Woosmap | https://www.woosmap.com/ | Backend Engineer (Mid-level & Senior) | HYBRID (London, Paris, Montpellier) or REMOTE (UTC-1 to UTC+2) | Full-time

We run location APIs. Geocoding, routing, store locator, address autocomplete, etc. at enterprise scale. When a checkout page resolves your address, or a courier finds you first try: that's us.

Stack: Python, Go, Rust, TypeScript, Valkey, Postgres, OpenSearch, Docker, AWS, Datadog.

We are a small team, owning and driving complex solutions to production on a daily basis. We are looking for a good generalist to become an expert in a part of our stack. 1st PR ships to prod within a week, very little process and good team spirit!

Apply: https://www.linkedin.com/jobs/view/4410617739/

Stealth Startup | Founding Engineer | NYC (in-person 5x/week) | Full-Time

The mission We’re building a best-in-class multi-modal AI agent product (voice + SMS + email) with the potential to disrupt deeply entrenched software businesses and unify a fragmented industry. We’re a tiny team with real traction pre-product, moving fast, and we care obsessively about craft.

Why this role This is a founding engineering seat: you’ll be an early builder shaping the product, architecture, and quality bar from day one. In the first 3–6 months, the role is highly IC-focused. As we scale (including our first in-person hub/site and new hires), this role has optionality (i.e., growing into a leadership role or staying on the IC track and owning the engineering roadmap) for the right person.

What you’ll do

Build real-time systems for voice (streaming audio, low latency, turn-taking), SMS, and email automation with robust state + memory. Design the foundation: architecture, data model, reliability, observability, deployment, and developer velocity. Set the quality bar: clean code, pragmatic abstractions, testing strategy, “don’t break prod,” and thoughtful product UX. Partner closely with the co-founders on product decisions. You’ll have real influence over what we build and how it feels + how it's designed.

What we’re looking for You should be able to work anywhere in the stack (frontend, backend, infra, integrations) and you know how to make smart tradeoffs.

Strong product sense: you’re obsessive about confusing UI and you want to make workflows feel magical. Systems thinking: you can design for latency, reliability, and iteration speed (especially for real-time voice + agent state). High ownership: you run toward ambiguity, unblock yourself, and care deeply about outcomes. Startup mindset: high-risk/high-reward energy, low ego, high pace.

Bonus points:

Experience with agentic systems: LLM orchestration, tool calling, RAG, evals, prompt/versioning, guardrails. Voice/telephony or streaming experience (WebSockets/WebRTC, audio pipelines, turn detection). Messaging + deliverability experience (SMS workflows, email sending, compliance/opt-in, bounce handling). Familiarity with modern stacks (examples): TypeScript/Node, Python, React/Next.js, Postgres, Redis, queues, Docker, AWS/GCP, observability.

SalesJack | Solutions Engineer | Toronto, ON, Canada | HYBRID | FULL-TIME

SalesJack is a sales software platform (CRM, Prospecting Service) for independent businesses in the construction supply industry. We are growing quickly and profitably. Our engineering team is growing in Canada.

As a Solutions Engineer at SalesJack, you'll own the technical side of bringing new customers live and keeping them successful. Every implementation involves ERP integration, product category mapping, permit source configuration, data migration, and on-site training — and you'll be the person who makes all of that happen. Post-launch, you'll handle customizations: new reports, routing rules, data transformations, and one-off integrations. You'll work closely with founders, engineers, and the dealers using our product every day. We highly value a startup mentality—taking initiative, moving quickly, and iterating solutions based on real customer feedback.

We are looking for:

- 2+ years in a Solutions Engineering, Implementation Engineering, Data Engineering, or similarly hands-on technical customer-facing role

- Strong SQL — comfortable writing non-trivial queries against Snowflake, Postgres, or similar warehouses

- Comfort with REST APIs, auth flows, pagination, rate limits, and debugging flaky endpoints

- Familiarity with (or strong interest in) construction supply ERPs such as BisTrack, DMSi Agility, or ECI Spruce

- Some travel may be required to customer sites in the US

Our hiring process will be:

1. Initial call with our founding team to briefly discuss your background and introduce SalesJack ~30mins

2. Technical Exercise: SQL, integration design, and a customer scenario walkthrough ~1.5 hours

3. Cultural fit call with one of our founders ~30mins

4. Offer

Apply here and mention Hacker News: https://jobs.ashbyhq.com/salesjack/6feafb61-3049-4d76-ab84-1...

