Showpass | https://www.showpass.com | Calgary, AB | ONSITE (hybrid 2-3 days/week)

Live events platform: ticketing, checkout, organizer tools, orders/settlements, analytics.

Backend (Intermediate to Senior): Python/Django; PostgreSQL; Redis/Celery; ClickHouse; GKE; Docker

Frontend (Senior to Principal): React/Next.js; TypeScript; Design Systems/Storybook; Jest/Playwright; perf/a11y

Solutions (Intermediate to Senior): TypeScript/Node or Python/Django; REST; OAuth2/OIDC/SAML; SDKs/CLIs

Apply: hn@showpass.com

Subject: HN Sep 2025 - <Role>

No recruiters, please.

Chicago IL | Onsite Tech Nexus | Tech Lead | $160K - $200K

nativeMsg is the leading RCS Business Messaging experience and API platform, enabling businesses to create, send, and optimize interactive text messaging experiences. We are transforming business communication by converting traditional SMS into rich, interactive experiences that include images, videos, and interactive buttons, all within the native messaging app.

The Opportunity

We're seeking a Technical Lead to drive the development of our RCS Business Messaging platform while leading our existing development team. This is a hands-on leadership role where you'll architect scalable solutions, integrate cutting-edge AI capabilities, and ensure our cloud infrastructure supports millions of interactive messages daily. You'll be at the forefront of RCS technology innovation, working with carrier messaging APIs, building conversational AI experiences, and creating the technical foundation for the next generation of business messaging.

What You'll Do

Platform Architecture & Development: Architect and develop our core RCS Business Messaging API and platform. You will ensure system scalability for high-volume messaging while optimizing for performance and reliability. Cloud & Data Management: Lead the design of our GCP cloud infrastructure. You will architect robust database systems and design data pipelines for analytics and AI. AI & Innovation: Build and integrate conversational AI capabilities, chatbot logic, and machine learning models to create intelligent messaging experiences. Team Leadership & Vision: Manage and mentor the development team, defining the technical roadmap and architectural vision. You will establish development best practices, including code reviews and testing frameworks, while recruiting and developing technical talent. What You'll Bring

Technical Experience: 5+ years of enterprise development experience with expert-level proficiency in Java. 3+ years of hands-on experience designing scalable cloud infrastructure. Extensive experience building RESTful APIs and high-throughput, low-latency messaging systems. Strong experience with database design, optimization, and management. Experience with messaging APIs (RCS/SMS) or carrier integrations is preferred. Hands-on experience building conversational AI interfaces and integrating ML models. Leadership Experience: 5+ years of experience leading and mentoring development teams. Proven ability to partner with cross-functional teams to deliver technical solutions. Strong experience with Agile methodologies (Scrum/Kanban) and DevOps practices.

JustWatch | Frontend Engineer (Junior–Mid) | Berlin | Full-time | HYBRID (2–3 days office, rest remote)

At JustWatch, we’re focus on being the best at marketing in the global entertainment industry. Our Martech team develops internal tools that help us achieve that goal, creating automations to help our own campaign managers inside the company.

You’ll work on our Business Dashboard (Next.js), leading projects end-to-end while collaborating with designers, stakeholders, and other dev teams. We’re looking for a frontend engineer who enjoys solving problems, thrives on collaboration and focus on bringing value to its users. In return, we offer a culture of trust and ownership, where you can make decisions without bureaucracy and really focus on the value you are delivering. Based in Berlin, we have an awesome office that you don’t need to go, but you will want to.

Our tech stack: Next, Typescript, Tailwind

https://www.justwatch.com/talent/jobs/tech/junior-mid-level-...

Elyos (https://elyos.ai) | London, UK | ONSITE | YC S23

Company: We're the UK's fastest growing AI voice company (~30% MoM) - very deeply focused on the trades industry right now (think your friendly neighbourhood plumbing company).

We're a small but experienced team hiring 3 more to join:

- Founding Engineer - Founding SDR - Founding Operations Lead (customer success)

Tech: GKE, python, postgres, telephony/media streaming, realtime LLMs, contextual eou detection, the occasional REST API.

https://careers.elyos.ai/ or message me - matt (at) elyos.ai

Mention bananas for extra kudos.

GoGoGrandparent (YC S16) | FULLY REMOTE | Full-time | EST timezone | 1 x Tech Lead Engineer + 3 x Senior/Staff Backend/Full-stack/Frontend Engineers | $100k-$200k (partially location-dependent) Build high-quality, robust engineering at the rarest of things - a Silicon Valley startup that is both wholesome AND profitable. We have 8-figure revenue, are YC-backed, and growing fast. Tech stack (required): Back-end (Node, Typescript, MySQL, REST* / GraphQL), Front-end (Vue.js), deploy (AWS, Docker/K8s)

Minimum 5 years experience (with Node or Vue).

2-stage interview process.

If you want to help older adults and people with disabilities, send your LinkedIn/CV to william@gogograndparent.com (keep it brief) or apply at https://www.ycombinator.com/companies/gogograndparent/jobs