Software Engineer (w/m/d) | Berlin | Onsite | Media4Care

We build tech: digital assistants that help caregivers and seniors live with more joy. Small senior team, big impact.

Stack: TypeScript (full-stack), React Native, GraphQL, Postgres, Bedrock (Claude/Llama), Transcribe, pgvector RAG, SageMaker + Inferentia2, VPC + KMS, Guardrails.

Work: End-to-end feature ownership, product thinking, clean abstractions, meaningful AI/LLM integration.

You: 5+ years experience, strong programming skills, can think in tradeoffs, not just libraries.

Why us:

Purpose > vanity metrics (healthcare, not adtech)

Autonomy + flat team

Modern stack, real-world constraints (accessibility, privacy, offline)

Process: short written Qs → intro call → 4–6h real-world coding/product challenge → tech discussion → fast offer.

Apply: https://m4c.jobs.personio.de/job/2019549

Location: New Jersey, USA Remote: Yes

Willing to relocate: No

Technologies: JavaScript, TypeScript, React, React Native, Redux, Next.js, Prisma, Apollo, GraphQL, Node, Python, PostgreSQL, Supabase, UI/UX, WordPress, CSS, SCSS, CSS-in-JS

Résumé/CV: https://drive.google.com/file/d/1TNbJYF9beS_gw2Ct5wqsD30Zq6b...

Website: https://tyrpien.com

Linkedin: https://www.linkedin.com/in/bartlomiej-tyrpien-a1708968

Github: https://github.com/bartlomein

Email: bartlomiej.tyrpien@gmail.com

Introduction: Full Stack Software Engineer with 8+ years of experience building scalable, high-performance software solutions across fintech and digital platforms. Skilled in front-end and back-end development, API design, and team leadership, with a focus on creating user-centric applications and driving performance improvements.

Absinthe Labs | Full-Stack Engineer | REMOTE / NYC Hybrid | Full-Time

About us: Absinthe is building the most sophisticated gamification engine for crypto-native incentive programs. Since 2022, our products have reached 50M+ visits and 2M+ active users. We’re a 10 person, well-funded team shipping fast.

The problem we’re solving: Tracking per-user activity across DeFi protocols sounds simple but is surprisingly hard. Want to know how long someone held an LP position, or which users provided liquidity for more than 30 days? That data is on-chain but can’t be efficiently queried today.

We built an indexing framework that turns protocol events into time-weighted balances and point-in-time actions. Adapters map protocol-specific semantics (Uniswap ≠ Aave ≠ Morpho) into a unified model. The engine handles state, TWAP pricing, and exporting data anywhere. With ~100 lines of adapter code, you can track user balances and contributions at a fidelity no one else supports.

Why it matters: This infrastructure underpins analytics, loyalty, and incentive programs across Web3. We see the Absinthe Adapter Library becoming the default developer layer for embedded finance.

The role: We’re hiring a Full-Stack Engineer to own features end-to-end schema design, wiring GraphQL, polished frontends, and deployment. Our stack: Next.js, Hasura, dbt, MotherDuck/DuckDB, GraphQL, and in-house Web3 indexing. See open positions here: absinthe.network/careers#open-positions

Get involved: - Explore product functionalities at: https://guides.absinthe.network

- Explore the Adapter Library docs: https://docs.absinthe.network/

- Join our Slack community to hack on adapters and connect with the team: https://join.slack.com/t/absinthecommunity/shared_invite/zt-...

VoucherCodes | Senior Mobile Engineer (React Native) | London, UK (Hybrid, 1 day/month in office) | Full-time (No sponsorship at this time)

VoucherCodes is one of the UK's biggest money-saving sites, helping 8M+ people a month save money with brands like ASOS and Nike. Our apps are a critical part of our business, and we're looking for a Senior React Native engineer to take ownership of them.

Stack: React Native, Expo, TypeScript, GraphQL/REST, TanStack Query, Zustand, Jest, CI/CD (GitHub Actions), Fastlane, AWS.

