Duolingo | Full-time | Multiple roles | $177K-$240K for NY roles | NY and London | Hybrid

Our mission is to develop the best education in the world and make it universally accessible. Our culture is eng-driven, friendly, and very data-driven thanks to our large userbase. Check out our blog to see what engineering at Duolingo can look like: https://blog.duolingo.com/hub/engineering/

Tech stack: (frontends) Swift/Kotlin/TypeScript, (backend) Python/Kotlin/Postgres/Dynamo, (infra) AWS/k8s/Terraform.

We're always hiring for engineers. A few roles below:

Senior Engineering Manager, Chess (NY) https://careers.duolingo.com/jobs/8385137002

Senior Android Engineer (NY) https://careers.duolingo.com/jobs/8217266002

Senior iOS Software Engineer (NY) https://careers.duolingo.com/jobs/8318257002

Engineering Director (London) https://careers.duolingo.com/jobs/8444624002

Senior Gameplay Programmer (London) https://careers.duolingo.com/jobs/8424809002

Base salary: $177-240K for the NY-based roles, unsure about the London-based roles.

Perks: free lunch, 2-week winter break + 20 days of flexible time off.

Decise | Principal Engineer & Technical Strategist | Remote (US) | Fully Remote | Contract (1099)

Decise is a hands-on advisory and delivery firm that helps organizations unlock the full value of their technology and improve business profitability.

We work directly with executives to define what should be built, then we build it. Our work spans software engineering, data platforms, analytics, and customer-facing digital products. We often operate as fractional CIOs and CTOs, guiding both the strategic direction and the technical execution of our clients’ technology initiatives.

Our clients rely on us to turn complex business problems into working systems — not slide decks.

We are intentionally small and senior. Everyone on the team is a builder who can operate independently, solve complex problems, and deliver finished systems that people actually use.

White-glove service. Blue-collar grit.

We’re looking for a principal-level technologist who can move between engineering, architecture, and client strategy. Most of your time will be spent building systems and writing production code. The rest will involve working directly with executives to shape technical direction and ensure the work creates real business value.

Typical technologies we work with include React, Angular, Next.js, Node.js, Go, Snowflake, SQL, dbt, Domo, Streamlit, AWS, Vercel, and modern AI-assisted engineering tools. The exact stack varies by client; the ability to learn quickly and move confidently across technologies matters more than any specific tool.

Strong candidates typically have 10–15 years of experience building production systems and are comfortable operating both as hands-on engineers and as technical advisors to executives.

This is a long-term, full-time independent contractor engagement (1099). Everyone at Decise — including the founders — operates in this structure. Compensation is designed to be competitive with senior engineering roles at leading technology companies.

The fastest way to stand out is to show us something you’ve built: a production system, GitHub repository, application, or data platform you designed.

Apply here: https://www.linkedin.com/jobs/view/4380468950/

PermitFlow (YC W22) | Staff, Fullstack & Frontend Software Engineers | New York, NY | ONSITE | Full-time | https://permitflow.com PermitFlow’s mission is to streamline and simplify construction permitting in the $1.6 trillion United States construction market. Our software reduces time to permit, supporting permitting end-to-end including permit research, application preparation, submission, and monitoring.

We recently raised a $54M Series B led by Accel with participation from Kleiner Perkins, Felicis, Altos Ventures, and YC.

Permitting is a challenging yet interesting problem; thousands of municipalities across the United States have their own processes and requirements - many which are continually updating. Software, AI, and LLMs provide an exciting opportunity for us to reason at scale and distill a nuanced and localized permitting process into a standard and streamlined experience for our customers.

We're looking for customer-obsessed, ambitious, and hard-working teammates who are excited about solving a real-world problem with technology at its helm.

NYC Onsite Roles | apply at: https://jobs.ashbyhq.com/permitflow?departmentId=d33195eb-89...

1. Staff Software Engineer - $200K-275K + equity

2. Fullstack Software Engineer - $125-240K + equity

3. Senior Frontend Engineer - $125K-240K + equity

https://permitflow.com/hiring

Carrot | Senior Software Engineers | Full-time | Remote

Carrot is an all-in-one platform for cannabis dispensaries (ecommerce, loyalty, marketing, apps, and delivery) with a small, high-impact, remote team. We use Scala + Scala.js with functional programming principles, but we value strong programming fundamentals over specific tech stack experience.

