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We're looking for an experienced systems engineer to help us set up a high-performance Android virtualization stack running on ARM-based servers (Ampere or similar). The goal is to create scalable, native ARM Android VM instances for development, testing, or emulation use cases.
🔧 Key Responsibilities:
Design and configure a virtualization layer (QEMU + KVM) for ARM Android VMs
Optimize for performance and scalability (many VMs per server)
Handle device emulation (e.g., sensors, GPS) as needed
Tune host and guest kernels for stability and efficiency
Provide guidance on infrastructure choices (e.g., OS, hypervisor settings, image formats)
✅ Must-Have Skills:
Strong experience with KVM/QEMU virtualization
Deep knowledge of ARM architecture and Linux internals
Familiarity with Android AOSP and/or GKI
Experience deploying and managing VMs at scale
Ability to document and automate the setup
💡 Nice to Have:
Experience with Ampere Altra servers or similar
Knowledge of Android app testing frameworks or CI/CD integration
Familiarity with virtio, cloud-init, or orchestration tools (e.g., Terraform, Ansible)
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We are a startup from Germany and are currently building a mobile app for a time-based rental system of physical units, secured by NFC-based locks. This project is part of a pilot launch planned for May 2026. The hardware supplier provides us with an SDK for controlling the electronic locks.
We are looking for a reliable and efficient developer or small team who can deliver a minimal viable product (MVP) – with clean, robust functionality and no unnecessary overhead.
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Looking for a developer to build an advanced chat application for the Invision Community engine (IC 4.7). Experience with IC and its documentation is required.
Budget: up to 2000 PLN
List of all chat features:
https://pastebin.com/9v2CUnXM
Please submit your offer before sending a message :)
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At NovaLayer Labs, we're building next-generation decentralized infrastructure and tools to empower digital sovereignty. Our current focus is on modular smart contract frameworks, zk integrations, and frictionless developer onboarding for L2 ecosystems. We're a nimble team of builders, researchers, and designers passionate about open-source, privacy, and composability.
Job Description
We're looking for a Web3 Developer to join our core engineering team. You’ll work on developing and maintaining smart contracts, backend services, and Web3 integrations for our flagship products. You should be comfortable working in a fast-paced startup environment, with a strong sense of ownership and autonomy.
Responsibilities
Write, test, and deploy smart contracts (Solidity / Vyper)
Integrate on-chain components with frontend interfaces (ethers.js/web3.js)
Build and maintain backend services (Node.js / Rust / Go) for Web3 interactions
Collaborate with product, design, and security teams to ship robust decentralized apps
Stay updated on the latest blockchain trends, standards (EIPs), and vulnerabilities
Participate in architecture discussions and code reviews
Requirements
2+ years of experience in blockchain or smart contract development
Solid understanding of Ethereum and EVM-compatible networks
Experience with Solidity (or Vyper), and smart contract tooling (Hardhat, Foundry, etc.)
Familiarity with basic cryptography (signatures, hashes, Merkle trees, etc.)
Experience integrating Web3 wallets (MetaMask, WalletConnect, etc.)
Git proficiency and collaborative development experience
Good communication skills and ability to work independently
Bonus Points
Experience with L2s (Optimism, Arbitrum, zkSync)
Familiarity with Rust/Substrate or Cosmos SDK
Contributions to open-source projects
Knowledge of zero-knowledge proofs or account abstraction
Experience working with DAOs or DeFi protocols
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We’re looking for a highly skilled network protocol and traffic fingerprinting expert to help us bypass JA3/JA4 detection methods across various layers (TCP/IP, TLS, HTTP). This is a specialized consulting role for someone deeply familiar with passive fingerprinting techniques and how to defeat them.
🧠 What You’ll Do:
Analyze our current fingerprint (JA3, JA4L, JA4H, JA4X) and propose hardening techniques.
Implement TLS stack spoofing using uTLS, OpenSSL, or other libraries.
Tune HTTP header order/casing to evade JA4H fingerprints.
Modify TCP/IP-level behavior to avoid JA4X detection (window size, MSS, options).
Build or configure proxy relays/middleboxes that rewrite TLS handshakes.
Simulate or route traffic through real browser environments (headful or mobile).
Optionally: Implement stealth automation using Playwright or Puppeteer + stealth techniques.
✅ Skills & Requirements:
Proven experience defeating JA3/JA4 or similar detection methods.
Deep knowledge of TLS handshakes, cipher suites, extensions.
Familiar with TCP/IP fingerprinting techniques.
Experience with Go (uTLS), Python (mitmproxy, scapy), or C/OpenSSL.
