IdeaSoft

We’re hiring a Security Engineer/Architect with Blockchain experience who thrives in fast-moving environments, understands
technical depth, and can independently own security across multiple areas — from architecture and infrastructure to monitoring and investigations.
You’ll be joining a lean team with serious responsibilities — context switching and high autonomy are part of the job. The role is ideal for someone who prefers deep thinking over surface-level “best practices”.
You’ll play a key role in securing our systems and eventually take ownership of technical implementation and decision-making.
We are building a range of products — from an advanced crypto payment solution evolving into a full blockchain ecosystem with real-world impact, to a comprehensive platform featuring its own blockchain, non-custodial wallet, and stablecoin protocol designed for diverse use cases.

Requirements

• 5+ years in security engineering, with hands-on experience in DevSecOps and, preferably, Web3;
• Deep understanding of blockchain technologies and integration methods.
• Solid understanding of containerized infrastructure, Kubernetes
• Proven experience working with cloud platforms (AWS, GCP, any experience with bare metal infrastructure will be a huge plus);
• Deep understanding of security principles, such as least privilege, defense in depth, secure defaults, and trust boundaries;
• Strong knowledge of network security (e.g., TLS, VPNs, firewall rules, intrusion detection);
• Familiarity with common vulnerabilities and exploit patterns (e.g., SQLi, XSS, CSRF, SSRF, RCE);
• Understanding of encryption fundamentals (symmetric/asymmetric cryptography, key rotation, secure storage);
• Practical experience with identity and access management (IAM, RBAC, MFA, OAuth2, SSO);
• Proven track record securing production infrastructure (and SDLC as a whole). This also includes implementation and maintenance of the following:
• SIEM platforms;
• SAST/DAST tools;
• Infrastructure as Code (IaC) security scanning tools;

• Secrets management (any experience with highly secure HSM stores will be highly appreciated);

   

Would be a plus

• Expertise in blockchain solutions, VMs, and smart contracts, any prior Solidity experience will be a huge plus;
• Experience with high-performance transaction systems and distributed systems.
• Strong knowledge of microservices patterns, API design, and message brokers (e.g., RabbitMQ, Kafka).
• Familiarity with security policies and standards (e.g., NIST, ISO27001, CIS Benchmarks);
• Experience conducting or preparing for security audits or compliance assessments (SOC2, GDPR, etc.);
• Creating and maintaining playbooks for security incidents, access reviews, and response procedures;

Responsibilities

• Own and maintain internal security tooling (e.g., scanners, linters, alerting systems);
• Design, configure, and maintain security controls across infrastructure (firewalls, IAM policies, network segmentation);
• Continuously update threat models based on real usage and emerging attack patterns;
• Own access control systems for internal and on-chain resources (e.g., multisig ops, key custody, signer policies);
• Perform static and dynamic analysis of codebases, including integrating SAST/DAST tools into CI/CD;
• Stay up to date with emerging vulnerabilities, test their impact on internal systems, and patch proactively;
• Drive the integration of inner account ecosystem projects, ensuring smooth operation;
• Work with DevOps and other product teams to secure cloud and containerized infrastructure;
• Participate in optimization of the platform’s performance, reliability, and fault-tolerance capabilities;
• Act as a technical advisor, mentoring development teams and ensuring architectural consistency.
• Participate in design and implementation of secure architecture across all blockchain layers (Execution, Consensus, etc.);
• Manage security procedures for all core and periphery blockchain tools (explorer, validator portal, etc.);

We are building an API-first loan management and servicing platform to enable scalable, compliant, and flexible financial products. Our client is expanding their US-based team and looking for a Senior Python Engineer to join the extended development team, contributing to new functionality and the evolution of the SaaS platform.

Tech Stack: Python, Go, React, Redis, PostgreSQL, GCP, ElasticSearch

Responsibilities

• Develop and implement new features for the loan management system
• Lead the development of a loan management SaaS platform
• Build robust, scalable infrastructure for new services and products
• Collaborate with product and design teams to evaluate trade-offs and scalability concerns
• Work closely with legal and compliance stakeholders to ensure product compliance

Requirements

• 5+ years of backend software development experience (preferably in Agile environments and SaaS products)
• 2+ years of hands-on experience with Python
• Strong expertise in API design and development
• Experience building microservices architectures
• Ability to write clean, reliable, and maintainable code with automated testing
• Previous startup experience or working in small, cross-functional teams

Nice-to-Have

• Background in FinTech (strong plus)
• Experience with DevOps practices
• Familiarity with GCP
• Knowledge of Go

We offer:

• Competitive compensation
• Social package (24 working days of annual leave, 5 paid sick days)
• Flexible working hours
• Challenging projects in diverse business domains and a variety of tech stacks
• Personal development and professional growth opportunities
• Work with talented, ambitious and family-feel teams
• Educational possibilities: corporate courses, knowledge hubs, and in-house English classes
• Compensation for your professional certification & support for your learning activities
• Opportunity to choose IT equipment you like
• Corporate social responsibility

We are looking for a Senior Node.js Developer (Blockchain Project).