Why us?

* Impact: Own the technical direction of an app used by millions. Opportunity to work on other popular B2C mobile apps. Be the voice on project estimations.

* Balance: Truly flexible hours (core 10am-4pm, flexible outside core). Only 1 day/month in our London office.

* Growth: Generous training & conference budget (we send people to AWS re:Invent), quarterly hackathons, and 3 dedicated personal dev days per quarter. Fluid teams where you can work on different things and learn different disciplines

* Culture: Supportive team focused on quality code and mature CI/CD. Office perks include free lunch, snacks, drinks and games (pool, foosball, consoles). Weekly social clubs and quarterly social nights

* Other perks: 8% for your 4% pension contribution. Life/Health/Dental insurance. Maternity (16+23+13 weeks) and paternity (10 weeks) leaves. And more!

Apply here: https://www.vouchercodes.co.uk/careers/8393

Looking forward to hearing from you!

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

Prophet Town LLC | Various Software Engineering Roles | US – Remote and Hybrid | English fluency required | Full-time | $150K-$250K annual total comp (multiple)

I’m the founder, trying to do “enlightened business.” We are a people-first, fully-remote, boutique indie tech agency – building a team of talented, high integrity, and community-minded individuals first, then building businesses around them. Our leadership staff are ex-Fortune 100; everybody touches code. Notable recent projects: internal tools for Anduril, and voltagepark.com.

We’re currently especially seeking:

Frontend Engineers (React, NextJS, Typescript; Animations, Performance optimization; sfbay local a plus)

Teamcenter and Odoo developers (C++/Java/Python; Siemens Teamcenter; Custom applications, workflows, data model updates)

IoT Developers (Python, MQTT, GraphQL, AWS, Test Infrastructure)

Full-Stack Software Engineers (React, Python, Ruby on Rails; Database Design, Devops, and third-party API integrations)

Please apply using this Google Form: https://forms.gle/3Hv6cwZzAzwqKMGz9. Applicants who submit before October 17 will typically receive a reply by October 24. Tier3 roles are typically 5-10 y/o/e with $150-$175k annual total comp. Tier4 roles are 11-20 y/o/e, $210-$250k annual total comp. Higher tiers exist, and we welcome exceptional applications.

ToucanTix | Senior Ruby on Rails Developer | REMOTE (EU/US timezones preferred)

Your code will run the gates at zoos and theme parks across Germany and the USA. When families scan tickets, when capacity limits kick in based on visitors and available resources (staff, equipment, facilities), when dynamic pricing adjusts for weather - that's our Rails app making real-time decisions for thousands of visitors daily.

We're 5 engineers at ToucanTix (sister company Combase has 80+). You'd have serious ownership and architectural influence from day one.

Technical challenges that actually matter:

Multi-tenant architecture supporting 100+ venues with wildly different business logic. Offline-first POS that syncs flawlessly. Complex pricing rules (weather + season + capacity + customer type) that need to stay performant. Hardware integrations with access control and payment systems.

Stack: Rails 7+ API with GraphQL (graphql-ruby), PostgreSQL doing serious heavy lifting with multi-tenant architecture, Redis for speed-critical stuff, SvelteKit frontend (if you're full-stack curious), Google Cloud infrastructure (Cloudtasker, Cloud Storage), RSpec/Capybara keeping everything bulletproof

You: 5+ years Rails. Strong at PostgreSQL optimization. Have architected systems for performance and scale. Comfortable owning technical decisions.

Us: Real ownership. No layers of management. Async-first remote culture. Profitable company, not burning VC cash. Your work has physical impact - people literally can't enter the attraction if your code breaks.

Full details: https://www.toucantix.com/careers/senior-ruby-on-rails-devel...

Apply: jobs@toucantix.com - Send CV + one technical challenge you're proud of solving. Put in subject line.

Sorare | Backend Software Engineer | ONSITE (Paris) | Full-time

Sorare is a fantasy sports gaming experience and marketplace featuring officially licensed digital player cards (minted as NFTs).