What makes this opportunity unique:

- Full remote work with flexible hours (just need availability during US Pacific mornings) - Direct impact on product direction in a growing industry - High autonomy with support through peer reviews and mentorship - Work directly with our CTO in a flat organization

We’re looking for senior engineers excited about working in a functional paradigm. Our interview process is refreshingly streamlined (1-2 interviews).

Full job description: https://www.notion.so/Job-Description-Senior-Full-Stack-Engi... Email seb at getcarrot.io with resumes or questions.

Twindo (Formerly Canvas; The Spatial Computing Company) | Full-time | Remote

At Twindo, we’re working on spatial computing - using computer vision to 3D reconstruct and understand your surroundings so that software can operate over real-world spaces.

Twindo brings together everything that professionals need to understand the spaces they design, build, and manage, without extra site visits or second-guessing. With a quick scan or plan upload, any space becomes structured, accurate, design-ready data your whole team can actually use.

iOS & Backend Engineer (Python) (Europe/LatAm Remote) Chief Product and Technology Officer (Global Remote) Associate Account Executive (Mid Market Sales) (USA Remote) Full Stack Engineer (Backend focus) (Europe/LatAm Remote)

For detailed information check out https://www.twindo.com/careers/

Keywords: 3D, computer vision, photogrammetry, geomatics, SLAM, CAD, iOS, Python

Upvest GmbH | Software Engineers (mid and senior) | SRE Lead | Berlin, Tallinn, London, or REMOTE in Germany, Europe | Full time

At Upvest, we are on a mission to make investing as easy as spending money. Upvest empowers businesses to offer a wide range of investment products and the best experience in the field of capital market investment and retirement planning. Upvest’s Investment API is easy to integrate so that fintechs and financial institutions can save resources and fully focus on their core business.

Roles available:

Senior Software Engineer (f/m/d): https://jobs.ashbyhq.com/upvest/ae836a7b-2b1a-47f6-94a8-1f17... Software Engineer (f/m/d) : https://jobs.ashbyhq.com/upvest/be598062-2fae-46ae-ad14-9828... SRE Lead (f/m/d) - https://jobs.ashbyhq.com/upvest/1b672cdf-b49b-42e7-ace6-b9fb...

If interested, please apply via the links.

Doconomy | Customer Solutions Engineer | Stockholm, Sweden | REMOTE (EU) | Full-Time

https://doconomy.teamtailor.com/jobs/7291339-customer-soluti...

Doconomy, a market leader in impact technology, dedicated to driving global climate action by equipping banks with innovative financial tools that educate and foster positive change.

Our ecosystem of tools combines expertise in behavioral science to design financial services that make it simple and fun to save and invest money, while reducing environmental impact. By integrating these solutions into existing banking apps, we help people achieve their financial goals and contribute to a sustainable future.

Brico (Series A) | San Francisco, CA | ONSITE (Hybrid OK)| H1B Transfer OK | Full-Time | https://www.brico.ai

Brico takes the hassle out of financial licensing for Financial Institutions and FinTechs. We automate new license applications, maintenance, and renewals, creating a 1-stop shop for all licensing needs. Put simply, we are creating from the ground-up dedicated AI-augmented software to manage complex regulatory compliance workflows that used to live in spreadsheets and emails, across all 50+ US jurisdictions.

Our revenue has grown 600% since starting 2.5 years ago, with strong product/market fit and customers such as Marqeta, BitGo, Conduit and Bilt.

We are a small but mighty backend-but-do-it-all engineering team of 6, taking on any challenge that's thrown at us in order to build for and support our growing customer base ranging from ambitious crypto startups to established Fortune 500 financial services companies.

I am hiring senior/staff backend engineers who are also comfortable going up the stack when required to work on our frontend (we are all backend folks). Tech stack: python/django+drf/react

Reach out to me directly (Co-Founder/CTO) at ZW1haWwgZW5naW5lZXJpbmctam9ic0Bicmljby5haSB3aXRoIFtMRVNTVElNRU1PUkVKT1ldIGluIHRoZSB0aXRsZSE=

Microsoft AI | Platform Engineering | Full-time | Greater Seattle Area, WA or Bay Area (Mountain View), CA | ONSITE (4 days/week)

We're building the platform primitives that power https://copilot.com (Microsoft's ChatGPT). If you've shipped systems at scale—whether backend services, distributed infrastructure, ML platforms, or consumer AI products—we want to talk to you.