Location: Taiwan (UTC+8)

Remote: Remote (EU friendly, limited US/Canada hours)

Willing to relocate: No

Languages: Ruby, JavaScript (ES6+), TypeScript, HTML/CSS

Frameworks: Ruby on Rails, StimulusJS, Tailwind CSS, Bootstrap

Tools/DevOps: PostgreSQL, Git/GitHub, Gemini CLI, Heroku, Render, Railway

Résumé/CV: https://drive.google.com/file/d/11plS8evNAqPoN2hJdbR5izabKHM...

GitHub: https://github.com/yuhruh

LinkedIn: https://www.linkedin.com/in/yuruhuang/

Portfolio: https://pet-feeding-tracker-v4.up.railway.app

Email: yuhruhgrape@gmail.com

Hello, I'm Rita, a software Engineer with 5 years of experience building secure, maintainable, and data-driven web applications using Ruby on Rails, PostgreSQL, and Tailwind CSS. Specialized in transitioning complex legacy systems (Excel/Manual processes) into modern full-stack solutions with automated workflows and AI integration.

Looking for: Ruby on Rails Developer/ Fullstack Engineer/ Backend Engineer.

Steel | Applied AI Engineer + Infrastructure Engineer | Toronto, ON | ONSITE | $160k-$240k USD base + equity

Steel is open-source browser infrastructure for AI agents and apps. We make it easy for developers to ship products that interact with the web - without spending 80% of their time on browser pools, proxies, CAPTCHAs, and session state. In 2025 we grew 50x: 6,000+ GitHub stars, dozens of paying customers, millions of sessions served monthly. Dedicated chromium runs on Firecracker VMs for sub-second cold starts.

Stack: TypeScript, React/Next.js, Node.js, AWS, Firecracker, Postgres, Redis. 4+ YOE for both roles.

--- Applied AI Engineer ---

Shape how AI agents interact with the web. Build open-source frameworks/demos on the Sessions API, run experiments on which models/prompts/harnesses actually work, build evals against real scenarios, and work with customers shipping agents to production. AI-native full-stack engineers with strong product sense.

--- Infrastructure Engineer ---

Design and operate the systems Steel runs on. Sample projects: VM snapshotting that restores full browser state in under a second, performance-tuning the Sessions API from kernel traces, orchestrating millions of sessions with sub-second cold starts. Distributed-systems experience, strong AWS/GCP and Linux/OS fundamentals. Rust is a plus.

Public referral bonus: $10,000 if your intro becomes a hire.

Apply: email careers@steel.dev with GitHub & resume, mention HN.

Post Up | Full time | Senior Backend Engineer | Onsite | Vancouver, BC (Hybrid) | Salary: $120-$130k CAD | https://www.postup.pro

I'm Wilson, co-founder of Post Up. We're building the Databricks for content production. Our orchestration engine coordinates pipelines end to end and turns post-production workflows into a persistent graph of assets and transformations, which are deterministic, verifiable, and nearly instant at scale, powered by a high-performance compute layer.

We're building this AI-native from the ground up; ML inference is embedded throughout the pipeline, not bolted on.

Stack: On-prem, HPC clusters, distributed storage systems, GPU pipelines, real-time video compute.

We're looking for our founding senior backend engineer who wants to work on genuinely challenging infrastructure problems across distributed systems and media processing with immense scale. Should be familiar with Golang, Postgres, Distributed systems, Distributed filesystems (e.g. HDFS, Ceph, etc).

Me: https://www.linkedin.com/in/hayswilson/

How to apply: Email me directly at wilson@postup.pro or Submit here: https://www.notion.so/Founding-Senior-Backend-Engineer-31031...

Instinct Science (https://instinct.vet) | Multiple Roles | REMOTE (US) | Full-time

We're the AI platform for veterinary medicine — cloud-native EMR, AI scribing (ScribbleVet, acquired early 2026), clinical decision support, and Plumb's drug reference. Instinct is the operating system vet teams run their day on, from charting through clinical decisions to pharmacy. Real revenue, real PMF, scaling fast.

- Senior Full-Stack Engineer | $150–175k Elixir (+ Ash) / Postgres / TypeScript / React / AWS. Own features end-to-end. https://instinctscience.applytojob.com/apply/1H156iuuzg

- Senior Software Engineer, React Native | $150–175k Embedded in ScribbleVet. Mobile app vets use during live appointments — audio capture, offline, AI-assisted clinical workflows. Expo + GraphQL. https://instinctscience.applytojob.com/apply/4Yj4DavJ6D

- Product Manager | $120–150k Translate vet workflows into roadmap. 3+ yrs PM in early-stage SaaS. https://instinctscience.applytojob.com/apply/uU7QfJpdSf

Fully remote (US) but not async. Equity, full benefits, 401k match, annual retreat.

