Backend Development

Senior Software Engineer – Java, AWS & Payments Systems | San Jose (Hybrid)

Senior Software Engineer – Payments (Java / AWS)

📍 Location: San Jose, California
🏢 Work Model: Hybrid (3 days onsite – Mon, Tue, Thu | 2 days remote)
💼 Employment Type: Contract
Duration: 6+ months (likely extension)
🎓 Education: Bachelor’s Degree required (Computer Science or related)
📈 Experience Level: Mid-Senior
🕒 Experience Required: 5+ years
🌎 Visa Sponsorship: Not available

🚀 Role Overview

We’re hiring a Senior Backend Engineer to build and scale high-performance payment systems in a fast-growing fintech environment.

This role is focused on Java-based microservices and AWS cloud architecture, supporting secure, scalable, and low-latency transaction systems.

You’ll work on mission-critical payment infrastructure, collaborating with product and engineering teams to deliver next-generation capabilities.

✅ MUST HAVE (Core Requirements)

Backend Engineering

  • 5+ years experience designing, developing, and operating:

    • Distributed systems

    • Microservices architectures

  • Strong hands-on expertise in:

    • Java (Spring Boot preferred)

Cloud (AWS)

  • Proven experience building and supporting applications on:

    • AWS (EC2, RDS, Lambda, API Gateway)

  • Ability to design scalable, reliable, cloud-native systems

⭐ NICE TO HAVE

  • Experience in payments or fintech environments

  • Knowledge of:

    • PCI compliance, encryption, and secure payment systems

  • Familiarity with:

    • AI coding tools (e.g., GitHub Copilot or similar)

  • Master’s degree in Computer Science or related field

🛠️ Key Responsibilities

Backend & System Design

  • Design and build scalable microservices and APIs

  • Develop low-latency, high-availability systems

  • Ensure systems are secure, resilient, and production-ready

Cloud & Infrastructure

  • Build and maintain services on AWS

  • Support CI/CD pipelines and automated deployments

  • Optimize for performance, cost, and scalability

Reliability & Operations

  • Implement monitoring, logging, and alerting

  • Troubleshoot and resolve production issues quickly

  • Ensure high system uptime and performance

Collaboration & Ownership

  • Work closely with:

    • Product managers

    • Engineers

    • Stakeholders

  • Participate in:

    • Code reviews

    • Design discussions

    • Technical decision-making

  • Take ownership of critical backend systems

⚡ Interview Process

  • 2 stages only (fast turnaround):

    1. Technical interview (includes light live coding)

    2. Hiring manager conversation

📌 Submission Requirements (MANDATORY)

Please include a short 3–5 bullet summary covering:

  • Java + AWS experience

  • Key project highlights (especially backend / distributed systems)

  • Availability & interest level

  • Confirmation of hybrid (San Jose) alignment

🎯 Ideal Candidate

  • Strong backend engineer first (not full-stack leaning frontend)

  • Hands-on builder of distributed, cloud-native systems

  • Experience working in high-scale or transaction-heavy environments

  • Comfortable owning systems end-to-end in production

 

.NET Backend Developer | Hybrid | Real Estate Technology | Utrecht, Netherlands | €51,840 - €84,240

.NET Backend Developer (Hybrid – Utrecht)

Location: Utrecht (Hybrid)
Employment Type: Full-Time
Industry: Real Estate / PropTech
Experience Level: Mid-Senior
Salary: €51,840 – €84,240 per year (€4,000 – €6,500 per month)
Vacation: 37 days
Visa Sponsorship: Not available
Relocation: Not offered

Shape the Future of Real Estate Technology

Are you a .NET backend developer with a passion for building scalable, high-performance applications? Join a team dedicated to data-driven innovation in real estate. You will play a key role in integrating hybrid valuation into end-to-end solutions, ensuring seamless connections between frontend and backend systems.

Your Role

As a .NET Backend Developer, you’ll build, maintain, and optimize backend applications that process and enrich real estate data. Working in a Scrum team, you’ll collaborate with developers, designers, and stakeholders to create innovative tools that make real estate data more accessible and valuable.

Key Responsibilities

  • Develop and maintain .NET applications to support real estate data solutions

  • Work with databases to optimize integration, scalability, and security

  • Build and consume APIs to facilitate smooth data exchange

  • Ensure high performance and security through best practices

  • Collaborate across cross-functional teams

  • Stay up to date with the latest .NET and cloud innovations

What You Bring

  • Bachelor’s degree in Computer Science, IT, or related field

  • 5+ years experience in object-oriented programming

  • Proven experience with cloud-native development (Docker, Kubernetes, AWS/GCP/Azure)

  • Proficiency in .NET technologies (ASP.NET, .NET Core, C#)

  • Experience in Scrum/Agile environments

  • Strong problem-solving ability and a proactive, adaptable mindset

  • Relevant certifications in .NET or cloud platforms are a plus

What You’ll Solve

You will be instrumental in building a hybrid valuation engine by ensuring seamless communication between frontend and backend systems in our real estate data platform.

Why You’ll Love Working Here

Join a dynamic, 50+ person team working at the intersection of tech and real estate. Based in Utrecht, you’ll work in a modern office with free parking, or remotely via a flexible hybrid setup. The company fosters a culture of innovation, professional growth, and work-life balance.

Perks & Benefits

  • 💰 Attractive salary: Up to €85K annually

  • 💸 13th-month bonus

  • 🌴 37 vacation days

  • 🧓 Premium pension plan (only 1% employee contribution)

  • 💻 Tech essentials: Choose your preferred laptop and phone or receive €30/month net allowance

  • 🚆 Commuting support: €0.23/km or 100% reimbursed NS Business Card

  • 🏠 Hybrid work setup with €2.40 daily allowance for home working days

  • 📚 €1,500 annual training budget

  • 🏥 Collective health insurance discounts (up to 10%) via Zilveren Kruis

Work Culture

  • Friendly and informal atmosphere

  • Hybrid by default – work part of the week from home

  • Collaborative and diverse teams

  • Self-managing teams with freedom to take initiative