Haystack is seeking an experienced Senior Software Developer to join our engineering team in Washington State. In this role, you will lead the design, development, and maintenance of high-quality software applications that meet the evolving needs of our clients and internal stakeholders. You will work closely with product managers, designers, and other engineers to deliver robust and scalable solutions while ensuring code quality and performance standards are consistently met. As a Senior Software Developer, your key responsibilities will include architecting software systems, writing clean and efficient code, and conducting thorough code reviews to maintain high standards across the team. You will also troubleshoot complex technical issues, optimize application performance, and implement best practices in software development. Additionally, you will mentor junior developers, contribute to technical documentation, and participate in the continuous improvement of our development processes and tools. To succeed in this position, candidates must possess a bachelor's degree in computer science or a related field, along with at least five years of professional software development experience. Proficiency in modern programming languages such as Java, Python, or JavaScript is essential, as is strong experience with software development frameworks and cloud platforms. Excellent problem-solving skills, attention to detail, and the ability to work collaboratively in a fast-paced environment are required. Haystack values innovation, teamwork, and continuous learning. We offer competitive compensation, comprehensive health benefits, flexible work arrangements, and opportunities for professional growth. Our team members enjoy access to ongoing training programs, career advancement paths, and a supportive work culture that encourages creativity and collaboration. Employees also benefit from wellness programs and work-life balance initiatives designed to support both personal and professional success. With a strong commitment to employee development, Haystack provides clear pathways for career progression and leadership opportunities within the organization. Senior developers have the chance to influence product direction, lead major projects, and expand their technical expertise through exposure to cutting-edge technologies and industry best practices.