Reach out to vinnydidonato at instinct.vet with [HN] in the subject. Thanks!

Stream | Amsterdam (NL), Skopje (North Macedonia)| Remote possible | Full Time | Visa Sponsorship

We power real-time Chat, Video, Activity Feeds, and AI Moderation for apps like Strava, Bumble, eBay, and Patreon - billions of API requests per month, millions of concurrent users.

We're looking for a hands-on Lead Engineer (Staff / Principal level) to own Platform & Infrastructure.

Reports directly to the CTO.

Small, senior team - you'll write code most of the time, not run a process org. First 6 months focus on three things with measurable outcomes:

* Cloud cost optimization (AWS/GCP) — tooling and guardrails, not reports

* Platform reliability and scalability — SLOs, observability, hardening

* Architecture decisions on Kubernetes, databases, and cloud provider strategy

Stack: Go, Python, AWS, GCP, Kubernetes, PostgreSQL, CockroachDB, Redis, Terraform.

Looking for: software engineering background (Go or Python, not scripting-only), production cloud cost optimization experience, real distributed systems depth, and active AI tooling use in your engineering workflow.

Not a fit if: you're security/compliance-heavy, scripting-only, or dependent on large-org support structures.

Full JD + apply here: https://jobs.ashbyhq.com/stream/cbabbb5d-0e34-486b-acf7-ce40...

Amodo Design (https://amododesign.com/) | Sheffield, UK | Software Engineer | Onsite or Hybrid We are hiring software engineers who enjoy solving important real-world problems and working close to hardware; who learn new domains quickly and prefer practical solutions over over-engineered systems or unnecessary complexity. You’ll work on the projects best suited for you. Projects range widely, and include:

- Scientific tools

- Automation & robotics (Linux & ROS level)

- Embedded C/C++ (typically owned by dedicated firmware engineers, but software engineers are welcome to learn!)

- Linux, CUDA, Server engineering for our AI safety, security, and verification work

- Custom simulation software (usually python)

- Data analysis pipelines (python)

- Organisational tooling (Typescript, react, postgres, etc.)

Structure: Small teams of software, mechanical, electronics, and firmware engineers build end-to-end systems, typically shipping within a few months.

Apply: https://amododesign.com/career

Lucas Hage | Software Engineer (Backend / Full Stack) | Remote | Open to contract or full-time

5+ years building backend systems and cloud infrastructure. Currently at Flora Energia (São Paulo), previously at Colab and Terramagna.

Stack: TypeScript / NestJS · Python · Rust · PostgreSQL · RabbitMQ / SQS · Kubernetes · Docker · AWS (Lambda, EKS, RDS, Bedrock, Step Functions, S3, EventBridge) · OCI · GitHub Actions · Grafana / OpenTelemetry

Recent highlights: - Migrated AWS Lambda architecture to Kubernetes microservices (NestJS/TypeScript) - Participated in infrastructure migration from AWS to OCI (Oracle Cloud Infrastructure) - Built an AI-powered SmartField system using AWS Bedrock with RAG and OCR for automated data extraction - Designed a serverless document processing pipeline with Step Functions and multiple Lambdas - Built a scheduled notification system using EventBridge Scheduler and Lambda, improving communication reliability

CS degree (Universidade Federal de São João Del Rei). AWS cert. English: advanced.

Email: lucashage1995@gmail.com LinkedIn: linkedin.com/in/lucas-hage-7b33bb194 GitHub: github.com/hage9998

BetterDB (https://betterdb.com) (https://github.com/BetterDB-inc) | Founding Engineer | Remote | Full-time BetterDB is building the tooling ecosystem for Valkey, the high-performance Redis fork backed by AWS, Google, and Oracle. We're starting with observability — historical persistence, pattern analysis, anomaly detection, and Prometheus export — so you can debug what happened at 3am when you wake up at 9am.

Stack: TypeScript, NestJS + Fastify, React, Valkey, PostgreSQL, Docker, Kubernetes, Terraform, AWS.

We ship OSS self-hosted and have a live cloud SaaS: https://betterdb.com/login In the last two months we've averaged more than one release per week across multiple products and channels. That's what "moves fast" looks like in practice. We recently started moving more and more into the LLM cache space via both observability and actual libraries.

We hired our first engineer in March and are looking to expand the team — no pressure on timeline, we'd rather find the right person.

Just email kristiyan@betterdb.com with a bit about yourself and why this is interesting to you. I reply to everyone. It might take a day or two given volume, but you'll hear back.

