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Seeking an experienced Senior Data Engineer to build and maintain a cloud-based data platform using Airbyte, Apache Airflow, dbt, Amazon Redshift, Apache Superset, AWS, Python, and SQL.
Responsibilities:
• Build scalable ELT pipelines and data integrations.
• Develop/customize Airbyte connectors and Python API integrations.
• Orchestrate workflows with Airflow.
• Create dbt models and analytics-ready data warehouses.
• Build dashboards in Superset.
• Ensure data quality, monitoring, and AI-ready architecture.
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Core scope
Design the overall solution architecture and modular automation framework.
Develop Infrastructure-as-Code modules using Terraform for repeatable infrastructure provisioning.
Develop Ansible roles and playbooks for Linux preparation, prerequisites, configuration management, and software deployment.
Automate IBM Db2 software installation and validation.
Automate Db2 instance creation, fenced-user configuration, ports, services, and environment configuration.
Automate database creation and standard configuration.
Develop parameter-driven automation supporting different environments and configurations.
Automate Db2 fix-pack installation with pre-checks, backup/configuration capture, controlled execution, validation, and rollback considerations.
Develop major-version upgrade workflows, including readiness checks and post-upgrade validation.
Automate Db2 HADR primary/standby deployment and configuration.
Automate HADR initialization, synchronization checks, role validation, takeover procedures, and reintegration workflows.
Develop Pacemaker/Corosync high-availability deployment and configuration automation.
Implement cluster health validation and controlled failover/failback workflows.
Develop database, instance, HADR, OS, filesystem, storage, and cluster health-check tooling.
Develop Db2 audit configuration and audit-data management automation.
Develop backup, restore, and recovery automation.
Implement structured logging, error handling, configuration validation, and execution summaries.
Create testing and validation procedures for individual modules and end-to-end workflows.
Prepare technical documentation, architecture diagrams, deployment guides, operating procedures, troubleshooting documentation, and release documentation.
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We are seeking an experienced frontend developer to support the development and integration of an EVM-based decentralized application.
The project involves building secure smart contracts, connecting them to an existing Next.js application, and ensuring that wallet connections, signatures, transactions, events, and contract data are handled reliably.
## Project Tasks
* Develop and update Solidity smart contracts based on provided specifications.
* Integrate contracts with a Next.js and TypeScript application.
* Implement wallet connection, network switching, transaction submission, signature verification, and transaction-status handling.
* Build reusable contract interaction modules using viem, wagmi, ethers.js, or equivalent tools.
* Create deployment and contract-verification scripts.
* Write unit, integration, fuzz, fork, or invariant tests using Foundry or Hardhat.
* Diagnose contract reverts, gas-estimation errors, RPC issues, and wallet-integration problems.
* Review the implementation for security risks, edge cases, gas usage, and code quality.
* Document contract interfaces, deployment steps, configuration requirements, and integration flows.
## Required Experience
* Strong Solidity and EVM development experience.
* Experience with Foundry or Hardhat.
* Experience integrating smart contracts with Next.js and TypeScript.
* Knowledge of viem, wagmi, ethers.js, wallets, signatures, events, and token standards.
* Understanding of access control, contract security, transaction lifecycle, and testing practices.
* Ability to produce maintainable code and clear documentation.
Experience with DeFi, attestations, registries, decentralized identity, account abstraction, or upgradeable contracts is helpful.
## Deliverables
* Completed Solidity contracts and application integrations.
* Automated test coverage.
* Deployment and verification scripts.
* Technical documentation.
* Source code submitted through the agreed repository workflow.
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Szukamy osoby, która chce tworzyć automatyzacje i aplikacje low-code z wykorzystaniem narzędzi takich jak n8n, Make, Claude Code, Python oraz innych podobnych technologii.
Czym będziesz się zajmować?
projektowaniem i tworzeniem automatyzacji procesów,
budową aplikacji low-code,
integrowaniem różnych systemów i API,
wykorzystywaniem narzędzi opartych o sztuczną inteligencję w praktycznych rozwiązaniach.
Szukamy osoby, która:
interesuje się automatyzacją, programowaniem i sztuczną inteligencją,
lubi eksperymentować z nowymi narzędziami i technologiami,
potrafi samodzielnie szukać rozwiązań i uczyć się nowych rzeczy.
Nie wymagamy klasycznego procesu rekrutacyjnego. Możesz wysłać CV, ale równie dobrze może to być portfolio, opis projektów, link do GitHuba, krótka wiadomość lub dowolna forma, która najlepiej pokazuje, kim jesteś, co lubisz, czym możesz się pochwalić :)
Jeśli automatyzowanie, optymalizowanie, usprawnianie pracy i AI to coś, co naprawdę Cię interesuje – chętnie Cię poznamy.
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StableNaira is looking for a Senior Blockchain Engineer to build secure fintech infrastructure for payments, wallet integrations, liquidity movement, and digital asset settlement.
Responsibilities
* Develop, test, and maintain Solidity smart contracts.
* Build backend services, APIs, and transaction-processing systems.
* Integrate wallets, blockchain APIs, and EVM-compatible networks.
* Improve gas efficiency, transaction reliability, and settlement performance.
* Support architecture planning, security reviews, testing, CI/CD, monitoring, and documentation.
* Troubleshoot blockchain, backend, and distributed-system issues.
