Fold | Remote (US Only) | Senior Back End Engineer | Full-time

Fold is a publicly listed bitcoin financial services company building the tools people need to earn, buy, sell and live on Bitcoin. We're looking for a Senior BE Engineer to help build the financial infrastructure behind our products - payment processing, ledger systems, card transaction flows and event-driven pipelines.

  - 5+ years software engineering experience
  - Strong in: Java or similar (Kotlin, Scala, C#)
  - Experience with: production microservices, distributed systems
  - Familiar with: messaging/event streaming (Kafka, Pulsar)
  - Solid relational database and data modeling skills
  - Nice-to-have: fintech, payments, ledger/accounting domains
  - Nice-to-have: event-driven architectures, CQRS, event sourcing
  - Nice-to-have: Micronaut, Quarkus or similar modern Java frameworks
  - US residency (regulatory requirement)

Benefits: - Competitive salary + equity - 401k with 3% match - Unlimited PTO + yearly vacation stipend - Full health/dental/vision - Paid parental leave - Regular team meetups - Bitcoin starter pack (hw wallet included)

Email tiffany.sawhney (a) foldapp.com if you have questions or apply here: https://ats.rippling.com/fold-inc/jobs/514ba20e-a93e-4960-ad... [0] https://foldapp.com

Rubin Observatory / SLAC | Menlo Park, CA REMOTE (US) | SRE / Software Engineer | Full-time

The Vera C. Rubin Observatory in Chile is a new world-class astronomy facility designed to create a 10-year time-lapse map of the southern sky. Featuring the world’s largest digital camera it emits 20GB of raw pixels per minute, and we are developing the Prompt Processing System that will distribute an alert on every astrophysical object that has moved, changed or appeared in real-time. (https://rubinobservatory.org/news/first-alerts)

This appointment is based at SLAC, a DOE-funded national laboratory hosting the data facility and many of the 80 scientists and engineers of the world-wide Rubin Data Management team. (https://www6.slac.stanford.edu/)

Keep Rubin's Alert Stream flowing. We are hiring an SRE to own the reliability of our Prompt Processing Framework, a Kubernetes-based, event-driven system using KEDA, Redis Streams, Kafka, and Postgres to scale near-real-time processing. You’ll write software to improve resilience, operate and evolve core infrastructure services, and build the monitoring, alerting, and on-call practices that keep the system robust and reliable during nightly observing operations.

Stack: Python, Kubernetes, Helm, ArgoCD, Kafka, Redis, KEDA, InfluxDB, PostgreSQL, Cassandra.

Details and apply here: ls.st/sre-ad

Ro | NYC | Hybrid (2 days/week in-office) | Full-time

Senior/Staff Python Engineers for our patient experience and core teams!

Ro is building an end-to-end healthcare platform (telehealth + labs + pharmacy) used by 2M+ patients. We’re hiring senior backend engineers who want e2e ownership: you’ll drive projects from problem framing → architecture → shipping incremental improvements → measurement and iteration, partnering closely with product/design/clinical.

What you’ll own: - Lead critical initiatives end-to-end with team members - Make pragmatic architecture decisions and raise the bar on quality (observability, performance, correctness) - Coach/lead through influence: reviews, design docs, unblocking, setting standards - Ship in small slices with measurable outcomes (not “big bang” rewrites)

Stack: Python, FastAPI, Postgres, AWS, Redis, Kafka/queues, Docker/K8s, observability tooling

Open roles (apply here): https://ro.co/careers/#open-roles

Other roles we’re also hiring for: SRE, iOS, and a few leadership roles (see job board).

Adobe| Staff Software Engineer- Backend Realtime CDP| In office- San Jose, CA/New York, NY/ San Francisco, CA| Full time

Adobe is hiring senior engineers to scale the Real-Time Customer Data Platform, which processes trillions of events to power real-time personalization for global brands. This is deep, low-latency distributed systems work - not typical enterprise app dev.

Location: San Jose, CA/New York, NY/ San Francisco, CA Type: Onsite- Hybrid work

We use: Java, Scala, Spring Boot, Kafka, Spark, Flink, Cosmos DB, Aerospike, FoundationDB, Delta Lake, K8s, Azure/AWS, Docker, OpenAI, Vector DBs.

Looking for: • 8+ years building large-scale distributed or streaming systems

• Strong backend skills (Java/Scala, concurrency, perf tuning)

• Experience with Kafka/Spark/Flink and cloud-native systems

Bonus: Martech/Adtech, identity resolution, or personalization experience.

For more details, email me at skatkar@adobe.com with "HN" in the subject

Apply here:https://careers.adobe.com/us/en/job/ADOBUSR160198EXTERNALENU...

BillionToOne (NASDAQ: BLLN) | Senior Software Engineers | Menlo Park, CA | HYBRID (2-3 days/week) | $280K-307K total comp + equity

BillionToOne builds molecular diagnostics that detect disease at the single-molecule level. Our prenatal test is the only non-invasive screen for both recessive conditions and aneuploidies from one blood draw. Our oncology platform finds 50%+ more cancer treatment options than standard testing. Over 1 million tests processed to date. Every line of code here has a patient on the other end of it.

Revenue grew from $0 to ~$300M in four years, guiding $415-430M for 2026. Publicly traded and GAAP profitable. You'll work alongside clinicians and computational biologists on genuinely hard problems: scaling genomic pipelines, building digital infrastructure for complex test results, and shipping systems where correctness isn't optional.

Hiring across software engineering:

- Senior Software Engineer, Digital Experiences (Oncology and Prenatal)

- Senior Software Engineer, Oncology

- Senior Software Engineer, Prenatal

- Senior AI Engineer

Stack: Python, Django, Postgres, React, TypeScript, AWS, Docker, Terraform, Kafka, CircleCI, Datadog. AI-assisted dev tools (Cursor, Copilot, Claude Code).

Benefits: Access to the latest AI tools and models with unlimited usage to help you do your best work, 100% paid medical on select plans, 16 weeks fully paid parental leave, 401(k) with 4% match, daily catered lunch, on-site gym. Forbes Best Startup Employers 2024 & 2025.

Apply: https://www.billiontoone.com/careers/open-positions