We are building a next-generation ecosystem with a blockchain as its foundation, a non-custodial wallet, and a stablecoin protocol. After a successful demo, the project is now preparing the core components (blockchain + stablecoin) for launch. In parallel, development has started on additional secured projects, including:

• A document management system,
• A country-specific solution,
• An e-invoicing platform,
• And several other ecosystem modules ready to begin.

Tech Stack

• Node.js / TypeScript, NestJS
• PostgreSQL, Redis / Valkey
• L2 blockchain (interaction with other networks)
• Docker, Kubernetes (bare-metal & cloud infrastructure)

Responsibilities

• Write efficient, maintainable code;
• Design and implement independent, self-sufficient components efficiently;
• Participate in architectural discussions and technical decision-making;
• Identify potential technical risks and develop mitigation strategies;
• Ensure effective knowledge sharing and maintenance within the team;
• Foster a collaborative and innovative development environment;
• Perform cross code reviews with team members;
• Properly maintain documentation.

Requirements

• 4+ years of experience with server-side JS/TS;
• Solid understanding of TypeScript and JavaScript fundamentals and internals;
• Experience with Express, NestJS, or similar frameworks;
• Strong understanding of asynchronous programming, event-driven architecture, and non-blocking I/O;
• Understanding of different types of scaling and microservice architectures in various implementations;
• Hands-on experience with Web3.js or Ethers.js for interacting with Ethereum or other EVM-compatible networks;
• Understanding of smart contracts;
• Familiarity with popular blockchains such as Ethereum, Binance Smart Chain, or Layer 2 solutions;
• Expertise in data structures, algorithms, and software design patterns;
• Solid understanding of software architectural patterns;
• Experience with relational databases (especially PostgreSQL);
• Deep experience with SQL (including schema/query design and optimization);
• Experience with ORMs;
• Familiarity with Docker, containerization, and orchestration tools;
• Strong analytical and problem-solving skills;
• Proficiency in writing unit, integration, and end-to-end tests;
• Conversational English.

Will be a plus

• Familiarity with DevOps practices and Infrastructure-as-Code (IaC) tools;
• Understanding of consensus algorithms, cryptographic principles, and decentralized applications (dApps);
• Familiarity with Matter Labs’ zk stack;
• Experience in the FinTech domain;
• Understanding of different rollup technologies;
• Openness to technology stack changes and adaptability.

We are looking for a Lead Node.js Developer (Blockchain Project).

We are building a next-generation ecosystem with a blockchain as its foundation, a non-custodial wallet, and a stablecoin protocol. After a successful demo, the project is now preparing the core components (blockchain + stablecoin) for launch. In parallel, development has started on additional secured projects, including:

• A document management system,
• A country-specific solution,
• An e-invoicing platform,
• And several other ecosystem modules ready to begin.

Tech Stack

• Node.js / TypeScript, NestJS
• PostgreSQL, Redis / Valkey
• L2 blockchain (interaction with other networks)
• Docker, Kubernetes (bare-metal & cloud infrastructure)

Responsibilities

• Write efficient, maintainable code;
• Design and implement independent, self-sufficient components efficiently;
• Participate in architectural discussions and technical decision-making;
• Identify potential technical risks and develop mitigation strategies;
• Ensure effective knowledge sharing and maintenance within the team;
• Foster a collaborative and innovative development environment;
• Perform cross code reviews with team members;
• Properly maintain documentation.

Requirements

• 6+ years of experience with server-side JS/TS;
• Perfect understanding of TypeScript, JavaScript fundamentals, and internals;
• Strong experience with NestJS;
• Experience with various ORMs;
• Understanding of different types of scaling and microservice architectures in its different implementations;
• Expertise in data structures, algorithms, and software and architectural design patterns;
• Proven ability to make architectural decisions and foresee potential issues that different decisions may cause;
• Proven ability to develop large ecosystem products with shared components;
• Expertise with popular EVM-compatible blockchains (L1/L2s) and understanding of their internal mechanics;
• Experience with various database engines (both relational and non-relational), including schema/query design and validation;
• Ability to choose and apply other technologies when needed (beyond JS/TS and their frameworks);
• Experience with Docker, containerization, orchestration tools, and familiarity with DevOps practices and Infrastructure-as-Code (IaC) tools);
• Experience with production systems and their lifecycle;
• Strong analytical and problem-solving skills;
• Proven ability to manage several cross-functional teams of varying sizes with partially shared responsibilities;
• Proficiency in writing unit, integration, and end-to-end tests;
• Conversational English.

Will be a plus

• Understanding of consensus algorithms, cryptographic principles, and decentralized applications (dApps);
• Familiarity with Matterlabs’ zk stack;
• Experience in FinTech domain;
• Understanding of how different rollup technologies work;

• Openness for technology stack change and adaptiveness.
   

  We offer:

• Competitive compensation;
• Social package (24 working days of annual leave, 5 paid sick days);
• Flexible working hours;
• Challenging projects in diverse business domains and a variety of tech stacks;
• Personal development and professional growth opportunities;
• Work with talented, ambitious and family-feel teams;
• Educational possibilities: corporate courses, knowledge hubs, and in-house English classes;
• Compensation for your professional certification & support for your learning activities;
• Opportunity to choose IT equipment you like;
• Corporate social responsibility.