* Collaborate with engineering, product, DevOps, and compliance teams.
Requirements
* 4+ years of professional software development experience.
* Strong Solidity, smart contract, and EVM knowledge.
* Backend experience with Node.js, TypeScript, Go, or Python.
* Experience with Web3 libraries, wallets, APIs, databases, and REST services.
* Understanding of smart contract security, gas optimization, and reliable transaction processing.
* Familiarity with Docker, Kubernetes, distributed systems, or CI/CD.
* Strong communication, debugging, and independent remote-working skills.
Nice to Have
Experience with stablecoins, DeFi, fintech, Layer 2 networks, bridges, audits, high-availability systems, or open-source blockchain projects.
Work Arrangement
Fully remote, direct engagement with StableNaira. Full-time or long-term contract options are available.
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Zlecę stworzenie skryptu, który przez oficjalne API Allegro będzie codziennie wyszukiwał popularne, ale wyprzedane/zamknięte oferty w wybranych przeze mnie kategoriach.
Działanie bota:
Pobiera listę aktywnych ofert ze wskazanych kategorii i zapisuje w bazie te z wysoką sprzedażą (np. >50 sztuk).
Przy kolejnym skanie sprawdza ich status. Jeśli oferta została zamknięta lub stan spadł do 0, skrypt to wychwytuje.
Generuje codzienny raport (Excel/CSV) z listą tych produktów.
W raporcie potrzebuję: Nazwa przedmiotu, Kategoria, Kod EAN (GTIN), Cena oraz liczba sprzedanych sztuk przed zamknięciem.
Proszę o podanie ceny, czasu realizacji oraz informacji o doświadczeniu z API Allegro.
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I am looking for a reliable freelance technical assistant to help with small software testing, browser automation, API checking, and documentation tasks.
The work may include testing web applications, checking forms and workflows, preparing simple automation scripts, reviewing API responses, documenting bugs, and helping organize technical findings in a clear way.
This is suitable for someone with free time, good communication, and basic coding or QA experience. The work will be remote and task-based. I prefer someone who can communicate clearly, follow instructions, and provide regular updates.
Important: all work must be done legally and professionally. No account sharing, identity misuse, or representing another person.
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At EyeLabX, we’re building the first eye wellness ecosystem that combines digital health, token incentives, and community governance. We believe healthy screen habits should be rewarded, and that users, doctors, and developers should co‑own the future of digital eye care.
We are a small, remote‑first, early‑stage team. Our first product is a desktop app that helps people reduce eye strain. Our roadmap includes a token reward system, a DAO for community decisions, and eventually a platform where users can securely share eye health data with verified doctors and earn rewards for participating in better treatment outcomes.
We’re looking for a Founding Blockchain & Full-Stack Developer to take ownership of our token infrastructure, smart contracts, and the Web3 frontend that connects users to rewards and governance.
Our Mission
To make eye wellness effortless, rewarding, and trustworthy – by putting users in control of their data and their incentives.
Our Values (How We Work)
These aren’t posters on a wall. They are the filters we use to make decisions.
- Ship, then iterate. We value working software over endless planning. But we never trade security for speed – especially when user funds or data are involved.
- Own the outcome. You build it, you run it, you learn from it. No hand‑offs to invisible teams.
- Ask “what could break?” We proactively look for edge cases, especially in smart contract logic and reward distribution. We don’t wait for an exploit to care.
- Build with transparency. Our code, our roadmap, and our mistakes are shared openly with our community. We trust that this earns real loyalty.
- Stay small, think big. We prefer a handful of focused, high‑ownership engineers over a crowded room of bystanders.
The Role: Founding Blockchain & Full-Stack Developer
You will be the first dedicated blockchain engineer on the team. You will work directly with the founder and eventually collaborate with external auditors and community contributors.
What you’ll own:
1. Smart Contract Development (EVM)
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About Us
We are a game development and Web3 innovation company building blockchain-powered gaming platforms, token ecosystems, and decentralized applications. We are looking for a talented Web3 DApp Developer to join our team and contribute to the development of innovative blockchain products.
Responsibilities
Design, develop, and maintain Web3 decentralized applications (DApps).
Integrate smart contracts with frontend and backend systems.
Implement wallet connectivity using solutions such as MetaMask and WalletConnect.
Develop secure and scalable blockchain-based features.
Collaborate with smart contract, frontend, and backend developers.
Participate in code reviews, testing, and performance optimization.
Troubleshoot and resolve blockchain-related technical issues.
Contribute to architecture and technical design discussions.
Requirements
Proven experience building Web3 applications.
Strong knowledge of JavaScript and TypeScript.
Experience with React.js, Next.js, or similar frontend frameworks.
Experience integrating wallets and blockchain networks.
Strong understanding of smart contract interaction.
Experience with Web3 libraries such as Ethers.js, Web3.js, Wagmi, or Viem.
Familiarity with blockchain security best practices.
Experience using Git and collaborative development workflows.
Preferred Qualifications
Experience with Solidity smart contracts.
Experience with Ethereum, Polygon, BNB Chain, Solana, or other blockchain ecosystems.
Experience developing DeFi, NFT, GameFi, or token-sale applications.
Understanding of token standards such as ERC-20, ERC-721, and ERC-1155.
Experience working in gaming, blockchain, or startup environments.