

The situation: 2-engineer team building on COMBASE's platform. We handle online ticketing, visitor management, capacity control. CSO just joined from major competitor, closing enterprise deals. We're staying lean using AI tools to compete with larger competitors.

Technical challenges: - Multi-tenant booking with venue-specific business logic (pricing rules, capacity, timed entry) - Real-time capacity management across access zones - Integration with COMBASE platform - Making AI-augmented development work in production

The role: Lead engineer working with founder. Own features E2E, architecture decisions, full-stack but backend-heavy.

You fit if: - 3+ years shipping production code - Excited by small teams doing more with AI - Prefer ownership over structure - Rails or quick to learn

Stack: Rails, Svelte, PostgreSQL, GraphQL, GCP

Perks: Remote (occasional Berlin meetups), MacBook + home office, free attraction admission, stable backing (COMBASE: 80+ people, 3 decades)

Apply: jobs@toucantix.com Include: CV/LinkedIn, a technical challenge you're proud of, why this interests you, favorite attraction. in subject.

https://www.toucantix.com/careers/lead-engineer

Support Engineer | Remote | FinTech | Open Source | Startup

Hi there. We are Interledger Foundation and are looking for an experienced Support Engineer (5+ years) who can build the entire support function for our Wallet from the ground up. This is a contractor position, initially. USD 6700/month. Please send your resume and brief motivation to hr@interledger.org

Basic requirements: Understanding of web and mobile applications Comfortable troubleshooting using logs, metrics, and system behavior Ability to operate autonomously and make pragmatic operational decisions

Nice to Haves: Experience supporting financial infrastructure or cross-border payment systems Prior experience in open-source or nonprofit environments Knowledge of APIs (REST, GraphQL, gRPC) Experience defining on-call rotations and incident response frameworks Familiarity with CI/CD, monitoring, and observability tools Experience with distributed scaling or remote support teams

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

RepSpark | Engineering & Product | REMOTE (US) | Full-Time | https://www.repspark.com

RepSpark is the top SaaS B2B wholesale e-commerce platform for brands in apparel, footwear, and accessories. For example, we're how golf courses across North America and Europe purchase brands like Titleist, Peter Millar, Kjus, etc.

Stack: C#/.NET (Rider on macOS), GraphQL, React, TypeScript, PostgreSQL, AWS (CDK).

We're actively hiring:

* Junior/Senior/Staff Product Engineers (Full-Stack): Own outcomes across React/TS + C#/.NET + Postgres; help modernize legacy .NET Framework to .NET 8; build/scale ERP ETL & integrations. Open to all levels despite URL/title - https://www.repspark.com/senior-product-engineer-full-stack

Email careers@repspark.com with your resume and optionally GitHub/portfolio.

Caspian Trade, Inc. | Software Engineer | SF, Hybrid 3+ days a week | Full-time

We're simplifying global trade compliance and helping importers navigate the trade environment, starting with duty drawback—a tax recovery process that puts cash back into importers' hands. Our platform transforms messy trade data into actionable insights, helping businesses recover from the estimated $10B in unclaimed refunds each year.

- AI/ML document ingestion processing thousands of unstructured documents - Data modeling for the complexities of global trade - Matching optimization (think: the world's biggest matching problem) - Building integrations across ERPs, customs brokers, and the countless creative ways companies manage trade data

Node, NestJS, TypeScript, PostgreSQL, React, Relay/GraphQL, BullMQ/Redis, Nix

The team is small, growing and well funded with with real revenue + domain expertise. If you're a product-minded engineer excited about shepherding AI to an old industry, let's chat: ebeweber@meetcaspian.com

https://meetcaspian.notion.site/Sr-Software-Engineer-Caspian...

Strobe | Software Engineer | Brooklyn, NYC | ONSITE | Full-time | $120k–$250k + equity

We’re building a distributed, software-defined power plant: buildings, batteries, EVs, and on-site generation buying and selling power in real time. Think cloud control plane + embedded hardware + energy markets.

Small, high-performing team. No layers. You’ll own systems end-to-end: design → deploy → on-call.

