Proven Software | Senior Fullstack SWE (2 Roles) | REMOTE (US) Full-Time | $140k-$170k

Proven is a start-up software company delivering a modern electronic medical record (EMR) to physical therapists. Proven’s Founders and Executive team have decades of experience successfully growing and scaling companies in healthcare.

Stack: .NET/C#, SQL Server, Blazor with Telerik controls.

We're hiring two senior fullstack engineers. DevOps/Azure resource management experience a major plus.

We primarily work ET hours but are flexible Excellent PTO and employer-sponsored healthcare benefits

Email us at: hiring AT provensoftware DOT com

NVIDIA | Python Developer (Django) — Air (Digital Twin for Data Center Simulation) | HYBRID — [Raleigh-Durham, NC] | Full-time

NVIDIA’s Air team builds a web app that simulates real data centers for design and validation. Learn more: https://air.nvidia.com

You’ll: design/build web apps & REST APIs in Python/Django; write clean, tested code; review PRs; debug performance/security issues; partner with PM/architects; and ship scalable features used by teams running the world’s most advanced data centers.

Must have: 3+ years Python + Django; REST/async; SQL + relational DBs; Docker/QEMU; Git; agile collaboration; strong comms.

Nice to have: Kubernetes; Linux networking & SDN debugging; JavaScript/HTML/CSS; Angular.

Compensation (depends on level/location): L2 $120,000–$189,750; L3 $148,000–$235,750 + equity + benefits. Apply: [paste your ATS link for JR1999975] (or search JR1999975 at https://www.nvidia.com/en-us/about-nvidia/careers/)

You can message me on linkedin if you'd like more info or would like a referral! https://www.linkedin.com/in/sameure/

JotPsych (https://jotpsych.com) | Hybrid (DC Area) | Full-Time | Roles: (1)Senior Frontend Engineer (2)Senior Backend Engineer | $5m Seed Round

JotPsych is a behavioral health AI scribe tool and we're looking for frontend and backend engineers as we build the first agentic EHR for behavioral health. We're looking to hire ASAP! More info in the links below:

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Senior Frontend Engineer: https://jotpsych.notion.site/We-re-hiring-Senior-Frontend-En...

Looking for engineers that are strong with Redux Toolkit (RTK) & RTK Query, comfortable reasoning about client‑side caching & invalidation.

- Cash (~$150-250k) - Material equity (~0.75%)

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Senior Backend Engineer: https://jotpsych.notion.site/We-re-hiring-Senior-Backend-Eng...

Looking for engineers that are fluent with Python (FastAPI, Celery), SQL & NoSQL schema design, AWS primitives.

- Cash (~$150-250k) - Material equity (~0.75%)

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Greystone | Senior Backend Engineer, SWE II Backend (job posting soon), Product Manager | NYC (ONSITE) | Full-time

We're hiring a Backend Engineers and a PM at Greystone, a leading real estate finance and investment company. We're building internal platforms and external tools to help investors, lenders, and originators operate smarter and faster with a strong focus on data quality, workflow automation, and user-first design.

Roles: Backend Engineers: Python, SQL, Azure, emphasis on clean architecture, microservices, testing

Product Manager: Own strategy, roadmap, and execution for new internal platforms.

You Might Be a Fit If: - You thrive in lean, fast-moving teams. - You like mixing business context with code. - You’ve worked in fintech, proptech, or enterprise tools—but want fewer meetings and more autonomy.

We're committed to a fast, respectful hiring process. If you're interested, please apply on our career portal: https://recruiting.ultipro.com/GRE1013GIT/JobBoard/4f866dba-...

Cenovus Energy Inc. | Senior Software & AI Engineer | Full‑Time | ONSITE | Calgary, Alberta, Canada | Relocation Support

We are hiring experienced Senior Software Engineer and AI Developers to help deliver full‑stack products that bring operational automation and domain intelligence to teams (full-stack, agents, RAG, data pipelines, business dashboards).

You’ll need 8+ years in software engineering, proficiency in Python, Ruby, SQL, JavaScript, full‑stack frameworks (Rails, Flask/Dash, etc.), AI toolkits (OpenAI API, LangChain, LlamaIndex, vector stores, RAG pipelines), and experience with agentic development practices. Canadian work authorization and relocation to Calgary is required.

Reach out through link in bio. No recruiters please.

GHCO - https://www.ghco.co.uk/ | Software Engineer, Senior Software Engineer, Engineering Manager, Trade Application Support | London | Hybrid | Full Time GHCO is an ETF market maker, quoting across European exchanges. We're a small team of expert traders and proven software engineers, looking for experienced technologists who have an interest in advancing the state of the art in automated market making. Tech stack we're hiring for: Java, Python, SQL, AWS

* Benefits and perks: competitive salary, health insurance, generous hardware and software allowance, casual work environment, inclusive team-oriented culture, rapid career growth opportunities, high impact work.

email: anthony dot sheldon at ghco dot co dot uk, with Hacker News in the title

Odoo | Full Stack Developer | Hybrid (Belgium, 3 days/week) | Full-time | Visa + €10k Signing Bonus | https://www.odoo.com/r/mnk

Odoo builds open-source business apps used by millions. We're hiring full stack developers to work on our Python/PostgreSQL backend, fast JS framework, mobile apps, website builder, and more.