BrightCore | Founding Engineer | Dublin, Ireland (Hybrid, 2 days/wk) | Full-time | €58–65k + 1.0–1.5% equity

We're a 3-cofounder gym/fitness SaaS , closing a pre-seed. Hiring our first engineer to own: - NestJS/Postgres backend (~70%) - Coral, our WhatsApp AI agent for member retention (~30%)

You'd be our first hire. Real ownership, real equity, no committees. Stack: NestJS, Prisma, Postgres, Next.js, Anthropic API, Meta WhatsApp Cloud API.

Looking for: 3–5 yrs backend, comfortable shipping solo, genuine curiosity about LLMs / retention modelling. ML hobbyist > ML PhD for this role.

Email: Frankie@brightcore.ie ... short note + GitHub or one thing you've shipped.

Kredit | .NET Engineer Roles | Remote (US) | Full-time

Kredit (https://www.kredit.fyi) is on a mission to resolve consumer debt. We help people get out of financial hardship and offer tools for companies looking to manage their internal processes. Kredit is a small team and growing.

Our stack: .NET Core, C#, PostgreSQL, CQRS, Angular, GCP, Kubernetes, Terraform and much more. We are looking full-stack engineers that have a .NET background, eager to learn and motivated to work in a startup.

If this sounds interesting to you, please reach out to recruiting at trykredit.com

Happy Returns | Engineering Manager | Remote, USA | Full-time

Happy Returns is solving one of e-commerce’s biggest pain points: returns. We combine proprietary returns software with reverse logistics, including box-free consolidated returns, to make returns better for shoppers, retailers, and the planet. We’re a UPS company, growing quickly, and our shopper experience has a 93 NPS.

We’re hiring an Engineering Manager to lead a team of 6–8 engineers. You’ll manage day-to-day execution, coach and mentor engineers, improve team productivity and agile processes, partner closely with Product, participate in architecture and technical design reviews, and help recruit and onboard new engineers.

You may be a fit if you have:

* 6+ years developing and testing web applications * 2+ years as an Engineering Manager * Strong written and verbal communication skills * Experience coaching engineers toward high-quality, maintainable, well-tested code * Comfort collaborating closely with Product, DevOps, QA, and other stakeholders

Bonus points for experience with Go, Python, React, PostgreSQL/MySQL/MongoDB, Docker, Kubernetes, AWS, e-commerce, logistics, or sustainability.

Remote role open to candidates in the United States. Must be authorized to work in the U.S.; we are unable to offer sponsorship at this time.

Apply: https://www.linkedin.com/jobs/view/engineering-manager-remot...

At SentiLink, we stop identity fraud at scale. Our products protect banks, fintechs, marketplaces, and leading financial institutions from synthetic identity fraud, identity theft, and emerging threats — analyzing millions of applications while keeping real users moving fast.

We’ve seen tremendous traction and are growing extremely quickly. Our real-time APIs have helped verify hundreds of millions of identities, starting with financial services and rapidly expanding into new markets. SentiLink is backed by world-class investors including Craft Ventures, Andreessen Horowitz, NYCA, and Max Levchin.

SentiLink supports a variety of ways to work, ranging from fully remote to in-office. We operate as a digital-first company with strong collaboration across the U.S. and India. We maintain physical offices in Austin, San Francisco, New York City, Seattle, Los Angeles, and Chicago in the U.S., and in Gurugram (Delhi) and Bengaluru in India. If you’re located near one of these offices, we would love for you to spend time in the office regularly. Some roles are hybrid or in-office by design. For example, our engineering team in India works primarily from our Gurugram office.

We’re a small, high-impact team solving one of the most interesting and adversarial problems in fintech: how do you build systems that reliably determine whether a real human is on the other side of a financial transaction?

We’re hiring across Engineering (Full-stack and Infra) and Data Science / ML roles. Hiring at Manager level as well as mid-level/Senior levels.

We’re language-agnostic and hire for fundamentals. Across the team you’ll see: • Python, Go, Rust, Scala • PostgreSQL, Snowflake • Kafka, Redis • Terraform, Kubernetes • ML: XGBoost, PyTorch, Feature stores, real-time scoring pipelines

If you love solving complex distributed systems challenges, building customer-facing ML products, or working on detection systems that must be both high-precision and low-latency, you’ll fit right in.

Roles are here: https://jobs.ashbyhq.com/sentilink?utm_source=hacker_news

If you have questions, feel free to reach out directly at liz.woodfield at sentilink dot com.

