Senior Software Engineer (Newstore) - Contract at Lazer

Lazer [Upgrade to PRO to see link] is a world-class digital product studio composed of 180+ senior engineers and designers with backgrounds from companies like Apple, Google, Coinbase, and more. With our product experience, we have designed, engineered, and grown products from $0 to $200M in revenue. Clients seek out our help because we have the talent to deeply understand their needs and provide industry, technical, or product insights that are uniquely valuable to their efforts. Our clients range from early-stage startups and venture studios to recognizable retail brands and exciting enterprises. Some of our notable clients include Google, Shopify, Coinbase, Alchemy, Hinge, OVO, Polymarket, and more. We are a remote-first organization headquartered in Toronto, Ontario, with employees worldwide. We believe in providing the best experience possible for all Lazerites by fostering a strong community through regular events, company vacations, competitive compensation, unlimited PTO, and more! Join Lazer and help us solve problems and build the next generation of products! THE ROLE: We are looking for a senior NewStore OMS Developer to join our team and take ownership of a critical middleware integration connecting NewStore OMS/POS with Shopify. You will be responsible for auditing an existing middleware layer, stabilizing it, and evolving it from reactive bug fixing into a scalable, feature-driven integration. The ideal candidate brings direct, hands-on NewStore OMS integration experience and can ramp up quickly on an inherited codebase with minimal guidance. Please Note: This is a Contract position (hourly rate). We welcome applications from across the globe, but our preferred candidates should be able to work in Eastern Standard Timezone (EST). RESPONSIBILITIES: - Lead audit/discovery of an existing Newstore OMS ↔ Shopify integration and middleware (architecture, data flows, failure modes). - Take full ownership of middleware maintenance, shifting focus from reactive bug fixing to proactive feature delivery - Develop, test, and deploy enhancements to the OMS–Shopify integration layer - Troubleshoot and resolve integration issues between NewStore OMS and Shopify - Collaborate with cross-functional teams (engineers, delivery managers, stakeholders) to clarify requirements, prioritize fixes, and ship improvements. - Provide technical input on platform integration decisions and evolving requirements - Participate in code reviews and contribute to continuous improvement of integration practices - Document integration logic, data flows, and system changes throughout the engagement REQUIREMENTS: - Hands-on experience integrating Newstore, ideally with a focus on Newstore OMS - Senior-level experience owning production integrations and debugging complex systems under real-world constraints. - Proven ability to perform technical audits and ramp quickly in partially documented or “black box” environments. - Strong API/integration fundamentals (REST, webhooks/event-driven patterns, async processing, data consistency, reconciliation workflows). - Strong software engineering fundamentals (system design, data modeling, testing strategies). - Strong written and verbal communication skills for async, cross-functional collaboration - Ability to work with meaningful overlap in Eastern Time (ET/EST) hours. NICE TO HAVE: The following would be bonus experience to have, though highlight any additional experience or skills you may have. We like working with people with varied backgrounds and experiences. - Experience with Shopify (Plus) APIs and the broader Shopify ecosystem - Familiarity with Shopify POS and OMS/POS migration patterns - Retail / omnichannel domain familiarity (order lifecycle, inventory, fulfillment, returns). - Experience improving observability and ops maturity (logging/metrics/tracing, alerting, incident workflows). - Prior experience in an agency/consulting environment, especially taking over or remediating existing integrations. AI in our hiring process We use AI to help us review and shortlist applications based on job-related criteria. A human hiring manager always makes the call on who moves forward. As a company that builds with AI every day, we're all for candidates using it too — just be upfront about how it helped. Why Work With Us - 🚀 Accelerate Your Growth: Work across multiple industries and cutting-edge projects with a team that ships fast. - 💥 Maximum Impact: Shape the future of the tech industry by helping ambitious projects reach their potential. - 🏅 True Ownership: Everyone ships code and has real autonomy with minimal meetings. - 💡 Continuous Learning: Be part of a team of senior engineers and designers who love learning and knowledge sharing. WHY THIS MIGHT NOT BE FOR YOU - 🤖 You Resist Modern Tools: We leverage AI and cutting-edge technology to build rapidly and focus our energy on solving the most complex, high-impact challenges for our clients. - 🏗️ You Crave High Structure: We thrive in an autonomous, fast-moving environment, which means you need to be comfortable with some ambiguity. - 😴 You Prefer Conventional Careers: Our consulting approach involves varied projects and direct client interaction — it's not for everyone. - 1️⃣ You Like Staying in One Lane: Our projects require adapting to different tech stacks and modern tooling quickly. BENEFITS & PERKS - 🌐 Work From Anywhere: Choose your workspace — all you need is strong wifi and a passion for building! - 🧘‍♂️ Work / Life Balance: We believe in our team’s ability to have it all; a great career, and time to unplug and live…you know...life. - 🩺 Employee Care: We provide full benefits (healthcare, dental, vision) for our employees (401k for our US employees) - 🏖️ Unlimited PTO: Everyone needs a break. Take at least 15 days off a year, and more if you need—just be cool about it and keep the team in mind. - 🎉 Regular Team Retreat: Join us for a week of team bonding at amazing destinations. Recent trips include the Dominican Republic, Cancun, and Hawaii — plus ones welcome.