Tech Stack: PostgreSQL / Rails / GraphQL / React

We're hiring a replacement for a colleague who's leaving for a world tour.

If you want to read the objective offer you can find it below, but here is the subjective view of what makes me enjoy my job as a sofware engineer there:

- very competent and kind coworkers

- small team that moves fast and decides quickly

- passionate user community

- top work conditions

- bonus: as a sports fan this is heaven

Don't hesitate to reach to me if you have any question:hugo [at] sorare.com.

Read more: https://sorare.com/careers?jid=c81d9cc6-4fcc-472a-a927-e6941...

Comulate | Senior Engineer (3+ YoE) | ONSITE in San Francisco, CA

We're building automation software for the $7T insurance industry, accelerated by AI. Seed stage in terms of headcount (~ 20 people) but Series B in terms of business traction (+ cash-flow positive). We've intentionally stayed under the radar.

- Product has caused customers to literally cry tears of joy

- Experienced eng team from Airbnb / Brex / LiveRamp

- Stack: TS, Postgres, React, GraphQL, and Next.js

Apply here: https://comulate.com/careers

Chronograph (chronograph.pe) | Multiple roles | Full-Time | Remote (US) | $160-205K USD + equity

Chronograph was founded to bring next-generation technology to private capital markets. Through our suite of cloud-based analytics and data management solutions, we help many of the world’s largest and most sophisticated venture capital, private equity, and credit funds understand their investment performance in unprecedented detail.

* Senior Software Engineer (Platform Engineering): Bring your experience in Platform Engineering, DevOps, SRE and/or related experience to a small cross-functional team automating ops, troubleshooting infrastructure, and creating first-class developer experiences. Expertise with the following tools/technologies is a strong signal of fit: Kubernetes, Prometheus, Grafana, Terraform, AWS, GitHub Actions, PostgreSQL, Node.js, Ruby on Rails, Nix, and Docker. Nice to have: prior professional experience in backend or full-stack developments, and open source contributions.

* Senior Software Engineer I & II (Full Stack): Join a highly-driven team of engineers, contributing both as a technical leader and a hands-on full-stack developer. Own and lead technical projects from product ideation to successful execution. Expertise with the following tools / technologies is a strong signal of fit: React, Typescript, Node, PostgreSQL, and GraphQL.

Note that while these are remote-friendly positions, travel to our NYC HQ 3x/year for "team week” on-sites is required.

If interested, apply here: https://www.chronograph.pe/jobs/?gh_jid=4802825007

Estuary | US Based / Remote | Full-time – https://estuary.dev/

Estuary is a VC-backed startup building the next generation of real-time data infrastructure. Our platform, Estuary Flow, combines change data capture (CDC), stream processing, and declarative configuration to unify real-time and batch data movement.

We’re open-source, developer-first, and focused on making data engineering radically simpler.

Estuary is a small, high-trust team with deep experience in distributed systems, stream processing, and data tooling — and we’re growing quickly.

We’re hiring for:

Senior and Staff Backend Engineers (Integrations) – 5+ years of backend engineering experience. Proficiency in Go; Rust is a big bonus.

Own and scale high-impact systems that power real-time data pipelines. You’ll work on complex integrations with external APIs and databases, improve our internal connector frameworks, and tackle deep challenges in performance, reliability, and developer experience.

Fullstack Engineer (UI Team) – Our first fullstack hire, working across Rust + React/TypeScript. High-impact role shaping the customer experience: build GraphQL APIs, optimize Rust backend systems, and deliver product features end-to-end.

https://estuary.dev/about/#careers

What we’re looking for: Engineers who care about building reliable, maintainable systems and enjoy working with complex APIs and data flows. We value curiosity, clear communication, and a willingness to learn.

Bonus points for experience with CDC tools, open source contributions, or fast-paced startups.

To apply: Email your resume to careers@estuary.dev