Senior Software Engineer / Software Architect

Primendro AB; Ale kommun; On-site; SEK 900,000 - 1,300,000; Full time

Job summary

Primendro AB in Sweden seeks a Senior Software Engineer / Software Architect with deep expertise in end-to-end software architecture and full-stack development across fintech, SaaS, proptech, AI and blockchain. You have led greenfield platforms as CTO-level technical leader while remaining hands-on.

You will own design across TypeScript frontend, Fastify backend, PostgreSQL, and cloud infrastructure, while integrating Anthropic Claude API and AWS Bedrock to enable AI-driven document processing

Qualifications

• Master's degree or equivalent in CS/AI or related field.
• 10+ years in professional software development and leadership.
• Experience as CTO or technical leader on multiple greenfield platforms.
• Expert in Node.js, FastifyJS, Python, FastAPI, PostgreSQL, MongoDB, Redis, REST, GraphQL.
• Hands-on with Docker, Kubernetes, AWS Bedrock and SageMaker.
• Experience designing isolated multi-tenant SaaS architectures per tenant.
• Experience integrating Anthropic Claude API for AI processing.
• Experience building multi-currency digital commerce and blockchain tooling.
• Proven track record guiding globally distributed engineering teams and implementing interview frameworks.
• Fluent in English, both speaking and writing.

Responsibilities

• Serve as primary software architect for greenfield platform development across multiple verticals.
• Design end-to-end system architecture including TypeScript frontend, Fastify backend, PostgreSQL, and cloud infra.
• Implement multi-tenant architectures with isolated tenant infra and data stores.
• Design asynchronous processing and business workflows with React, Fastify and PostgreSQL.
• Integrate AI-powered document extraction using Claude API and AWS Bedrock.
• Build event-driven workflows for reconciliation, notifications, auditing, and async ops.
• Design digital asset pipelines including watermarking, preparation, and secure delivery.
• Integrate payments, KYC processes, and financial reconciliation workflows.
• Provide architecture, security, scalability and product development guidance.
• Lead technical design decisions on reliability, security, and delivery constraints.

Skills

Node.js

FastifyJS

Python

FastAPI

PostgreSQL

MongoDB

Redis

REST

GraphQL

Docker

Kubernetes

AWS Bedrock

SageMaker

Anthropic Claude API

AI/ML

CTO-level leadership

English fluency

Blockchain (Ethers, Viem, Wagmi, Hardh

Education

Master's degree in Computer Science / AI

Postgraduate Diploma in AI/ML (preferred)

Tools

Anthropic Claude API

AWS Bedrock

Ethers

Viem

Wagmi

Hardhat

Truffle

Job description

Senior Software Engineer / Software Architect

Kommun: Ale

This is a highly specialized position requiring deep expertise in end-to-end software architecture and full-stack development across fintech, SaaS, proptech, AI, and blockchain domains. The ideal candidate has served as a primary software architect across multiple greenfield platforms and has held CTO-level technical leadership responsibilities while remaining hands-on.

Key responsibilities:

• Serve as primary software architect for greenfield platform development across multiple industry verticals
• Design and own end-to-end system architecture including TypeScript frontend applications, Fastify backend services, PostgreSQL database modeling, and cloud infrastructure
• Implement multi-tenant architectures with physically isolated tenant infrastructure including dedicated backend services, databases, and document storage
• Design asynchronous processing systems and business-critical workflows using React, Fastify, and PostgreSQL
• Integrate AI-powered document extraction and processing using Anthropic Claude API and AWS Bedrock
• Build event-driven workflows for reconciliation, notifications, auditing, and asynchronous operations
• Design and implement digital asset pipelines including watermarking, file preparation, and secure content delivery
• Integrate payment systems, KYC processes, and financial reconciliation workflows
• Provide technical consulting on architecture, security, scalability, and product development
• Lead technical design decisions involving reliability, security, scalability, maintainability, and delivery constraints

Mandatory qualifications:

• Masters degree or equivalent in Computer Science, AI/ML, or a closely related field (Postgraduate Diploma in AI/ML preferred)
• Minimum 10 years of professional software development experience
• Demonstrated experience as CTO or equivalent technical leadership role
• Proven track record as primary architect for multiple greenfield software platforms
• Expert-level proficiency in: Node.js, FastifyJS, Python, FastAPI, PostgreSQL, MongoDB, Redis, REST, GraphQL
• Expert-level proficiency in: Docker, Kubernetes, AWS (including Bedrock and SageMaker)
• Experience designing physically isolated multi-tenant SaaS architectures with dedicated backend services, databases, and document storage per tenant
• Experience integrating Anthropic Claude API for AI-assisted document extraction and processing
• Experience building multi-currency digital commerce platforms with automated payment verification and asset fulfillment
• Experience with Ethers, Viem, Wagmi, Hardhat, and Truffle for blockchain development
• Experience leading and managing globally distributed engineering teams across multiple countries
• Experience restructuring engineering organizations around codebase and domain ownership
• Experience establishing standardized technical interview frameworks and assessment processes
• Fluent in English, both spoken and written

Krav

• Systemutvecklare/Programmerare - 5 års erfarenhet eller mer

Utbildning

• Eftergymnasial utbildning två år eller längre inom Data

Krav

• Engelska