The work: design and build secure, performant platform services for AI at scale; collaborate with infrastructure, product, design, and research teams; ship high-quality code that reaches hundreds of millions of users; move fast in a design-driven environment.

You: solid fundamentals in systems thinking and software engineering; fluent in Python, C#, C++, Java, JavaScript, or similar; shipped real products or systems people use; can communicate across technical and non-technical teams.

Compensation: Competitive with other frontier AI companies, commensurate with experience. Relocation available.

We're actively hiring and will respond to qualified applicants. Check https://microsoft.ai/careers for current openings, or email maiplatformjobs@microsoft.com if something specific doesn't fit the bill. Apply directly if genuinely interested in building the future of AI.

New grads: If you've had 2+ MAG7+ internships (or adjacent large scale experience) AND a strong transcript from your university. Use [NEW GRAD] in the subject line.

LiveKit | VoiceAI | webRTC | Remote | Full Time | [http://livekit.io/]

LiveKit is building the infrastructure layer for the voice-driven era of computing. Our platform gives developers everything they need to build, test, deploy, scale, and observe agents in production.

Hiring:

>> Senior Software Engineer, Agents: https://jobs.ashbyhq.com/livekit/1757f49e-7e19-4c45-85f7-e46...

>> Distributed Systems Engineer: https://jobs.ashbyhq.com/livekit/938b49cb-4542-46ae-9383-031...

>> Staff Security Engineer: https://jobs.ashbyhq.com/livekit/efc06ff8-37c4-473e-8de8-bbb...

>> Senior Backend Engineer, Billing & Monetization: https://jobs.ashbyhq.com/livekit/bb299eeb-b144-41b2-a654-994...

>> Developer Success Engineer: https://jobs.ashbyhq.com/livekit/fdff28df-2245-43c1-bb09-430...

Co-founders: Russ d'Sa - CEO [https://www.linkedin.com/in/russelldsa/] David Zhao - CTO [https://www.linkedin.com/in/davidzhao/]

Read our most recent blog post on Agents UI Launch: [https://www.notion.so/ViVE-2026-LiveKit-Voice-AI-Target-Comp...]

Prelude | Paris | ONSITE | Full-time

Send verification messages anywhere in the world with the best prices, top deliverability, and zero spam with Prelude - the SMS API powering your growth.

https://prelude.so/

With an ex-Zenly founding team and investment from Seedcamp and Singular, we've already grown to 50 people and signed with X, Sunday, BeReal and more.

Hiring across Engineering (Go, Rust, AWS). We also have a niche role for someone specialising in device fingerprinting where we can be more open minded on remote work or relocation. https://jobs.ashbyhq.com/prelude

Herakles Defense | Munich, Germany | REMOTE| Full-time | Part-time available

Here's the problem: A small drone flies at you at 60mph / 100 km/h You have a camera, one edge processor, and must detect, classify, and track it at 30fps — against sky, trees, buildings. Starting from 100+ meters. If your pipeline drops a single frame at far range, the intercept fails. Sounds impossible? We think together we can solve this.

Now the second problem: Your guidance law needs to predict where that target will be in 0.5 seconds, compute the intercept geometry, and command the flight controller — with noisy IMU data, wind gusts, and a target that doesn't fly in straight lines. No GPS. No RF link. Just onboard compute.

We solved the guidance part in simulation. Our IBVS pipeline tracks and hits moving targets in SITL. The hardware prototype is built and ready. But the real engineering starts now.

We need:

* Computer Vision & Edge AI Engineer — YOLO on Jetson/Hailo/QRB5165. Detect, classify and track small targets at 100m+. Model pruning, TensorRT, sensor fusion. If you've pushed edge hardware to its absolute limits, this is your problem.

* GNC / Flight Systems Engineer — Image base visual servoing, proportional navigation, EKF/UKF state estimation, PX4 integration. Take what works in sim and make it survive real-world sensor noise.

* Simulation & Test Engineer — SITL/HITL, Monte Carlo campaigns, digital twins. 10,000 simulated engagements before anything leaves the ground.

* Technical Advisors — Drone warfare, GNC/aerospace, defense procurement. A few hours/month from the right person changes our trajectory.