FranklinCovey | https://www.franklincovey.com/ | Senior Software Engineer | Remote (US) | Full-time

We're in the business of leveling up managers and making workplaces great, in search of a senior software engineer who's looking to join a team and do good work architecting, building, and maintaining a web platform that facilitates learning both online and in-person.

Stack: Django, Python, React, TypeScript, PostgreSQL, AWS

For more details, please check out: https://careers.franklincovey.com/virtual-usa/senior-softwar...

Kanmon | Senior FullStack Engineer | Hybrid (San Mateo) or REMOTE Kanmon is built around B2B finance and it's one of the largest and most broken markets in the world. SMBs are 44% of US GDP and extend over $5 trillion in trade credit to each other every year yet modern financial infrastructure intermediates less than 10% of it. The rest still runs on PDFs, paper invoices, and underwriting cycles measured in months.

Kanmon is rebuilding that stack from scratch. We're the finance infrastructure that lets software platforms embed payments and working capital directly into the software their SMB customers already run their businesses on.

Kanmon has raised new capital to go a layer deeper and are building an AI cashflow and business credit copilot that helps businesses make smarter financial decisions in real time. It's a genuinely new category of product, and we're architecting it from zero.

We're hiring a senior full-stack engineer to own it. End-to-end ownership, direct line to founders, no PM handoffs.

Full stack TypeScript: React, Next.js, NestJS, PostgreSQL, GCP. Competitive comp | mags@kanmonhq.com

Maiven | Full-Stack Engineer, UX/UI Designer, Energy Modeling Engineer | REMOTE (US) | Full-Time

At Maiven Energy, we're working on real-world problems at the intersection of responsible AI and residential energy. Our aim is to make energy upgrades smarter, faster, and more accessible, while helping reduce carbon emissions. We're a small, mission-driven team punching way above our weight: we have large utility customers, contracts in multiple states, and a growing pipeline of programs launching later this year. We're venture backed and moving fast.

We're hiring for three positions:

- Full-Stack Engineer – NestJS, React, Tailwind, TypeScript, Node, Postgres, AWS, Lambdas. [1]

- Energy Modeling Engineer – Python, pandas, AWS, modeling frameworks (ResStock, OpenStudio, etc.). Experience with energy programs or building science is a huge plus. [2]

- UX/UI Designer [no link]

Looking for builders who want real ownership, thrive in early-stage startups, and move with urgency and care. More: https://www.askmaiven.com

To apply: email hiring _at_ askmaiven.com. Generic, AI generated cover letters and resumes are discouraged.

[1] https://climatebase.org/job/69488877/fullstack-engineer

[2] https://climatebase.org/job/69488878/energy-modeling-enginee...

Location: Charleston, SC

Remote: Yes

Willing to relocate: Yes

Technologies: Ruby, Python, JavaScript (ES6), TypeScript, React, Node.js, PostgreSQL, MongoDB, OpenSearch/Elasticsearch, AWS (ECS, EC2, VPC, ALB, Secrets Manager), Docker, Terraform, OpenTelemetry, Jaeger, Prometheus

Resume/CV:https://drive.google.com/file/d/1aBYTxqlWIKmm59UT5ffK493tKR0...

LinkedIn: https://www.linkedin.com/in/zane-lee-14496a297/

Email: zanedev28@gmail.com

GitHub: https://github.com/Kcstills17

Co-creator of Retriever (https://runretriever.app/), an AWS-deployed observability platform that enables AI-powered trace analysis through distributed systems. Built a custom MCP server allowing developers to query trace data using natural language through LLMs like Claude, optimizing context consumption through intelligent data distillation from verbose OTLP structures.

Experienced with building full-stack applications. I am comfortable using AWS as a cloud environment and have experience with AI technologies such as RAG, MCP, and Vector embeddings.

SEEKING WORK | Full-Stack Developer (Django, Vue, AWS)

Location: Argentina (remote-friendly, US/EU time overlap)

I’m a full-stack developer with a background in finance, working mainly with Django, Vue, and AWS.

Over the past year I’ve been building a project called https://radarsapp.com — a marketplace with social features — where I’ve handled most of the stack:

Backend: Django APIs for search, inventory, orders, chat, and posts; Postgres + PostGIS; Redis for realtime features Frontend: Vue (PrimeVue/Tailwind), including feed, maps, and product flows Infra: Docker + AWS (ECS, S3, CloudFront), basic CI/CD and monitoring

Also have prior experience building data/analytics tools in Python (Pandas/NumPy) and working on portfolio systems.

GitHub: https://github.com/lorenzoreyes

Email: lorenzoreyesx@gmail.com