SolvIT AS

About the Role

We're looking for a Senior Full-Stack Python Engineer to join a fast-growing startup building AI-powered products.

This is a hands-on engineering role where you'll work directly with the founders, own features end-to-end, and contribute to both technical and product decisions. Approximately 70% of your work will focus on backend development using Python, Django, and SQL, while 30% will involve React-based frontend development.

We're looking for someone who enjoys ownership, thrives in a fast-paced environment, and is comfortable using modern AI coding tools to accelerate development.

What You'll Do

• Design, develop, and maintain backend services using Python and SQL
• Build scalable APIs and production-ready backend systems
• Develop and enhance frontend features using React
• Take product features from idea through implementation and production
• Work directly with founders, engineers, and customers to shape product functionality
• Debug production issues and implement long-term solutions
• Make practical engineering decisions balancing speed, quality, and maintainability
• Contribute to architecture and technical direction
• Leverage modern AI coding assistants and agentic coding workflows to improve productivity

Must-Have Requirements

• 5+ years of professional software development experience
• Strong commercial experience with Python
• Strong SQL skills and experience with relational databases
• Experience building and deploying production software used by real customers
• Full-stack development experience with a strong backend focus
• Experience designing APIs and backend services
• Ability to independently own features from concept to production
• Experience using AI coding assistants or agentic coding workflows
• Strong debugging and problem-solving skills
• Product-oriented mindset
• Strong English communication skills
• Comfortable working in a fast-paced startup environment
• Availability to overlap with New York business hours

Nice to Have

• Commercial experience with Django
• Experience with React and JavaScript
• Experience with Pandas and dataframe-based data processing
• Experience with Node.js
• Experience with AWS or another major cloud platform
• Experience building AI-powered products, LLM applications, autonomous agents, or workflow automation
• Experience in B2B SaaS, sales tech, marketing tech, or data enrichment platforms
• Experience working directly with customers
• Previous technical leadership experience
• Startup experience

What We're Looking For

• Strong ownership mindset
• Ability to work independently with minimal supervision
• Practical engineering approach focused on delivering value
• Passion for clean, maintainable software
• Comfortable working in an environment with significant ownership and limited bureaucracy

About the Role

We are looking for an experienced Senior Blockchain Developer with deep expertise in the Bitcoin protocol to join a long-term project building institutional-grade Bitcoin wallet and custody infrastructure.

This is not a general blockchain role. We’re looking for engineers with real production experience working with Bitcoin, including transaction construction, UTXO management, multi-signature workflows, fee optimization, and wallet infrastructure at scale.

What You’ll Do

• Design and develop secure Bitcoin wallet infrastructure
• Build and maintain transaction construction and signing workflows (PSBT, SegWit)
• Implement UTXO management, balance tracking, and wallet recovery mechanisms
• Develop multi-signature coordination and signing flows
• Optimize transaction fee estimation and fee bumping strategies (RBF, CPFP)
• Monitor transaction lifecycle and implement remediation strategies for unconfirmed transactions
• Develop backend services using Java and Spring Boot
• Collaborate across engineering teams within a shared monorepo environment
• Contribute to architecture, code reviews, and technical discussions
• Write high-quality, well-tested code using TDD/BDD practices

Requirements

Must Have

• 3+ years of production experience developing Bitcoin-based applications
• Strong commercial Java experience
• Experience with Spring Boot
• Strong SQL knowledge
• Deep understanding of the Bitcoin protocol, including:
  • PSBT (BIP-174)
  • UTXO management
  • Coin selection algorithms
  • SegWit transactions
  • Bitcoin descriptors
• Experience implementing multi-signature wallets:
  • BIP-48
  • BIP-67
  • P2WSH
• Experience with:
  • Fee estimation
  • RBF
  • CPFP
  • Mempool monitoring
• Experience constructing Bitcoin transactions, including:
  • Witness data
  • BIP-143
  • DER signatures
  • SIGHASH types
• Experience managing:
  • HD wallets
  • Gap limits
  • Address derivation
  • Address discovery
• Strong understanding of Bitcoin transaction lifecycle and network behavior
• Experience operating production Bitcoin custody or wallet infrastructure
• Familiarity with:
  • Domain-Driven Design (DDD)
  • TDD and/or BDD
  • Monorepo development
  • CI/CD workflows
• Strong communication skills in English