We're a pre-seed defense startup in Munich building autonomous interceptor drones to stop FPV kamikaze drones. 2 founders. Salary + equity. No AI screening — we read every application.

https://www.herakles-defense.com/careers

Trunk | https://trunk.io Tech Lead (CI & Test Data Platform) - San Francisco HQ and open to Relo Marketing Lead (Developers) - Remote friendly Developer Advocate - San Francisco HQ and open to Relo Sr Platform Engineer - San Francisco HQ and open to Relo

Trunk is an a16z funded (25M) Series A dev tools startup, redefining software development at scale. At Trunk, our mission is to help teams create high-quality software quickly. AI has made writing code 10x faster, but shipping is still painfully slow. The bottleneck has shifted downstream - to merge conflicts, flaky tests, inconsistent code quality, and dozens of other frictions that drain productivity and morale. Engineering teams that can stay focused on designing, implementing, and delivering software will build magical, high-quality projects - and they'll be happier doing it. We're building a CI Reliability Platform that empowers teams to land code faster and develop happier!

Our products:

  * Merge Queue: Ensure your PRs keep the builds you care about green at any scale.

  *Flaky Tests: Detect and eliminate Flaky Tests.

Frontend: Typescript, React, Next.js, AWS Backend: Typescript, Node, AWS Data pipelines: Dagster, Python, polars CI/CD: GitHub Actions

Unlimited PTO (and we all actually take PTO), competitive salary and equity packages! Please apply here: https://trunk.io/jobs.

Trayd | Engineers + Product / Ops Roles | NYC (ONSITE) https://buildtrayd.com

https://jobs.ashbyhq.com/trayd

Trayd is building the financial operating system for commercial construction. Contractors still run payroll, compliance, and job costing across spreadsheets and legacy software. We replace that stack with a single platform that automates payroll, union compliance, time tracking, and job costing.

Construction payroll alone moves ~$260B annually in the U.S., and most of the industry still runs on outdated tooling. We’re rebuilding that infrastructure from the ground up.

Small, senior team with high ownership. Engineers own systems end to end and work directly with leadership and customers.

Stack: TypeScript, React, Next.js, React Native, Node.js, Postgres

Location: NYC (SoHo office), fully in person.

Open roles Engineering – Senior Software Engineer Product – Product Operations Associate Implementations – Implementations Analyst, Senior Implementations Analyst Customer Success – Customer Success Manager

All roles: https://jobs.ashbyhq.com/trayd

Baton | Senior Software Engineer - Full Stack, Technical Lead / Software Engineer - Infrastructure, Data Platform | San Francisco, CA (Hybrid) | Full-Time

Baton (baton.io) is Ryder's in-house product development group focused on harnessing emerging technologies to redefine transportation and logistics. With $10B in freight under management, our technology reaches every part of the U.S. economy.

We design and ship category-defining software that enables Ryder and its 50,000+ customers—including some of the world's most well-known brands—to plan and execute freight intelligently, efficiently, and cost-effectively. Our work includes everything from customer-facing software to the data platform that will power the next era of innovation at Ryder.

Baton's mission: enable supply chain on autopilot.

Ryder acquired Baton in 2022 to power its next wave of digital products. We operate at startup speed, with Fortune 500 reach. If you have a passion for solving complex problems and creating impact for the engine of the American economy, you'll love it here.

Current openings at Baton:

* Senior Software Engineer - Full Stack, Technical Lead ($200,000 - $250,000): https://grnh.se/wkmk2d0e7us

* Software Engineer - Infrastructure, Data Platform ($162,000 - $216,000): https://grnh.se/d6s6od6w7us

Fullstory | Atlanta | https://www.fullstory.com/

Fullstory offers privacy-preserving session replay and analytics for websites and mobile apps. Our session replays are nothing short of magical - they look almost like a video of the user's screen (with private details redacted) - and the combination with analytics creates eye-opening insights.

Our current engineering roles are all semi-onsite in Atlanta, USA (1 day per week in office):

* Senior Software Engineer, Web Capture - $145~170k + 10% bonus - JavaScript/TypeScript, React, Go (golang) - https://www.fullstory.com/careers/jobs/76e583a9-74c0-42d4-ae...

* Software Engineer, Digital Experience Analytics - Go (golang), TypeScript, GCP - https://www.fullstory.com/careers/jobs/a786962d-68c1-48fa-8b...

* Software Engineer, Subtext - AI agents, Go, TypeScript - https://www.fullstory.com/careers/jobs/073bfc41-0ac6-4e59-a5...