Familiarity with fingerprinting datasets (e.g. fingerprintjs, Splunk JA4 datasets).
Bonus: Familiarity with anti-bot detection systems (Cloudflare, Akamai, DataDome, etc.).
💻 Tools You Might Use:
uTLS (Go)
mitmproxy
Tcpreplay / Scapy
curl + custom OpenSSL
🎯 Project Scope:
We are building an application that needs to blend in with normal consumer traffic to avoid detection or fingerprinting. This is not for malicious purposes — it is for ensuring traffic privacy and obfuscation under surveillance-heavy conditions.
🕒 Engagement:
Initial contract with potential for longer-term collaboration.
Flexible hours, async-first communication.
We can move fast if you’re available immediately.
🚀 Apply If You:
Have bypassed or neutralized fingerprinting systems in production.
Understand the internals of TLS and HTTP at the protocol level.
Think like a network defender
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Scope of action
1. entering in the application the town to which the phone would switch at a certain time ie:
Warsaw 08:01 - 09:00 Lodz 09:01-10:00 Czestochowa 10:01-11:00 Katowice 11:01-12:00 Bielsko-Biala 12:01-13:00 etc Rzeszow 07:00-08:00
The important thing with this is that chrome, google so receive this information is that there is a change of location. That is, when you run g-g.pl and search for phrases, it indicated that it searches for them at given times in the indicated locations.
Deadline for completion 5 days
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Programmer wanted to finish a chat application for a forum with an IPS engine. The chat was partially coded by another programmer, but for personal reasons he decided to pass on the order. Experience with an IPS engine is welcome.
Who I'm looking for: programmer (teams/companies - no thanks)
Budget: up to PLN 1000
Entire order: https://pastebin.com/0JU1Chhj
Please submit an offer before writing a message :).
Needed yesterday 😅.
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Frontend Developer (Angular + Tailwind CSS)
Tworzymy nowoczesny system ERP bez korporacyjnego nadęcia.
Frontend powstaje w Angularze (v16+) z Tailwind CSS, bez gotowych frameworków komponentów. UI budujemy modularnie, logicznie i z pełną kontrolą nad kodem.
🔹 Pracujemy z głęboko zagnieżdżonymi danymi (np. Task → Project → Customer),
🔹 UI powstaje od zera w Tailwind CSS – bez gotowców,
🔹 Angular + Signals + własny Store – zero NgRx,
🔹 Minimalizm, przejrzystość i UX nawet w złożonych formularzach.
Kogo szukamy?
- Umiesz tworzyć komponenty Angular (Standalone Components),
- Znasz bardzo dobrze Tailwind CSS i wiesz, jak tworzyć w nim spójny, responsywny UI,
- Radzisz sobie z danymi zagnieżdżonymi i logiką zależną od ról,
- Potrafisz pisać zwięzły, czytelny kod bez nadmiaru klas.
Stack technologiczny:
Angular 16+, Tailwind CSS, TypeScript, NX, Firebase
Wyzwania w projekcie:
- Tworzenie UI bez bibliotek komponentów,
- Praca z danymi o złożonej strukturze (projekty, zadania, czas pracy),
- Responsywność, czytelność i prostota interfejsów,
- Tailwind CSS jako jedyne źródło stylów.
Dobrze, jeśli:
- Umiesz tworzyć layouty z użyciem Tailwind Grid i Flex,
- Wiesz, jak optymalnie używać klas responsywnych (sm:, md:, lg:, etc.),
- Potrafisz zachować czytelność przy dłuższych sekwencjach klas,
- Umiesz stosować dark mode, grupowanie klas i `@apply`, gdy to potrzebne.
Co oferujemy:
- Elastyczna forma współpracy (freelance / B2B),
- Czytelny kod, klarowne wymagania,
- Wsparcie, ale też wymaganie Twojej samodzielności.
Zainteresowana / zainteresowany?
Daj znać! Możesz podlinkować portfolio, repozytorium lub opisać ciekawy projekt, który zrealizowałaś/zrealizowałeś.
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We need an experienced full stack dev with React to help build a fact-checking webapp. Think of it as a lightweight dispute resolution system.
The goal is to allow users to evaluate content (text, image, video) in a structured way, with confidence scoring, claim categorization, and a transparent resolution process. Contributions are assessed and rewarded via a reputation system.
We’re looking for a mid/senior developer to help us architect the whole system and execute the app from scratch.
This will include both UI work (submission and voting flows, dashboards) and backend logic (confidence scoring, eligibility checks, reputation). Clear specs and product guidance will be provided.