Nice to Have

• Experience with additional blockchain protocols
• Institutional custody platform experience
• Experience building highly available financial systems
• Strong software architecture background

What We’re Looking For

• Deep Bitcoin protocol expertise
• Strong ownership mindset
• Excellent debugging and problem-solving skills
• Comfortable working in collaborative engineering environments
• Ability to communicate technical decisions clearly
• Passion for secure, high-quality software

About the Role

We are looking for a Senior Java Tech Lead / Lead Architect to join a long-term enterprise project for one of our global consulting clients.

Initially, you will participate in discovery activities and help define the technical direction of the project. As development ramps up, you will transition into a key technical leadership role, driving architecture decisions, technical execution, and helping scale the engineering team.

This is an excellent opportunity to shape a large-scale enterprise platform from the early stages while remaining hands-on with development.

Project Overview

The project focuses on the maintenance and further development of complex enterprise calculator applications written in Java.

The platform is used by approximately 300 international corporate clients and supports business-critical functionality, including:

• Tax compliance (JPK generation)
• Financial reporting
• Complex financial calculations and statements
• Enterprise business workflows

The team will initially consist of 1–2 dedicated Java engineers and is expected to grow to approximately five specialists as the platform expands.

What You'll Do

• Lead the technical direction of the project
• Participate in discovery sessions and architecture discussions with the client
• Design scalable and maintainable enterprise solutions
• Develop and maintain Java applications
• Review code and establish engineering best practices
• Support technical decision-making across the team
• Collaborate closely with client stakeholders and business representatives
• Help build and scale the engineering team as the project grows
• Ensure high standards of code quality, performance, and maintainability

Requirements

• 8+ years of commercial Java development experience
• Proven experience as a Technical Lead, Lead Developer, Lead Architect, or similar senior technical role
• Strong experience designing and maintaining enterprise Java applications
• Experience leading technical discovery and solution design
• Strong understanding of software architecture and enterprise application design
• Experience working directly with enterprise clients and stakeholders
• Excellent communication skills
• English level B2 or higher
• Located within the EU

Nice to Have

• Experience in financial, tax, or regulatory systems
• Experience working with large enterprise consulting organizations
• Experience scaling engineering teams
• Experience modernizing legacy Java applications
• Cloud and CI/CD experience

What We're Looking For

• Strong technical leadership without losing hands-on engineering skills
• Ability to make architectural decisions and guide technical delivery
• Excellent communication and stakeholder management skills
• Ownership mindset with a focus on long-term product quality
• Comfortable working in enterprise environments with complex business domains

About the Role

We are looking for a Senior AI & Cloud Security Consultant to help design and assess secure, scalable cloud and AI solutions for enterprise environments.

You will play a key role in evaluating security risks, defining security architectures, and enabling the secure adoption of modern cloud services, Microsoft 365, Power Platform, and enterprise AI technologies, including LLMs and agentic AI.

This is a consulting role requiring both strong technical expertise and the ability to communicate security recommendations to business and technical stakeholders.

What You’ll Do

• Lead security risk assessments, threat modeling (e.g., STRIDE), and security reviews for cloud workloads, Microsoft 365, Power Platform, and AI solutions
• Design security architectures, controls, and governance for enterprise AI services, including agentic and autonomous AI
• Assess Microsoft 365 and Power Platform environments, including Copilot, Power Apps, Power Automate, connectors, and data governance
• Evaluate security risks related to LLMs, RAG implementations, AI agents, and autonomous systems
• Define technical and procedural controls to mitigate AI and cloud security risks
• Translate business requirements into clear security requirements and recommendations
• Collaborate with architects, IT teams, and business stakeholders to ensure secure and compliant cloud and AI adoption
• Produce security documentation, including risk assessments, security requirements, residual risk evaluations, and approval documentation
• Work independently while collaborating effectively within cross-functional teams