We have additional roles for sales, consulting, product design, product management, and customer support open in Atlanta, Seattle, London, and Czechia as well as some Remote (US) options. See the full list at https://www.fullstory.com/careers?ashby_jid=bce3fcba-6b80-43...

For US roles, you can expect regular raises & bonuses, equity, and benefits including: health insurance, 401k matching (Vanguard), annual learning stipend, unlimited PTO, parental leave, and more. I take about 4-5 weeks vacation a year, in addition to ~3 weeks worth of company holidays (federal holidays + the week of Christmas to New Years.)

Folks in other countries can also expect a strong benefits package, but I'm not as versed on the details.

Additionally, you get a 5-week sabbatical after 5 years of employment - I took mine about a year ago, and it was fantastic.

To apply, please submit your info on the website, and our recruiting team will get in touch with you. If you have questions, feel free to reply here or contact me directly. (I'm an engineer on the iOS team, but I'll do my best to answer questions.)

COMPANY: Tvrtle ROLE: Founding Full Stack Engineer LOCATION: Remote COMMITMENT: Part-time / flexible COMPENSATION: Equity TECH: Laravel, Vue, Tailwind, AWS

Tvrtle is building a portfolio of software products across SaaS, developer tools, and niche consumer apps.

We're looking for a founding engineer who enjoys building products from scratch and wants meaningful ownership in what we create.

You'll work directly with the technical founder and help design, build, and launch products used by real users.

More details: https://tvrtle.com/FOUNDING_ENGINEER.md

Blackshark AI | Software Engineers & Platform Engineers | Full-time | Austria or Remote EU Hours | VISA sponsorship available

We build geospatial AI infrastructure. Our platform lets analysts train custom object and change detection models on satellite/aerial/drone imagery in minutes, then reconstructs 3D terrain from those detections. We just shipped a planetary-scale simulation platform with Lockheed Martin powered by Unreal Engine.

If you want to work on distributed systems that run in a data center one day and an edge laptop the next, we have interesting problems. Our training and inference infrastructure is processing trillions of pixels and we deliver real world impact for our customers across defense, intelligence, and local governments.

Tech Stack: Python, Fast API, PyTorch, Postgres, Redis, Vue.js

Infrastructure Stack: Kubernetes & Docker, Linux, AWS & Azure, Azure DevOps, Terraform, ELK, Prometheus & Grafana, ArgoCD & Helm

Roles:

Software Engineer - Frontend UI https://jobs.eu.lever.co/blackshark/5c596b85-5134-4601-be25-...

Software Engineer - Data Plane Team: https://jobs.eu.lever.co/blackshark/6110fedd-5cd8-40e5-ac11-...

Software Engineer - Machine Learning Team: https://jobs.eu.lever.co/blackshark/7c4b0833-790b-4490-b24a-...

Platform Engineer - Deployment Team: https://jobs.eu.lever.co/blackshark/56a85834-d986-4105-9cc8-...

or reach out to HM with questions at: 'eivanov@' + username[:-2] + '.' + username[-2:].lower()

Stealth | Founding Engineer (Distributed Systems) | San Francisco | ONSITE

We are building cost attribution and observability for AI workflows. We correlate application traces, model usage, and infrastructure costs to compute cost-per-outcome for each customer for AI systems so that AI teams can do outcome-based pricng.

We're looking for a founding engineer to build the core data platform: ingestion pipelines, cost computation, and analytics infrastructure that scales from thousands to millions of workflow runs.

You should have experience building distributed systems and working with OpenTelemetry traces and data pipelines. Experience with AI evaluation systems is a plus.

Comp: $150k + 0.75% equity.

If interested, send a short note and GitHub to deborah [at] botanu dot ai

Redbook | Staff Software Engineer | REMOTE (US) | $200k-$250k

Redbook is the new software of reference for cattle feed yards. We're digitizing the $90B cattle industry, the largest vertical in agriculture. We have built the only cloud-based product in the industry that connects field operations and financials. The market is resonating with our solution with more than 100 customers using the product. We plan to completely change how farmers manage their businesses and money.

We're hiring a Staff software engineer to help us integrate with other agtech products, build new features, and scale our platform. Upcoming projects include integration with futures market, tooling to streamline customer onboarding, integrations with hardware, and much more!

https://app.dover.com/apply/redbook-software/fa6c1d33-5de6-4...