We’re looking for *fungible generalists*, not narrow specialists. Strong fit if you’re comfortable with: - AWS-heavy backend work (Lambda, APIs, GraphQL, data pipelines) - Operating real-time production systems - Python / TypeScript (Rust a plus)

Depending on fit, you might work on: - Telemetry & control over unreliable networks - Embedded Linux / RTUs (Modbus, BACnet, DNP3) - Market-facing systems and optimization - Operator UIs with real-time streams (React)

Requirements: - Strong production experience - Systems mindset, bias to shipping - Willing to be onsite 5 days/week at Newlab (Brooklyn Navy Yard) - Not remote

Fast pace, direct feedback, real ownership. This is not a 9–5.

Email: eric@strobepower.com, cc keeley@strobepower.com (please mention HN)

Include your LinkedIn or resume as PDF.

Piq Energy | Full Stack Software Engineer | SF, Athens, or US REMOTE | Full-time | $150k-$250k + equity (SF; location-adjusted)

https://jobs.gem.com/piqenergy/am9icG9zdDp5j21vRWEpgIUq005H6...

Piq Energy builds software that helps renewable and large-load developers get projects connected to the electric grid faster. We automate grid interconnection studies and planning workflows.

You’ll own features end-to-end: interactive frontend, backend APIs, data pipelines, AI agents, and power systems simulation workflows. We’re looking for experienced generalists who like ownership, real-world impact, and scaling startups.

Stack: Typescript, Svelte, GraphQL, Mapbox, D3.js, Python, LLM agents, Postgres, workflow orchestration

Greenline | Founding Engineer: Backend + Data | Remote (U.S. only) | $175k–$225k base + equity (1.0–2.5%)

Seed-stage fintech (6 people) building automation for non-QM mortgages for self-employed borrowers. Revenue-generating, working with the largest lenders in the U.S.

ROLE: Senior or staff-level IC with extensive experience with database schema design, microservices, and backend infrastructure. This is an underdeveloped, messy area to shape and own. Resposibilities include core infrastructure, data pipeline + deduplication logic + failure recovery, and applied ML enablement. No people management, but for right person could evolve into leadership role.

STACK:

- Postgres DB accessible through a GraphQL API built with Hasura

- NextJS web application deployed to Vercel

- yarn workspace monorepo utilizing TypeScript

- Playwright + Jest testing with ~80% test coverage

==========================

APPLY: hello@greenline.ai (include LinkedIn, resume, GitHub/ GitLab, and 1-3 highlights you want the founding team to know about)

MORE INFO: https://www.greenline.ai/careers

Shepherd | ONSITE | San Francisco, CA

Shepherd is an all-in-one commercial insurance platform. We provide savings on insurance premiums for commercial businesses that are leveraging modern technology on their worksites. While we began with commercial construction, we've just expanded into adjacent sectors, like renewable energy & power!

We’ve raised over $20M and we’re looking for product-minded engineers to join us as we continue to scale! We’re looking for someone who thrives on ownership, drives results, and cares deeply about both technical excellence and customer impact.

We’re hiring for Senior & Staff-level Full Stack & Backend Engineers. We’re growing the engineering team from 20 to 40 this year. And we're also looking for two Product Managers!

* Full Stack - Job Posting: https://jobs.ashbyhq.com/shepherd/c4081c3d-a79b-4ac9-aa19-78...

* Backend - Job Posting: https://jobs.ashbyhq.com/shepherd/395f4b75-cf05-4581-8408-8f...

* Product Manager, Pricing - Job Posting: https://jobs.ashbyhq.com/shepherd/2c278fc5-82fd-4887-874a-2f...

* Product Manager, Servicing - Job Posting: https://jobs.ashbyhq.com/shepherd/041af02a-4d4e-4711-935f-ad...

Our stack includes: Typescript, React, Next.js, GraphQL w/ Apollo, Node.js, Postgres & Redis

Apply here: https://shepherdinsurance.com/careers

* In the form, be sure to mention that you heard about this opportunity via Hacker News.

If you want to read more about our team and culture, check out our blog: https://shepherdinsurance.com/blog