Software Engineer - Full Stack

What is Custral Custral exists because a fundamental problem in how modern companies operate has gone largely unsolved. As companies grow, their customer lifecycle fragments across sales, implementation, support, product, and internal teams. Information is lost, handoffs break down, and customers feel the impact. Most software optimizes for individual functions rather than the system as a whole, which makes this fragmentation worse over time. Custral is a zero-to-one platform built to solve this holistically. We are rethinking how data, workflows, and ownership work across the full customer lifecycle so that teams can operate as one system rather than a collection of disconnected tools. This is not a narrow vertical solution or an incremental improvement. It is a foundational re-architecture for a massive market. The team behind Custral is built and funded by people who have lived this problem firsthand. We know it deeply, we are building from first principles, and we are focused on creating something big and enduring. The Role We are looking for an engineer to help build the Custral product end-to-end. This is a full-stack role with real ownership. You will work across the frontend and backend, design and build core product functionality, and take ideas from concept through production. There is no handoff model. You are expected to think deeply about the problem, do your own research, and make informed decisions about how things should be built. You will have a high degree of autonomy and trust. That comes with responsibility. You will shape product direction, influence architecture, and iterate directly with real users. We care less about rigid role boundaries and more about impact, judgment, and execution. This role is best suited for someone who enjoys freedom, ambiguity, and building from first principles, and who wants to have a direct hand in shaping both the product and the system behind it. How to Succeed You will succeed in this role if you can operate independently, make sound technical decisions, and collaborate effectively when needed. In practice, that means: You are deeply fluent in TypeScript and comfortable using it across the stack You have built and maintained full-stack products end-to-end You have strong experience with React on the frontend and Node.js (Express) on the backend You have worked extensively with PostgreSQL and understand data modeling, performance, and migrations You have experience using Redis for caching, queues, or real-time systems You have worked with Elasticsearch or similar systems for search or high-volume querying You have experience building and operating high-volume production systems You can work autonomously, do your own research, and move work forward without constant direction You collaborate well with others, communicate clearly, and know when to pull people in Strong candidates ship meaningful functionality without cutting corners, explain tradeoffs clearly, take ownership of problems end to end, and consistently leave the system better than they found it. How we hire At Custral, we hire only top-tier candidates . We do not optimize for speed or volume, and we do not lower the bar. Every hire is expected to materially raise the quality of the team and the work. Based on that, we evaluate all candidates through a single lens: can they Deliver Impact Through Excellence Impact means: Building with the customer in mind and optimizing for meaningful outcomes Communicating with candor and transparency , including healthy debate Prioritizing clarity and focus over unnecessary complexity Being willing to change course or abandon ideas that are not working Thinking big and acting boldly when the opportunity calls for it Paying attention to detail and doing structured, reliable work Excellence means: Being smart, driven, and startup-minded with a strong sense of ownership Operating with humility and professionalism . No ego is non-negotiable Taking initiative and proactively solving problems without waiting for direction Thinking beyond your immediate work and understanding its broader impact Continuously learning and improving your craft Valuing diversity of thinking to avoid groupthink and build better solutions We assess these qualities throughout the interview process, not through resume checklists or trick questions. Our process is deliberate and transparent: 15-minute phone screen to see if there is fit on both sides 30-minute screen focused on experience and thinking 60-minute technical interview relevant to the role Four-hour in-person onsite in our New York City office Our Culture Because we hire at the top of the talent curve, we operate with a high degree of trust. At Custral, freedom and responsibility go hand in hand . We give people the autonomy to do their best work, make decisions, and move quickly, with the expectation that they take full ownership of outcomes. We minimize process for the sake of process and maximize judgment, speed, and accountability. Custral is a zero-to-one company working on a foundational problem. The work is ambiguous, the bar is high, and the decisions we make early on will compound over the years . That only works with a team that shares a deep sense of ownership and a commitment to quality. Great work comes from close collaboration and fast feedback. That is why this is a New York–based, in-person role, five days a week. Being in the room matters at this stage, both for execution speed and for building team trust. This environment is best suited for people who enjoy early-stage work, care deeply about craftsmanship and simplicity, and are comfortable taking responsibility in the absence of perfect information. It is probably not a good fit if you prefer narrowly scoped tasks, rigid requirements, or a low-intensity environment . That tradeoff is intentional. Our Offer Custral is an early-stage startup. The pace is high, the work is demanding, and there will be long days . The tradeoff is real ownership, accelerated learning, and the opportunity to help build something foundational from the ground up. We offer top-of-market compensation and meaningful upside with the expectation that you are exceptional and willing to put in the work. This is a high-bar environment by design. For this role, total compensation includes: Base salary: $120,000 – $175,000 Equity: 0.5% – 1% (meaningful ownership, early-stage) 401(k): Company match up to 3.5% Final compensation is determined by experience, impact, and role level, not by tenure or credentials alone. Benefits and support: Fully covered medical, dental, and vision Monthly health and wellness stipend Free meals for lunch and dinner when working from the office Unlimited PTO, with the expectation that you actually take time off Commuter stipend Disclaimers This role is based in New York, NY, and requires in-person work five days per week. Relocation assistance may be available on a case-by-case basis. Custral is an equal opportunity employer . We are committed to creating an inclusive environment for all employees and applicants. We do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, disability, veteran status, genetic information, marital status, or any other characteristic protected by applicable law. In compliance with New York law, the compensation range listed for this role is a good-faith estimate of the base salary range Custral expects to pay for this position at the time of posting. Actual compensation may vary based on experience, skills, performance, and role scope. Custral is committed to providing reasonable accommodations to qualified individuals with disabilities and for sincerely held religious beliefs, in accordance with applicable law . If you require an accommodation during the hiring process, please let us know.