Why join us:

- €10k signing bonus - Visa sponsorship + relocation support (contains 1 month free housing) - No clients, no deadlines — just clean, open-source code - Pick your team after 3 weeks of onboarding - Great team, countryside office (with chef!), flexible hours

You:

- Master several programming languages - Proficiency in object-oriented programming - Strong in SQL, data structures, and DB design - Passionate, autonomous, and eager to build real stuff

Apply → https://www.odoo.com/r/mnk

Mobian | Remote (North America, Europe, South America) | Full-Time

We're hiring a Senior Data Scientist to lead the measurement of digital ad campaigns on sales outcomes. You'll design advanced sales lift models, integrate complex data pipelines, and deliver insights to clients.

Deep expertise in Python, SQL, causal inference, and A/B testing is essential. Applied economics and econometrics background is a plus. Strong communication and adaptability in dynamic environments are key.

Requires 6–10 years of hands-on experience and a Master’s degree in a relevant field.

email your resume + interest to careers@themobian.com, subject line: Data Scientist

Opsin Security | San Jose / SF Bay Area (Hybrid, 2–3 days on-site) | Full-time | https://opsinsecurity.com/careers

Opsin helps enterprises secure and deploy Enterprise Search/AI systems (e.g. Microsoft Copilot, Google Gemini) responsibly without exposing sensitive data. Venture-backed by Race Capital. You’ll work directly with the founders on a small (<10) person team shipping fast in a huge green-field space.

We are hiring for:

- Senior AI Engineer – 5 + yrs backend + 2 + yrs ML/LLM; Python, SQL, AWS/GCP experience; comp + eq (https://www.opsinsecurity.com/jobs/senior-engineer-ai-engine...)

- Senior Full-Stack Engineer – 4–8 yrs shipping product; React/Next.js + API & DB design + Nest.js; TypeScript, Python a plus; comp + eq (https://www.opsinsecurity.com/jobs/senior-engineer-full-stac...)

- Staff Backend Engineer – 8 + yrs building scalable systems + 2 + yrs technical leadership; architect data-driven services for LLM security; comp + eq (https://www.opsinsecurity.com/jobs/staff-engineer-backend)

- Founding Account Executive – full-cycle sales to CISOs/CIOs; 5 + yrs enterprise SaaS; cybersecurity/Microsoft ecosystem a plus; ~50% travel; comp + eq (https://www.opsinsecurity.com/jobs/founding-account-executiv...)

Tech stack: Python, TypeScript (Nest.js), React (Next.js), Postgres, Azure, modern LLM tooling

How to apply: email your résumé + a short note to careers@opsinsecurity.com with subject “HN – [role]”, or apply on our careers page.

I’m Shay Nehmad, Founding Engineer at the company. Happy to answer questions at shay@opsinsecurity.com or on LinkedIn

Ground Signal | Remote (US only) | Multiple Roles | Full Time | https://groundsignal.ai

Ground Signal uses social analytics and AI to help suppliers in the alcohol industry optimize sales. Our platform processes billions of records and delivers insights through a robust SaaS product used by top-tier analysts and global brands.

We're a fully remote team of 20+ distributed across the US. We care about capability over titles, value outcomes over process, and keep ego to a minimum. We collaborate tightly, move fast, and meet up in person a few times a year to recharge and plan together.

We are currently recruiting for the following positions. We are not able to sponsor at this time.

Software Engineer (Backend, Python, PostgreSQL, ClickHouse, dbt) https://wellfound.com/l/2BiEQL

Associate Data Engineer (Python, SQL) https://wellfound.com/l/2BtEEq

Data Insights Engineer (Python, Jupyter, SQL) https://wellfound.com/l/2zf39a

Product Designer (UX/UI design for complex data/analytics) https://wellfound.com/l/2Bn56J

Command Zero | https://www.cmdzero.io | USA and Canada | Full-time | Remote

Command Zero is looking to revolutionize the way organizations conduct cyber investigations. To date, the founders have participated in six successful cybersecurity acquisitions, including exits to Symantec, McAfee, Sourcefire, and Cisco. Backed by leading tier-1 VCs and dozens of cyber executives and thought leaders, Command Zero is currently hiring.

Requirements: - 3+ years of experience in back-end development in a distributed system. - Proficiency in Go. - Proficiency in SQL. - Experience with version control systems (e.g., Git). - Excellent communication and collaboration skills.

Apply on the website or on LinkedIn. Please provide a URL to any public code repositories you’d like considered as part of the screening for the interview process. https://www.cmdzero.io/careers/go-developer-backend https://www.linkedin.com/jobs/view/4276893274/

Kharon | Individual Contributor and Data Engineering Leadership Opportunities | REMOTE or HYBRID in London, Madrid and Denver | Full Time - https://kharon.com/careers

Kharon is on a mission to revolutionize the current global security landscape. When you look at any major global crisis event, we’re providing intelligence that’s at the heart of those circumstances. We connect the dots in a way that’s meaningful, and we're currently growing our Data Engineering vertical. Operating at the intersection of global security + international commerce Engineering team tackling massive open-source data at scale Stack: Python (Pandas, NumPy, FastAPI), SQL, Spark, Databricks, Neo4j, Elasticsearch, AWS, Docker, K8s Feel free to check out open roles at the link above, or send me an email directly at eng-hiring@kharon.com