Requirements

• 7+ years of professional experience in Cybersecurity
• 4+ years of hands-on experience in Cloud Security
• 1+ year of hands-on experience in AI Security
• Demonstrated experience securing enterprise AI, LLMs, and agentic/autonomous AI solutions (Azure preferred)
• Strong knowledge of Microsoft 365 security and compliance, including:
  • Entra ID
  • Microsoft Defender
  • Microsoft Purview
  • Conditional Access
  • Data Protection
• Experience with Power Platform governance, including:
  • Environment strategy
  • Data Loss Prevention (DLP)
  • Connectors
  • Copilot Studio security
• Experience conducting threat modeling (e.g., STRIDE) and enterprise risk assessments
• Familiarity with security standards and frameworks such as ISO 27001, NIST, and CIS
• Strong understanding of cloud security and compliance best practices
• Excellent English communication skills (B2+)

Nice to Have

• Experience securing Azure AI services
• Experience with enterprise governance for Generative AI
• Knowledge of AI governance and responsible AI principles
• Experience in consulting or enterprise advisory roles
• Relevant cloud or security certifications (Microsoft, Azure, CISSP, CCSP, etc.)

What We’re Looking For

• Strong analytical and problem-solving skills
• Ability to communicate complex security concepts clearly
• Independent, proactive, and detail-oriented
• Comfortable working with both technical and business stakeholders
• Passion for helping organizations securely adopt modern AI technologies

If you’re passionate about AI security, cloud security, and helping enterprises adopt emerging technologies safely and securely, we’d love to hear from you.

About the Role

We are looking for a Senior Full Stack Java Developer to join a long-term project supporting an established UK organization.

You’ll design, enhance, and maintain web applications and ERP-related solutions that support critical business operations. This is a hands-on role covering backend services, frontend development, relational databases, and enterprise integrations.

The ideal candidate has strong commercial Java experience combined with hands-on expertise in Apache OFBiz, including Groovy and FreeMarker.

What You’ll Do

Solution Design & Development

• Design, develop, and maintain scalable full-stack business applications
• Translate business requirements into technical solutions
• Contribute to architecture, coding standards, security, and performance improvements
• Participate in code reviews and technical discussions

Backend Development

• Develop backend services and business logic using Java
• Build and maintain Apache OFBiz entities, services, events, screens, and components
• Develop business rules, automation, and integrations using Groovy
• Troubleshoot production issues and implement long-term solutions

Frontend & Data

• Develop user interfaces using FreeMarker, HTML, CSS, and JavaScript
• Build responsive and accessible web interfaces
• Design and optimize SQL queries and support database improvements
• Develop ERP workflows, integrations, and scheduled jobs

Quality & Delivery

• Write unit and integration tests
• Support production releases and post-release activities
• Maintain technical documentation
• Ensure maintainable, secure, and high-quality code

Must-Have Requirements

• Strong commercial experience as a Full Stack Java Developer
• Excellent Java development skills
• Hands-on experience with Apache OFBiz
• Practical experience with Groovy
• Practical experience with FreeMarker
• Experience delivering or integrating ERP systems
• Strong knowledge of HTML, CSS, and JavaScript
• Strong SQL skills, including query optimization and relational database design
• Experience with web application architecture and REST APIs
• Strong debugging and root-cause analysis skills
• Ability to translate business requirements into technical solutions
• Excellent communication skills in English (B2+)

Nice to Have

• Experience with CI/CD pipelines
• Experience with Git
• Docker, Linux, or cloud deployment experience
• Performance tuning of Apache OFBiz or relational databases
• Relevant certifications or degree

What We’re Looking For

• Strong ownership mindset
• Excellent analytical and problem-solving skills
• Ability to work independently and collaboratively
• Passion for clean, maintainable code
• Comfortable working across backend, frontend, database, and integration layers

Why Join

• Work on large-scale enterprise ERP solutions
• Long-term project with an established UK client
• Opportunity to work across the full application stack
• Collaborative international team and modern development practices